Dispensing syringe structure
By introducing a combined design of isolation sleeve and protective sleeve into the dispensing syringe, the needle contamination and safety issues are solved, and the needle is automatically isolated and protected during the entire use process is achieved, improving safety and convenience.
Patent Information
- Application Number
- CN202323402540.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-14
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2033-12-14
AI Technical Summary
Existing dispensing syringes are susceptible to contamination when transferring the needle and lack continuous isolation protection, which may injure people during the insertion and removal process.
A dispensing syringe structure is designed, using a combination of an isolation sleeve and a protective sleeve. The isolation sleeve is protected when the needle is inserted into the medicine bottle, automatically reset when it is pulled out, and moves simultaneously through spring drive to ensure that the needle is in the entire use process. Always protected; at the same time, the scale marks on the push rod assist in operation to ensure accurate quantities.
Effectively prevents the needle from contacting foreign objects, improves safety, and maintains the convenience of the use process consistent with traditional syringes, ensuring that the needle is automatically isolated and protected every time it is inserted and unplugged.
Smart Images
Figure CN222218236U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of syringes, in particular to a medicine dispensing syringe structure. Background Art
[0002] In the prior art, syringes can be divided into human syringes and medication syringes. In terms of function, medication syringes are only used for dispensing liquids and cannot be used for body injections, while human syringes are generally used for body injections and can also be used for dispensing medicines. In terms of structure: the biggest difference between medication syringes and ordinary syringes is that the needles are different. Medication syringes are equipped with drug-dissolving needles, with a nominal diameter of generally 1.2mm-3.4mm, with 1.2mm and 1.6mm being the most common, and with side-hole needles and bevel needles; while ordinary syringes are equipped with injection needles, with a nominal diameter of generally 0.40mm-1.2mm.
[0003] In essence, there is no difference between a dispensing syringe and an ordinary syringe. Both are simple syringes with a needle connected to the lower end. When dispensing medicine, nurses often need to draw the liquid medicine from dozens of medicine bottles. This requires repeated insertion and removal of the needle. When transferring the needle to draw the liquid medicine from the next bottle, the entire needle is not isolated at all, so the needle is easily contaminated. At the same time, the exposed needle is easy to hurt people during the process of dispensing and transferring medicine. The dispensing syringe in the prior art has only one protective shell, and the needle cannot be continuously isolated and protected when the medicine is removed. Therefore, an improved structure of the dispensing syringe is needed to address this problem. Utility Model Content
[0004] The purpose of the utility model is to provide a medicine dispensing syringe structure to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dispensing syringe structure, comprising a needle tube, a piston movably engaged inside the needle tube, a push rod fixedly arranged on the surface of the piston, a connecting tube fixedly arranged at the lower end of the needle tube, a needle fixedly arranged at the lower end of the connecting tube, a needle bolt fixedly arranged on the upper end of the needle, and the needle movably engaged with the needle bolt on the outer surface of the connecting tube; an isolation mechanism for isolating the needle is arranged between the needle tube and the needle, the isolation mechanism comprises a connecting sleeve, a connecting ring, and an isolation sleeve, a connecting sleeve fixedly arranged on the outer surface of the needle tube, a connecting ring movably engaged inside the connecting sleeve, and an isolation sleeve fixedly arranged on the outer surface of the connecting ring.
[0006] Preferably, the isolation sleeve is sleeved on the outer surface of the needle, and the isolation sleeve can play the role of isolating the needle. When the needle needs to be inserted into the medicine, the device is the same as the traditional syringe. The needle part is directly aligned with the rubber part of the medicine bottle and inserted. At this time, the rubber part of the medicine bottle will limit the isolation sleeve. At this time, only the needle can be inserted into the medicine bottle, and then the piston is pulled to absorb the medicine. When the needle is pulled out after the medicine is taken, the isolation sleeve will be reset under the action of the spring, and gradually re-sleeved on the outer surface of the needle as the needle is pulled out. In this way, the entire use process of the device is consistent with the traditional syringe; and the up and down movement of the isolation sleeve is synchronized and automatically performed as the needle is inserted into and pulled out of the medicine bottle, so that the device is more convenient to use.
[0007] Preferably, a protective sleeve is provided between the isolation sleeve and the needle, and the protective sleeve is sleeved on the outer surface of the needle plug through an interference fit. This protective sleeve is a plastic protective sleeve that is sleeved on the surface of the needle of a traditional disposable syringe. The protective sleeve is removed when it is needed. When inside the package, the needle is always protected and isolated by this hard protective sleeve.
[0008] Preferably, a spring is provided inside the connecting sleeve, and the connecting ring and the isolation sleeve can be automatically pushed downward by the spring.
[0009] Preferably, fixing blocks are fixedly provided on both sides of the upper end of the needle tube, and the device can be conveniently operated by hooking the fixing blocks with fingers.
[0010] Preferably, the outer surface of the push rod is provided with scale lines, because the device is provided with a connecting sleeve and a spring on the outer side of the needle tube, even if the connecting sleeve is transparent, the nurse may not be able to see the piston clearly under the cover of the spring, so the scale lines on the surface of the push rod can facilitate the user to accurately dispense medicine; although the scale lines are rarely used when dispensing medicine, generally one medicine bottle is used as a unit; but the use of the scale lines still ensures the basic quantitative function.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. According to the utility model, when the needle is pulled out after the medicine is taken, the isolation sleeve will be reset under the action of the spring, and will gradually be re-covered on the outer surface of the needle as the needle is pulled out. Then, when the nurse inserts the needle into the next bottle of medicine, the needle will always be protected by the sleeve. In this way, each time the needle is pulled out from the medicine bottle and is ready to be inserted into another medicine bottle, the needle will be automatically covered and isolated, thereby preventing contact with foreign objects and improving safety.
[0013] 2. The entire use process of the utility model is consistent with that of a traditional syringe; and the up and down movement of the isolation sleeve is synchronously and automatically performed as the needle is inserted into and pulled out of the medicine bottle, so the device is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the overall structure of a medicine dispensing syringe according to the utility model;
[0015] Figure 2 This is a cross-sectional view of the structure of a medicine dispensing syringe of the utility model;
[0016] Figure 3 This is an installation view of a protective sleeve in a dispensing syringe structure of the utility model;
[0017] Figure 4 This is an upward view of an isolation sleeve in a medicine dispensing syringe structure of the utility model.
[0018] In the figure: 1. needle tube; 2. piston; 3. connecting tube; 4. needle; 5. needle plug; 6. connecting sleeve; 7. connecting ring; 8. isolation sleeve; 9. protective cover; 10. spring; 11. fixing block; 12. scale line; 13. push rod. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1-4 The utility model provides a technical solution: a dispensing syringe structure, comprising a needle tube 1, a piston 2 is movably engaged inside the needle tube 1, a push rod 13 is fixedly arranged on the surface of the piston 2, a connecting tube 3 is fixedly arranged at the lower end of the needle tube 1, a needle 4 is fixedly arranged at the lower end of the connecting tube 3, a pintle 5 is fixedly arranged on the upper end of the needle 4, and the needle 4 is movably engaged with the outer surface of the connecting tube 3 through the pintle 5; an isolation mechanism for isolating the needle 4 is arranged between the needle tube 1 and the needle 4, the isolation mechanism comprises a connecting sleeve 6, a connecting ring 7, and an isolation sleeve 8, a connecting sleeve 6 is fixedly arranged on the outer surface of the needle tube 1, a connecting ring 7 is movably engaged inside the connecting sleeve 6, and an isolation sleeve 8 is fixedly arranged on the outer surface of the connecting ring 7.
[0021] The isolation sleeve 8 is sleeved on the outer surface of the needle 4, and the isolation sleeve 8 can play the role of isolating the needle 4. When the needle 4 needs to be inserted into the medicine, the device is the same as the traditional syringe, and the needle 4 part is directly aligned with the rubber part of the medicine bottle and inserted. At this time, the rubber part of the medicine bottle will limit the isolation sleeve 8, and only the needle 4 can be inserted into the medicine bottle. Then, the piston 2 can be pulled to absorb the medicine. When the needle 4 is pulled out after the medicine is taken, the isolation sleeve 8 will be reset under the action of the spring 10, and gradually re-sleeved on the outer surface of the needle 4 as the needle 4 is pulled out, so that the entire use process of the device is consistent with the traditional syringe; and the up and down movement of the isolation sleeve 8 is synchronized and automatically performed as the needle 4 is inserted into and pulled out of the medicine bottle, so the device is more convenient to use;
[0022] A protective sleeve 9 is further provided between the isolation sleeve 8 and the needle 4. The protective sleeve 9 is sleeved on the outer surface of the needle plug 5 through an interference fit. The protective sleeve 9 is a plastic protective sleeve 9 that is sleeved on the surface of the needle 4 of a conventional disposable syringe. The protective sleeve 9 is removed when it is needed. When the needle 4 is inside the package, it is always protected and isolated by the hard protective sleeve 9.
[0023] The connecting sleeve 6 is provided with a spring 10 inside, and the connecting ring 7 and the isolating sleeve 8 can be automatically pushed downward by the spring 10;
[0024] The upper ends of the needle tube 1 are fixed with fixing blocks 11 on both sides, and the device can be conveniently operated by hooking the fixing blocks 11 with fingers;
[0025] The outer surface of the push rod 13 is provided with scale lines 12. Since the device is provided with a connecting sleeve 6 and a spring 10 on the outer side of the needle tube 1, even if the connecting sleeve 6 is transparent, the nurse may not be able to see the piston 2 clearly due to the cover of the spring 10. Thus, the scale lines 12 on the surface of the push rod 13 can facilitate the user to accurately dispense medicine. Although the scale lines 12 are rarely used when dispensing medicine, the basic quantitative function is still guaranteed by using the scale lines 12.
[0026] Working principle: When using the device, the device is the same as a traditional syringe. Just align the needle 4 part with the rubber part of the medicine bottle and insert it. At this time, the rubber part of the medicine bottle will hinder the isolation sleeve 8. At this time, only the needle 4 can be inserted into the inside of the medicine bottle. Then, pull the piston 2 to absorb the medicine. When the needle 4 is pulled out after the medicine is taken, the isolation sleeve 8 will be reset under the action of the spring 10, and gradually re-sheathed on the outer surface of the needle 4 as the needle 4 is pulled out. Then, when the nurse inserts the needle 4 into the next bottle of medicine, the needle 4 will always be protected by the sheath. In this way, each time the needle 4 is pulled out of the medicine bottle and is ready to be inserted into another bottle of medicine, the needle 4 will be automatically covered and isolated, thereby preventing contact with foreign objects and improving safety. The entire use process of the device is consistent with that of a traditional syringe; and the up and down movement of the isolation sleeve 8 is synchronized and automatically performed as the needle 4 is inserted into and pulled out of the medicine bottle, so the device is more convenient to use.
[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A dispensing syringe structure, comprising a needle tube (1), characterized in that: A piston (2) is movably engaged inside the needle tube (1), a push rod (13) is fixedly arranged on the surface of the piston (2), a connecting tube (3) is fixedly arranged at the lower end of the needle tube (1), a needle (4) is fixedly arranged at the lower end of the connecting tube (3), a pintle (5) is fixedly arranged at the upper end of the needle (4), and the needle (4) is movably engaged with the pintle (5) and arranged on the outer surface of the connecting tube (3); an isolation mechanism for isolating the needle (4) is arranged between the needle tube (1) and the needle (4), the isolation mechanism comprising a connecting sleeve (6), a connecting ring (7), and an isolation sleeve (8); a connecting sleeve (6) is fixedly arranged on the outer surface of the needle tube (1), a connecting ring (7) is movably engaged inside the connecting sleeve (6), and an isolation sleeve (8) is fixedly arranged on the outer surface of the connecting ring (7).
2. A dispensing syringe structure according to claim 1, characterized in that: The isolation sleeve (8) is sleeved on the outer surface of the needle (4).
3. A dispensing syringe structure according to claim 1, characterized in that: A protective sleeve (9) is also provided between the isolation sleeve (8) and the needle (4), and the protective sleeve (9) is provided on the outer surface of the needle plug (5) through an interference fit.
4. A dispensing syringe structure according to claim 1, characterized in that: A spring (10) is arranged inside the connecting sleeve (6).
5. A dispensing syringe structure according to claim 1, characterized in that: Fixed blocks (11) are fixedly arranged on both sides of the upper end of the needle tube (1).
6. A dispensing syringe structure according to claim 1, characterized in that: The outer surface of the push rod (13) is provided with scale lines (12).