Needleless injector

Abstract

The utility model discloses a needleless injector which comprises an injector body, and after the injector body is excited, a medicament is sprayed out from an injection end; the protective cover is arranged at the injection end of the injector body, the circle center of the side, away from the injector body, of the protective cover is open, and the open position is used for containing the injection end of the injector body; the shielding assembly is arranged on the side, away from the injector body, of the protective cover, and the shielding assembly moves to be used for shielding the open position of the protective cover and is further used for releasing the shielding state of the open position; the antibacterial sheet is annular in appearance and detachably arranged on the side, away from the protective cover, of the shielding assembly, and the circle center of the antibacterial sheet is aligned with the injection end of the injector body. According to the utility model, the transmitting end of the needleless injector can be ensured to have better safety when being used and not used, so that the practical use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of syringes, in particular to a needle-free syringe. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] A needle-free syringe is an innovative drug delivery device that allows drugs to be injected into the body through the skin without the use of a traditional needle. Its working principle is generally to use high pressure to propel the drug through the surface of the skin in the form of a high-speed jet, thereby avoiding the pain, infection risk, and other complications caused by the use of needles. When in use, the injection tip of a needle-free syringe will come into contact with the skin, which can easily cause bacteria to grow on the injection tip. At the same time, if the emission tip of a needle-free syringe is exposed to the outside for a long time, it is easy to become unprotected. Therefore, how to design a needle-free syringe that can protect the emission tip and ensure good safety both when in use and when not in use has become a problem that people in this field need to solve. Utility Model Content

[0004] The purpose of the present invention is to address the above-mentioned shortcomings and provide a needle-free syringe, so that the transmitting end of the needle-free syringe has better safety when in use and when not in use.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a needle-free syringe, comprising:

[0006] The syringe body ejects the medicine from the injection end after being actuated;

[0007] a protective cover, which is arranged at the injection end of the syringe body, wherein the interior of the protective cover is hollow and is used to accommodate the injection end of the syringe body, and the end of the protective cover away from the syringe body is open;

[0008] a shielding assembly, which is arranged at an end of the protective cover away from the syringe body and is used to shield the opening at the end of the protective cover and expose the opening at the end of the protective cover;

[0009] The antibacterial sheet is detachably arranged on the side of the shielding component away from the protective cover. A clearance hole is opened on the antibacterial sheet at the injection end of the corresponding syringe body. The antibacterial sheet is used to prevent the skin from contacting the injection end of the syringe body when the syringe body is working.

[0010] Furthermore, the shielding assembly includes a first ring body arranged on the side of the protective cover away from the syringe body, a second ring body rotatably arranged on the bottom of the protective cover, the second ring body is located between the protective cover and the first ring body, and the outer shape of each sheet is annular, and each sheet is provided with a plurality of guide grooves, and a plurality of annular shielding sheets are rotatably and slidably arranged between the first ring body and the second ring body, and each adjacent two shielding sheets are in contact with each other, and guide rods inserted into the corresponding guide grooves of each sheet are provided on both sides of the shielding sheets, and when each guide rod is respectively located on the side of the corresponding guide groove close to the center of each sheet, each shielding sheet will shield the opening of the protective cover; when each guide rod is respectively located on the side of the corresponding guide groove away from the center of each sheet, each shielding sheet will not shield the opening of the protective cover, and the antibacterial sheet is arranged on the side of the first ring body away from the second ring body.

[0011] Furthermore, a magnet is provided on the side wall of the second ring body, and two magnetic plates that cooperate with the magnet are provided on the protective cover. When the shielding component covers the end of the protective cover and exposes the end of the protective cover, the magnet is magnetically attracted to the corresponding magnetic plate.

[0012] Furthermore, each shielding piece is provided with a sealing piece, and the sealing piece is used to seal the connection between every two adjacent shielding pieces.

[0013] Furthermore, the protective cover includes a cylindrical cover body, and storage cavities that are interconnected are provided in the side walls of the cover body and the wall on the side close to the shielding component, in which disinfectant is stored, and a liquid inlet that is connected to the interior of the storage cavity is provided on the side wall of the cover body, and an adjustment groove that is located at the top of the storage cavity and is interconnected is provided in the side wall of the cover body, and a push frame extending into the storage cavity is slidably inserted at the corresponding adjustment groove of the cover body, and the junction of the corresponding adjustment groove of the cover body and the storage cavity is dynamically sealed with the push frame, and the top of the push frame is provided with a tension spring that contacts the top wall of the cover body, and the end of the push frame away from the tension spring is provided with a drainage assembly, and the downward movement of the push frame is used to connect the drainage assembly with the interior of the storage cavity and discharge the disinfectant onto the antibacterial sheet.

[0014] Furthermore, the protective cover also includes a sealing sleeve arranged on the bottom wall of the corresponding storage cavity of the cover body and connected to the storage cavity, and a first perforation is provided on the side wall of the sealing sleeve. The drainage assembly includes a drainage needle arranged at the bottom of the pushing frame, and the drainage needle is slidably inserted into the sealing sleeve and dynamically sealed therewith. The interior of the drainage needle is hollow, and a drainage port connected to the interior is provided at the bottom thereof. A second perforation is provided on the side wall of the drainage needle to connect to the interior. The pushing frame is used to drive the drainage needle to move downward synchronously, and after the second perforation is aligned with the first perforation, the disinfectant in the storage cavity can pass through each perforation and enter the drainage needle.

[0015] Furthermore, the side of the drainage needle close to the antibacterial sheet is conical, and the antibacterial sheet is a disposable sheet. When the drainage needle moves downward to contact the antibacterial sheet, the second perforation is aligned with the first perforation at the same time.

[0016] The beneficial effects of the present invention are as follows:

[0017] The utility model controls the shielding component to move and release the shielding state of the opening of the protective cover when an injection is required. At this time, the device body is stimulated to make the emission head spray out the medicine and the injection treatment can be carried out. When injection is not required, the shielding component can be controlled to move back to its original position and cover the opening of the protective cover. It cooperates with the protective cover to put the emission head in a closed state, which can prevent external factors from affecting the emission head. Moreover, when injecting, the antibacterial sheet contacts the skin, and the syringe body itself does not contact the skin. After use, it is only necessary to replace the antibacterial sheet. Therefore, the emission end of the needle-free syringe has good safety both when it is in use and when it is not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional view of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the shielding component in the present invention;

[0020] Figure 3 For this utility model Figure 1 A partial view of the shown A;

[0021] Figure 4 For this utility model Figure 1 A partial view of B shown;

[0022] Figure 5 It is a partial cross-sectional view of the protective cover in the present utility model;

[0023] Figure 6 It is an external view of the present utility model.

[0024] In the picture:

[0025] 1. Syringe body; 11. Syringe body; 12. Launch head; 2. Protective cover; 21. Cover body; 22. Storage chamber; 23. Adjustment slot; 24. Liquid inlet; 25. Push frame; 26. Tension spring; 27. Sealing sleeve; 28. First perforation; 3. Shielding assembly; 31. First ring body; 32. Second ring body; 33. Guide groove; 34. Guide rod; 35. Shielding sheet; 4. Antibacterial sheet; 5. Magnet; 6. Drainage assembly; 61. Drainage needle; 62. Second perforation; 63. Drainage port. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-6 The present invention discloses a needle-free syringe, including a syringe body 1. The syringe body 1 includes a body 11 and a launch head 12 installed at one end of the body 11. When the body 11 is stimulated, the medicine is sprayed out from the launch head 12. The syringe body 1 is common knowledge in the field, so the specific structure and working principle of the syringe body 1 will not be described in detail in this article.

[0028] In one embodiment, a protective cover 2 is provided on the launch head 12. The interior of the protective cover 2 is hollow. The end of the protective cover 2 away from the syringe body 1 is open, and the opening is used to accommodate the injection end of the syringe body 1. A shielding component 3 is provided at the end of the protective cover 2 away from the syringe body 1. The shielding component 3 is used to shield the opening at the end of the protective cover 2 and expose the opening at the end of the protective cover 2. A sterilization sheet 4 is detachably provided on the side of the shielding component 3 away from the protective cover 2. A clearance hole is provided on the sterilization sheet 4 corresponding to the injection end of the syringe body 1. The sterilization sheet 4 is used to prevent the skin from contacting the injection end of the syringe body 1 when the syringe body 1 is working.

[0029] In a specific implementation, when an injection is required, the shielding component 3 is controlled to move and release the shielding state of the opening of the protective cover 2. At this time, the device body 11 is stimulated to make the launch head 12 spray out the medicine for injection treatment. When injection is not required, the shielding component 3 can be controlled to move and reset and cover the opening of the protective cover 2. It cooperates with the protective cover 2 to put the launch head 12 in a closed state, which can prevent external factors from affecting the launch head 12. Moreover, when injecting, the antibacterial sheet 4 contacts the skin, and the syringe body 1 itself does not contact the skin. After use, only the antibacterial sheet 4 needs to be replaced. Therefore, the launch end of the needle-free syringe has good safety both when in use and when not in use.

[0030] In one embodiment, the shielding assembly 3 includes a first ring body 31 installed on the side of the protective cover 2 away from the syringe body 1, and a second ring body 32 is rotatably installed on the bottom of the protective cover 2. The second ring body 32 is located between the protective cover 2 and the first ring body 31, and the outer shape of each sheet is annular. Each sheet is provided with a plurality of guide grooves 33. A plurality of shielding sheets 35 distributed in an annular shape are rotatably and slidably installed between the first ring body 31 and the second ring body 32. Every two adjacent shielding sheets 35 are in contact with each other, and guide rods 34 inserted into the corresponding guide grooves 33 of each sheet are installed on both sides of the shielding sheet 35.

[0031] When the shutter 35 is moved to the side away from the center of each sheet body, it will gradually expose the opening of the protective cover 2 that was originally in the blocking state. In combination with the protective cover 2, the shutter 35 can keep the launch head 12 in a closed state when not in use and release the seal when in use.

[0032] In one embodiment, a magnet 5 is installed on the side wall of the second ring body 32, and two magnetic plates (not shown in the figure) that are magnetically matched with the magnet 5 are embedded in the protective cover 2. When the shielding component 3 covers the end of the protective cover 2 and exposes the end of the protective cover 2, the magnet 5 is magnetically attracted to the corresponding magnetic plates.

[0033] In a specific implementation, when the second ring body 32 rotates to the point where each shielding piece 35 blocks the opening of the protective cover 2, the magnet 5 is magnetically attracted to one of the magnetic pieces for positioning; when the second ring body 32 rotates to the point where each shielding piece 35 releases the blocking of the opening of the protective cover 2, the magnet 5 is magnetically attracted to the other magnetic piece for positioning. The arrangement of the magnet 5 and the magnetic piece enables the shielding component 3 to not be easily released after being adjusted to the corresponding state, thereby improving safety of use.

[0034] In one embodiment, a sealing sheet is provided on each shielding sheet 35 . The sealing sheet is used to seal the connection between every two adjacent shielding sheets 35 . The sealing sheet may be a silicone sheet.

[0035] This design can further improve the sealing performance when the shielding pieces 35 contact each other and shield the opening of the protective cover 2, thereby increasing safety.

[0036] In one embodiment, the protective cover 2 includes a cover body 21 that is cylindrically sleeved on the launch head 12, and a storage chamber 22 that is interconnected is provided in the side wall of the cover body 21 and in the wall on the side close to the shielding component 3, in which disinfectant is stored, and a liquid inlet 24 that is connected to the interior of the storage chamber 22 is provided on the side wall of the cover body 21, and the liquid inlet 24 is in a normally closed state. When the liquid inlet 24 is opened, the disinfectant can be injected into the storage chamber 22, and an adjustment groove 23 is provided in the side wall of the cover body 21, which is located at the top of the storage chamber 22 and is interconnected with it. A push rack 25 extending into the storage chamber 22 is slidably inserted in the corresponding adjustment groove 23 of the cover body 21, and the junction of the corresponding adjustment groove 23 of the cover body 21 and the storage chamber 22 is dynamically sealed with the push rack 25, and a tension spring 26 that contacts the inner top wall of the cover body 21 is installed on the top of the push rack 25, and a discharge assembly 6 is provided at the end of the push rack 25 away from the tension spring 26.

[0037] With this design, the push frame 25 moves downward to connect the discharge assembly 6 with the interior of the storage chamber 22, and the disinfectant in the storage chamber 22 passes through the discharge assembly 6 and is discharged onto the antibacterial sheet 4. The staff holds the syringe body 1 and brings the antibacterial sheet 4 into contact with the skin at the injection site and then wipes it, thereby disinfecting the skin. The syringe body 1, the protective cover 2 and the shielding assembly 3 will not directly contact the skin, and the tension spring 26 is used to reset the push frame 25, so that the push frame 25 moves upward and returns to its position.

[0038] In one embodiment, the protective cover 2 also includes a sealing sleeve 27 installed on the bottom wall of the corresponding storage cavity 22 of the cover body 21 and connected to the storage cavity 22. A first perforation 28 is provided on the side wall of the sealing sleeve 27. The drainage component 6 includes a drainage needle 61 installed at the bottom of the pushing frame 25. The drainage needle 61 is slidably inserted into the sealing sleeve 27 and dynamically sealed therewith. The interior of the drainage needle 61 is hollow, and a drainage port 63 connected to the interior is provided at the bottom thereof. A second perforation 62 connected to the interior is provided on the side wall of the drainage needle 61. The pushing frame 25 is used to drive the drainage needle 61 to move downward synchronously. After the second perforation 62 is aligned with the first perforation 28, the disinfectant in the storage cavity 22 can pass through the perforations and enter the drainage needle 61.

[0039] During the specific implementation, the staff presses the push frame 25 and pushes it downward, and the drainage needle 61 drops synchronously until the first perforation 28 is connected to the second perforation 62. The disinfectant inside the storage chamber 22 can pass through the first perforation 28 and the second perforation 62 in turn and enter the drainage needle 61, and be discharged downward through the drainage port 63. The disinfectant is discharged into the antibacterial sheet 4 to facilitate wiping and antibacterial.

[0040] It should be noted that a plurality of connecting holes are provided on the pushing frame 25. Since the second perforation 62 is a certain distance away from the first perforation 28 when the pushing frame 25 descends and the second perforation 62 is not aligned with the first perforation 28, part of the disinfectant will flow upward through the connecting holes. After the pushing frame 25 descends to align the second perforation 62 with the first perforation 28, part of the disinfectant can directly enter the drainage needle 61 and be discharged.

[0041] In one embodiment, the side of the drainage needle 61 close to the antibacterial sheet 4 is conical, and the antibacterial sheet 4 is a disposable cotton sheet. When the drainage needle 61 moves downward to contact the antibacterial sheet 4, the second perforation 62 is aligned with the first perforation 28 at the same time.

[0042] This design enables the disinfectant to be directly discharged from the drain port 63 into the antibacterial sheet 4 and gradually diffused. After the antibacterial sheet 4 is used up, it can be removed and replaced.

[0043] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] In addition, "plurality" means two or more.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A needle-free syringe, characterized in that: include, A syringe body (1) which ejects medicine from an injection end after being activated; A protective cover (2) is provided at the injection end of the syringe body (1); the protective cover (2) is hollow inside and is used to accommodate the injection end of the syringe body (1); and the end of the protective cover (2) away from the syringe body (1) is open; a shielding assembly (3), which is arranged at one end of the protective cover (2) away from the syringe body (1) and is used to shield the opening at the end of the protective cover (2) and to expose the opening at the end of the protective cover (2); An antibacterial sheet (4) is detachably arranged on a side of the shielding component (3) away from the protective cover (2); a clearance hole is provided on the antibacterial sheet (4) at the injection end of the corresponding syringe body (1); and the antibacterial sheet (4) is used to prevent the skin from contacting the injection end of the syringe body (1) when the syringe body (1) is in operation.

2. The needle-free syringe according to claim 1, characterized in that: The shielding assembly (3) comprises a first ring body (31) arranged on a side of the protective cover (2) away from the syringe body (1); a second ring body (32) is rotatably arranged at the bottom of the protective cover (2); the second ring body (32) is located between the protective cover (2) and the first ring body (31); and each sheet body has an annular shape and a plurality of guide grooves (33) are provided on each sheet body; a plurality of shielding sheets (35) distributed in an annular shape are rotatably and slidably arranged between the first ring body (31) and the second ring body (32); and each adjacent shielding sheet (35) contacts each other. Both sides of the shielding sheet (35) are provided with guide rods (34) inserted into the corresponding guide grooves (33) of each sheet body. When each guide rod (34) is located on the side of the corresponding guide groove (33) close to the center of each sheet body, each shielding sheet (35) will shield the opening of the protective cover (2); when each guide rod (34) is located on the side of the corresponding guide groove (33) away from the center of each sheet body, each shielding sheet (35) will not shield the opening of the protective cover (2). The antibacterial sheet (4) is arranged on the side of the first ring body (31) away from the second ring body (32).

3. The needle-free syringe according to claim 2, characterized in that: A magnet (5) is provided on the side wall of the second ring body (32), and two magnetic sheets that are magnetically matched with the magnet (5) are provided on the protective cover (2). When the shielding component (3) shields the end of the protective cover (2) and exposes the end of the protective cover (2), the magnet (5) is magnetically attracted to the corresponding magnetic sheet.

4. The needle-free syringe according to claim 2, characterized in that: Each shielding piece (35) is provided with a sealing piece, and the sealing piece is used to seal the connection between each two adjacent shielding pieces (35).

5. The needle-free syringe according to claim 1, characterized in that: The protective cover (2) comprises a cylindrical cover body (21), a storage cavity (22) which is interconnected is provided in the side wall of the cover body (21) and in the wall on the side close to the shielding component (3), wherein disinfectant is stored in the storage cavity (22), a liquid inlet (24) which is connected to the interior of the storage cavity (22) is provided on the side wall of the cover body (21), an adjustment groove (23) which is located at the top of the storage cavity (22) and is interconnected is provided in the side wall of the cover body (21), and a slidable plug-in device is provided at the corresponding adjustment groove (23) of the cover body (21) There is a push frame (25) extending into the storage cavity (22), the junction between the corresponding adjustment groove (23) of the cover body (21) and the storage cavity (22) is dynamically sealed with the push frame (25), and the top end of the push frame (25) is provided with a tension spring (26) in contact with the inner top wall of the cover body (21), and the end of the push frame (25) away from the tension spring (26) is provided with a drainage component (6), and the downward movement of the push frame (25) is used to connect the drainage component (6) with the inside of the storage cavity (22) and discharge the disinfectant onto the antibacterial sheet (4).

6. The needle-free syringe according to claim 5, characterized in that: The protective cover (2) further comprises a sealing sleeve (27) arranged on the bottom wall of the corresponding storage cavity (22) of the cover body (21) and connected to the storage cavity (22); a first perforation (28) is provided on the side wall of the sealing sleeve (27); the drainage component (6) comprises a drainage needle (61) arranged at the bottom of the pushing frame (25); the drainage needle (61) is slidably inserted into the sealing sleeve (27) and dynamically sealed therewith; the interior of the drainage needle (61) is hollow, and a drainage port (63) connected to the interior is provided at the bottom thereof; a second perforation (62) connected to the interior is provided on the side wall of the drainage needle (61); the pushing frame (25) is used to drive the drainage needle (61) to move downward synchronously, and after the second perforation (62) is aligned with the first perforation (28), the disinfectant in the storage cavity (22) can pass through each perforation and enter the drainage needle (61).

7. The needle-free syringe according to claim 6, characterized in that: The side of the drainage needle (61) close to the antibacterial sheet (4) is conical, and the antibacterial sheet (4) is a disposable sheet. When the drainage needle (61) moves downward until it contacts the antibacterial sheet (4), the second perforation (62) is aligned with the first perforation (28) at the same time.

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