A protective device for injection for nursing use

Abstract

The present invention belongs to the technical field of medical devices, and in particular to a protective device for injection for nursing, comprising an intravenous indwelling needle, wherein the inner side of the intravenous indwelling needle is clamped with a protective mechanism; when performing intravenous injection on a patient, a push rod is pushed, and the push rod drives a limit frame to move toward the outer side of a dosage barrel, and during the movement, a limit gear in the limit frame can slide along the inner teeth of a positioning rack seat, so that the limit gear drives a sliding seat to translate inside the limit frame, and ensures that the limit frame can move at a synchronous speed with the push rod, so that the push rod is decelerated during the movement, and prevents medical staff from slipping their hands and causing injection to be too fast, thereby increasing the pain of the patient, and thus protecting the patient; after the injection is completed, the intravenous indwelling needle needs to be removed, and the device only needs to increase the force to push the push rod, thereby releasing the tight effect on the intravenous indwelling needle, and the medical staff only needs to reverse the dosage barrel to pour the intravenous indwelling needle out of the inside of the sleeve rubber ring, thereby enhancing the protective effect on the medical staff.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a protective device for injection used for nursing. Background Art

[0002] The current intravenous catheter, as a replacement product for scalp steel needles, has been widely used in clinical practice in recent years and has become an important tool for clinical infusion and medication due to its advantages such as simple operation, long retention time, reduced number of punctures, protection of blood vessels, relief of patient pain, and improved work efficiency of nursing staff.

[0003] At present, hospitals use disposable syringes for injections. Disposable syringes need to be disposed of after use, but medical staff are easily stabbed when handling the needles, which affects their safety. In addition, the pressing speed of the syringe barrel is not easy to control. If the injection is too fast, it will cause the patient's pain to increase and the user experience will be poor.

[0004] For this reason, a nursing injection protection device is designed to solve the above problems. Summary of the invention

[0005] To solve the problems raised in the above-mentioned background technology. The present invention provides a protective device for injection for nursing use, which can insert an intravenous indwelling needle between two groups of arc blocks to complete abutment and fixation, pull out the push rod, and under negative pressure, allow the liquid medicine to be sucked into the inside of the dosage barrel. When performing intravenous injection on the patient, push the push rod, and the push rod drives the limit frame to move to the outside of the dosage barrel. During this process, the limit frame is stably translated left and right under the limiting action of the special-shaped groove on the fixed ring. During the movement, the limit gear in the limit frame can slide along the inner teeth of the positioning rack seat, so that the limit gear drives the sliding seat to translate inside the limit frame, ensuring that the limit frame can move at a synchronous speed with the push rod. According to the gear transmission principle, the push rod is decelerated during the movement to prevent medical staff from slipping their hands and causing the injection to be too fast, thereby increasing The patient's pain is reduced, thereby protecting the patient; and when the intravenous catheter needs to be removed after the injection is completed, the device only needs to increase the force to push the push rod, and the inner side of the push rod pushes the limit block, so that the limit block moves along the slide groove in the sleeve rubber ring of the clamping part and contacts the movable block. In this process, the limit spring is compressed, and the elastic characteristics of the spring ensure that the movable block and the limit block move toward the inside of the fixed seat. When the groove of the limit block is flush with the positioning block, the compression spring recovers, the positioning block extends into the groove, and the arc block loses the squeezing force, thereby releasing the tight effect on the intravenous catheter. The medical staff only needs to reverse the dosage barrel to pour the intravenous catheter out of the sleeve rubber ring to prevent the medical staff from being stabbed when taking the needle, thereby enhancing the protection effect on medical workers.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a protective device for injection for nursing use, comprising an intravenous indwelling needle, the inner side of which is clamped with a protective mechanism;

[0007] The protection mechanism includes a dose barrel, a sleeve rubber ring, a fixed ring, a limit frame, a push rod and a clamping portion, one side of the sleeve rubber ring is adhesively connected to the surface of the dose barrel, the surface of the dose barrel is slidably connected to the bottom of the limit frame, one side of the limit frame is fixedly connected to the surface of the push rod, one side of the push rod is slidably sleeved inside the dose barrel, the inner surface of the fixed ring is slidably connected to the outer wall of the limit frame, and the clamping portion is fixedly connected to the outside of the sleeve rubber ring.

[0008] As a preferred protective device for injection for nursing use of the present invention, the clamping part includes a limit block, a fixed seat, a movable block and a limit spring, the limit block is movably sleeved on the outside of the sleeve rubber ring, the bottom of the fixed seat is fixedly connected to the inner wall surface of the sleeve rubber ring, the movable block is slidably sleeved inside the fixed seat, and the two sides of the limit spring are respectively fixedly connected to the surfaces of the fixed seat and the movable block.

[0009] As a preferred protective device for injection for nursing use of the present invention, a sliding seat and a limiting gear are also provided inside the limiting frame, the bottom of the sliding seat is fixedly connected to the inner wall surface of the limiting frame, and the two sides of the limiting gear are movably sleeved on the middle of the opposite sides of the sliding seat.

[0010] As a preferred embodiment of the protective device for injection for nursing use of the present invention, a positioning rack seat is further provided on the surface of the dosage barrel, and the inner teeth of the positioning rack seat are meshed with the limiting gear.

[0011] As a preferred embodiment of the protective device for injection for nursing use of the present invention, a special-shaped groove matching the size of the limiting frame is provided inside the fixing ring.

[0012] As a preferred embodiment of the protective device for injection for nursing use of the present invention, a sliding groove matching the size of the limiting block is provided inside the sleeve rubber ring.

[0013] As a preferred nursing injection protection device of the present invention, a positioning block, a compression spring and an arc block are further provided inside the side of the sleeve rubber ring away from the limit block, one side of the positioning block is slidably connected to the opposite side surface of the movable block, the outer side of the arc block abuts against the bottom of the intravenous indwelling needle, and the two sides of the compression spring are fixedly connected to the surfaces of the positioning block and the arc block respectively.

[0014] As a preferred embodiment of the protective device for injection for nursing use of the present invention, a groove matching the size of the positioning block is provided on one side of the top of the limiting block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, an intravenous indwelling needle is inserted between two groups of arc blocks to complete the abutment and fixation, and the push rod is pulled out. Under negative pressure, the medicine is sucked into the inside of the dosage barrel. When the patient is given an intravenous injection, the push rod is pushed, and the push rod drives the limit frame to move to the outside of the dosage barrel. In this process, the limit frame is stably translated left and right under the limiting action of the special-shaped groove on the fixed ring. When moving, the limit gear in the limit frame can slide along the inner teeth of the positioning rack seat, so that the limit gear drives the sliding seat to translate inside the limit frame, ensuring that the limit frame can move at a synchronous speed with the push rod. According to the gear transmission principle, the push rod is decelerated during the movement to prevent medical staff from slipping their hands, causing the injection to be too fast, thereby increasing the patient's pain, thereby protecting the patient.

[0017] 2. In the present invention, after the injection is completed, the intravenous indwelling needle needs to be removed. The device only needs to increase the force to push the push rod, and the inner side of the push rod pushes the limit block, so that the limit block moves along the slide groove in the sleeve rubber ring of the clamping part and contacts the movable block. In this process, the limit spring is compressed, and the elastic characteristics of the spring ensure that the movable block and the limit block move toward the inside of the fixed seat. When the groove of the limit block is flush with the positioning block, the compression spring is restored, the positioning block extends into the groove, and the arc block loses its squeezing force, thereby releasing its tight effect on the intravenous indwelling needle. The medical staff only needs to reverse the dosage barrel to pour the intravenous indwelling needle out of the sleeve rubber ring to prevent the medical staff from being stabbed when taking the needle, thereby enhancing the protection effect on medical workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the protection mechanism in the present invention;

[0021] Figure 3 It is a structural schematic diagram of the positioning rack seat and the limiting frame in the present invention;

[0022] Figure 4 It is a structural schematic diagram of a cross section of the limiting frame in the present invention;

[0023] Figure 5 It is a structural schematic diagram of the cross section of the dosage tube in the present invention;

[0024] Figure 6It is a schematic diagram of the structure of the exploded sleeve rubber ring in the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the outer and inner parts of the sleeve rubber ring in the present invention;

[0026] Figure 8 It is a structural schematic diagram of the position of the limit spring in the present invention;

[0027] In the figure:

[0028] 1. Intravenous indwelling needle;

[0029] 2. Protective mechanism; 21. Dosing cylinder; 22. Sleeve rubber ring; 23. Fixed ring; 24. Limiting frame; 25. Push rod; 26. Clamping part; 261. Limiting block; 262. Fixed seat; 263. Movable block; 264. Limiting spring; 3. Sliding seat; 4. Limiting gear; 5. Positioning rack seat; 6. Special-shaped groove; 7. Sliding groove; 8. Positioning block; 9. Compression spring; 10. Arc block; 11. Groove. DETAILED DESCRIPTION

[0030] 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 described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1 As shown:

[0032] A protective device for injection for nursing use comprises an intravenous indwelling needle 1. Currently, disposable syringes are used for injection in hospitals. After use, the disposable syringes need to be handled for the intravenous indwelling needle 1, but medical staff are easily stabbed when handling the intravenous indwelling needle 1, which affects the safety of the medical staff; and the pressing speed of the syringe barrel is not easy to control. If the injection is too fast, it will cause the patient's pain to increase, and the user experience is poor. On this basis, a protective mechanism 2 is added, which can reduce the advancement rate of the drug solution to prevent the patient's pain from being aggravated by too fast injection, and the protective mechanism 2 can more conveniently remove the intravenous indwelling needle 1, prevent the medical staff from pricking their fingers when removing the intravenous indwelling needle 1, and thus protect the medical staff.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown:

[0034] In an optional embodiment: the protection mechanism 2 includes a dose barrel 21, a sleeve rubber ring 22, a fixed ring 23, a limit frame 24, a push rod 25 and a clamping portion 26, one side of the sleeve rubber ring 22 is adhesively connected to the surface of the dose barrel 21, the surface of the dose barrel 21 is slidably connected to the bottom of the limit frame 24, one side of the limit frame 24 is fixedly connected to the surface of the push rod 25, one side of the push rod 25 is slidably sleeved inside the dose barrel 21, the inner surface of the fixed ring 23 is slidably connected to the outer wall of the limit frame 24, the clamping portion 26 is fixedly connected to the outer side of the sleeve rubber ring 22, a sliding seat 3 and a limit gear 4 are also provided inside the limit frame 24, the bottom of the sliding seat 3 is fixedly connected to the inner wall of the limit frame 24, the two sides of the limit gear 4 are movably sleeved in the middle of the opposite sides of the sliding seat 3, and a positioning rack seat 5 is also provided on the surface of the dose barrel 21, and the inner teeth of the positioning rack seat 5 are meshed with the limit gear 4.

[0035] In this embodiment: the intravenous indwelling needle 1 is inserted between the two groups of arc blocks 10 to complete the abutment and fixation, and the push rod 25 is pulled out. Under the negative pressure state, the drug solution is sucked into the inside of the dosage barrel 21. When the patient is given an intravenous injection, the push rod 25 is pushed, and the push rod 25 drives the limit frame 24 to move to the outside of the dosage barrel 21. In this process, the limit frame 24 is stably translated left and right under the limiting action of the special-shaped groove 6 on the fixing ring 23. During the movement, the limit gear 4 in the limit frame 24 can slide along the inner teeth of the positioning rack seat 5, so that the limit gear 4 drives the sliding seat 3 to translate inside the limit frame 24, ensuring that the limit frame 24 can move at a synchronous speed with the push rod 25. According to the gear transmission principle, the push rod 25 is decelerated during the movement to prevent the medical staff from slipping and causing the injection to be too fast, thereby increasing the patient's pain, thereby protecting the patient.

[0036] It should be noted that a special-shaped groove 6 matching the size of the limit frame 24 is provided inside the fixed ring 23, and the special-shaped groove 6 limits the moving direction of the limit frame 24, thereby ensuring that the limit gear 4 can always mesh and move forward on the internal teeth of the positioning rack seat 5, thereby preventing the limit gear 4 from derailing.

[0037] More specifically:

[0038] like Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown:

[0039] In an optional embodiment, the clamping portion 26 includes a limit block 261, a fixed seat 262, a movable block 263 and a limit spring 264. The limit block 261 is movably sleeved on the outside of the sleeve rubber ring 22, the bottom of the fixed seat 262 is fixedly connected to the inner wall surface of the sleeve rubber ring 22, the movable block 263 is slidably sleeved inside the fixed seat 262, the two sides of the limit spring 264 are respectively fixedly connected to the surfaces of the fixed seat 262 and the movable block 263, and the interior of the sleeve rubber ring 22 is provided with a A slide groove 7 is adapted to the size of the limit block 261, and a positioning block 8, a compression spring 9 and an arc block 10 are also arranged inside the side of the sleeve rubber ring 22 away from the limit block 261. One side of the positioning block 8 is slidingly connected to the opposite side surface of the movable block 263, the outer side of the arc block 10 abuts against the bottom of the intravenous indwelling needle 1, and the two sides of the compression spring 9 are fixedly connected to the surfaces of the positioning block 8 and the arc block 10 respectively. A groove 11 adapted to the size of the positioning block 8 is opened on one side of the top of the limit block 261.

[0040] In this embodiment: after the injection is completed, the intravenous indwelling needle 1 needs to be removed. The device only needs to increase the force to push the push rod 25. The inner side of the push rod 25 pushes the limit block 261, so that the limit block 261 moves along the slide groove 7 in the sleeve rubber ring 22 of the clamping part 26 and contacts the movable block 263. During this process, the limit spring 264 is compressed. Through the elastic characteristics of the spring, it is ensured that the movable block 263 and the limit block 261 move toward the inside of the fixed seat 262. When the groove 11 of the limit block 261 is flush with the positioning block 8, the compression spring 9 is restored, the positioning block 8 extends into the groove 11, and the arc block 10 loses its squeezing force, thereby releasing its tight effect on the intravenous indwelling needle 1. The medical staff only needs to reverse the dosage barrel 21 to pour the intravenous indwelling needle 1 out of the sleeve rubber ring 22 to prevent the medical staff from being stabbed when taking the needle, thereby enhancing the protection effect on the medical staff.

[0041] It should be noted that the compression spring 9 is always in a compressed state during injection, so that the arc block 10 can continuously press against the intravenous indwelling needle 1 and thus stabilize the intravenous indwelling needle 1 to prevent it from falling off.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A protective device for injection for nursing use, comprising an intravenous indwelling needle (1), characterized in that: The inner side of the intravenous indwelling needle (1) is clamped with a protective mechanism (2); The protection mechanism (2) comprises a dosage barrel (21), a sleeve rubber ring (22), a fixing ring (23), a limiting frame (24), a push rod (25) and a clamping portion (26); one side of the sleeve rubber ring (22) is adhesively connected to the surface of the dosage barrel (21); the surface of the dosage barrel (21) is slidably connected to the bottom of the limiting frame (24); one side of the limiting frame (24) is fixedly connected to the surface of the push rod (25); one side of the push rod (25) is slidably sleeved inside the dosage barrel (21); the inner surface of the fixing ring (23) is slidably connected to the outer wall of the limiting frame (24); and the clamping portion (26) is fixedly connected to the outer side of the sleeve rubber ring (22); The clamping portion (26) comprises a limit block (261), a fixed seat (262), a movable block (263) and a limit spring (264); the limit block (261) is movably sleeved on the outside of the sleeve rubber ring (22); the bottom of the fixed seat (262) is fixedly connected to the inner wall surface of the sleeve rubber ring (22); the movable block (263) is slidably sleeved inside the fixed seat (262); and two sides of the limit spring (264) are respectively fixedly connected to the surfaces of the fixed seat (262) and the movable block (263); A sliding seat (3) and a limiting gear (4) are also provided inside the limiting frame (24); the bottom of the sliding seat (3) is fixedly connected to the inner wall surface of the limiting frame (24); and the two sides of the limiting gear (4) are movably sleeved on the middle of the opposite sides of the sliding seat (3).

2. The protective device for injection for nursing use according to claim 1, characterized in that: A positioning rack seat (5) is also provided on the surface of the dosage barrel (21), and the inner teeth of the positioning rack seat (5) are meshed with the limiting gear (4).

3. The protective device for injection for nursing use according to claim 2, characterized in that: A special-shaped groove (6) having a size matching that of the limiting frame (24) is provided inside the fixing ring (23).

4. The protective device for injection for nursing use according to claim 1, characterized in that: A sliding groove (7) matching the size of the limiting block (261) is provided inside the sleeve rubber ring (22).

5. The protective device for injection for nursing use according to claim 4, characterized in that: A positioning block (8), a compression spring (9) and an arc block (10) are further provided inside the side of the sleeve rubber ring (22) away from the limit block (261); one side of the positioning block (8) is slidably connected to the opposite side surface of the movable block (263); the outer side of the arc block (10) is in contact with the bottom of the intravenous indwelling needle (1); and the two sides of the compression spring (9) are fixedly connected to the surfaces of the positioning block (8) and the arc block (10), respectively.

6. The protective device for injection for nursing use according to claim 5, characterized in that: A groove (11) matching the size of the positioning block (8) is provided on one side of the top of the limiting block (261).

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