Needle springback protection device for venous infusion apparatus

Abstract

The invention discloses a springback protection device for a needle head of an intravenous infusion apparatus, and relates to the technical field of medical instruments. The device comprises an infusion tube, a connector is fixedly connected to the top of the infusion tube, an infusion needle is fixedly connected to the top of the connector, and a needle handle is fixedly connected to one side of the connector; a springback assembly is arranged on the surface of the infusion tube and comprises a sleeve, the sleeve is fixedly connected to one end of the surface of the infusion tube, a protective sleeve is slidably connected into the sleeve, and the top of the protective sleeve extends out of the sleeve. By pressing an inclined block, the inclined block is shrunk into a placement groove, then a second spring rebounds to drive a limiting block to move, the limiting block drives a protective sleeve to move, and the protective sleeve sleeves the surface of an infusion needle, so that the purpose of automatic rebounding is achieved, the situation that the needle hurts people can be effectively avoided, and the device is simple in structure, high in practicability and convenient to use. The popularization is worthy.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a needle rebound protection device for an intravenous infusion device. Background Art

[0002] An intravenous infusion set is a medical device used to infuse liquid medicine or nutrient solution into the patient's blood through the vein. It is a commonly used medical device and is widely used in medical institutions, emergency centers, nursing institutions and other fields. An intravenous infusion set mainly consists of the following parts: 1. Needle: used to insert into the patient's vein, for the entrance and exit of infusion; 2. Infusion tube: connects the needle and the liquid medicine bottle or infusion equipment, for the transmission of infusion; 3. Infusion bottle: used to store and supply liquid medicine or nutrient solution; 4. Flow regulator: used to control the flow rate and flow of infusion. The function of an intravenous infusion set is to deliver liquid medicine or nutrient solution into the patient's blood for the treatment of diseases, maintenance of life activities, improvement of the patient's physical condition, etc.

[0003] The needle protection device of the intravenous infusion set in the prior art is mostly a detachable protective cap. Medical staff will mostly throw away the protective cap during normal infusion. When the infusion is over, it is easy to find that the protective cap is not there, which can easily cause the needle to injure people. To this end, we provide a needle rebound protection device for an intravenous infusion set to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a needle rebound protection device for an intravenous infusion set, which solves the problem of poor use effect of the needle protection device for an intravenous infusion set in the prior art through the provision of a rebound component.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a needle rebound protection device for an intravenous infusion device, comprising an infusion tube, a connector fixedly connected to the top of the infusion tube, an infusion needle fixedly connected to the top of the connector, and a needle handle fixedly connected to one side of the connector;

[0007] A rebound component is provided on the surface of the infusion tube, and the rebound component includes a sleeve, the sleeve is fixedly connected to one end of the surface of the infusion tube, a protective sleeve is slidably connected inside the sleeve, the top of the protective sleeve extends to the outside of the sleeve, the top and bottom of one side of the protective sleeve are fixedly connected with a clamping block, a clamping groove is provided inside the clamping block, a placement groove is provided inside the needle handle, a first spring is fixedly connected inside the placement groove, a sliding plate is fixedly connected to the free end of the first spring, an inclined block is fixedly connected to one side of the sliding plate, and the free end of the inclined block extends to the inside of the clamping groove.

[0008] The present invention is further configured as follows: a groove is provided on the inner wall of the sleeve, a vertical rod is fixedly connected inside the groove, a second spring is sleeved on the surface of the vertical rod, a limiting block is fixedly connected to the bottom of the surface of the protective cover, a limiting hole is provided inside the limiting block, the diameter of the limiting hole is larger than the diameter of the vertical rod, the limiting block is sleeved on the surface of the vertical rod, and is fixedly connected to the top of the second spring.

[0009] The present invention is further configured such that a protective cap is movably connected to the top of the protective sleeve, and the protective cap is made of medical rubber material.

[0010] The present invention is further configured such that a first vertical groove is provided on one side of the sleeve, and a diameter of the first vertical groove is greater than a diameter of the block.

[0011] The present invention is further configured such that a second vertical groove is formed on one side of the protective sleeve, and a diameter of the second vertical groove is greater than a diameter of the needle handle.

[0012] The present invention is further configured such that the number of the grooves is four and the number of the limit blocks is four.

[0013] The present invention has the following beneficial effects:

[0014] The present invention presses the inclined block to shrink it into the placement groove, and then the second spring rebounds to drive the limit block to move, and the limit block drives the protective cover to move, so that the protective cover is covered on the surface of the infusion needle, so as to achieve the purpose of automatic rebound, thereby effectively avoiding the needle from hurting people. The present invention has a simple structure and high practicality, and is worthy of promotion.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0017] Figure 1 It is a stereoscopic diagram of the overall structure of the needle rebound protection device of the intravenous infusion set;

[0018] Figure 2 A schematic diagram of a partial explosion of a needle rebound protection device for an intravenous infusion set;

[0019] Figure 3 It is a schematic diagram of the explosion of the sleeve and the protective sleeve in the needle rebound protection device of the intravenous infusion set;

[0020] Figure 4 For intravenous infusion needle rebound protection device Figure 3 A is an enlarged schematic diagram;

[0021] Figure 5 It is a cross-sectional view of the needle handle in the needle rebound protection device of the intravenous infusion set.

[0022] In the attached drawings: 1. infusion tube; 2. connector; 3. infusion needle; 4. needle handle; 5. cannula; 6. protective cover; 7. clamping block; 8. clamping slot; 9. placement slot; 10. first spring; 11. sliding plate; 12. inclined block; 13. groove; 14. vertical rod; 15. second spring; 16. limit block; 17. limit hole; 18. protective cap; 19. first vertical slot; 20. second vertical slot. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Specific embodiment 1

[0025] See also Figure 1-5 The present invention is a needle rebound protection device for an intravenous infusion device, comprising an infusion tube 1, a connector 2 is fixedly connected to the top of the infusion tube 1, an infusion needle 3 is fixedly connected to the top of the connector 2, and a needle handle 4 is fixedly connected to one side of the connector 2; a rebound component is arranged on the surface of the infusion tube 1, the rebound component comprises a sleeve 5, the sleeve 5 is fixedly connected to one end of the surface of the infusion tube 1, a protective sleeve 6 is slidably connected inside the sleeve 5, the top of the protective sleeve 6 extends to the outside of the sleeve 5, a clamping block 7 is fixedly connected to the top and bottom of one side of the protective sleeve 6, a clamping groove 8 is provided inside the clamping block 7, a placement groove 9 is provided inside the needle handle 4, a first spring 10 is fixedly connected inside the placement groove 9, a sliding plate 11 is fixedly connected to the free end of the first spring 10, an inclined block 12 is fixedly connected to one side of the sliding plate 11, and the free end of the inclined block 12 extends to the inside of the clamping groove 8.

[0026] Specifically: the top and bottom of the sliding plate 11 are slidably connected to the inner wall of the placement groove 9, and can move horizontally smoothly. The inclined block 12 has an inclined surface on one side and a vertical surface on the other side. The purpose of setting the inclined surface is to facilitate the retraction of the protective cover 6 into the sleeve 5. Specific embodiment 2

[0028] See also Figure 1-5On the basis of the specific embodiment 1, a groove 13 is provided on the inner wall of the sleeve 5, a vertical rod 14 is fixedly connected inside the groove 13, a second spring 15 is sleeved on the surface of the vertical rod 14, a limiting block 16 is fixedly connected to the bottom of the surface of the protective sleeve 6, a limiting hole 17 is provided inside the limiting block 16, the diameter of the limiting hole 17 is larger than the diameter of the vertical rod 14, the limiting block 16 is sleeved on the surface of the vertical rod 14, and is fixedly connected to the top of the second spring 15, a protective cap 18 is movably connected to the top of the protective sleeve 6, and the protective cap 18 is made of medical rubber material, a first vertical groove 19 is provided on one side of the sleeve 5, the diameter of the first vertical groove 19 is larger than the diameter of the block 7, a second vertical groove 20 is provided on one side of the protective sleeve 6, the diameter of the second vertical groove 20 is larger than the diameter of the needle handle 4, the number of grooves 13 is four, and the number of limiting blocks 16 is four.

[0029] Specifically: there are four grooves 13 with the same internal structure to ensure the stability of the protective sleeve when it is contracted. The bottom of the second spring 15 is fixedly connected to the bottom of the groove 13, and the top of the second spring 15 is fixedly connected to the bottom of the limit block 16. There are four limit blocks 16 to ensure uniformity when the force is applied. The infusion needle 3 can be protected by the setting of the protective cap 18. The movement of the block 7 can be provided with a movable space by the setting of the first vertical groove 19. The movement of the needle handle 4 can be provided with a movable space by the setting of the second vertical groove 20.

[0030] The working principle of the present invention is as follows: when the infusion needle 3 is used normally, the protective cap 18 is first pulled off, and then the inclined block 12 is pressed into the placement groove 9 by hand, and then the protective cover 6 is pulled downward, so that the block 7 on the top of one side of the protective cover 6 is stuck on the inclined block 12, so that the infusion needle 3 leaks out, and then the infusion needle 3 can be used normally:

[0031] When the infusion is completed and the infusion needle 3 is pulled out, the inclined block 12 is pressed to shrink the inclined block 12 to the inside of the placement groove 9 and break away from the limit of the clamping block 7. Then the second spring 15 rebounds to drive the limit block 16 to move, and the limit block 16 drives the protective cover 6 to move, so that the protective cover 6 is re-covered on the surface of the infusion needle 3 to achieve the purpose of automatic rebound, thereby avoiding the situation where the needle hurts people. The present invention has a simple structure and high practicality and is worthy of promotion.

[0032] The standard parts used in the present invention can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatically controlled by a control unit. The control circuit of the control unit can be realized by simple programming by technicians in this field, which is common knowledge in this field, so the control method and circuit connection are not explained in detail in the present invention.

[0033] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can better understand and utilize the present invention.

Claims

1. A needle rebound protection device for an intravenous infusion set, comprising an infusion tube (1), Features: The top of the infusion tube (1) is fixedly connected to a connector (2), the top of the connector (2) is fixedly connected to an infusion needle (3), and one side of the connector (2) is fixedly connected to a needle handle (4); The surface of the infusion tube (1) is provided with a rebound component, which comprises a sleeve (5), the sleeve (5) is fixedly connected to one end of the surface of the infusion tube (1), a protective sleeve (6) is slidably connected inside the sleeve (5), the top of the protective sleeve (6) extends to the outside of the sleeve (5), a clamping block (7) is fixedly connected to the top and bottom of one side of the protective sleeve (6), a clamping groove (8) is provided inside the clamping block (7), a placement groove (9) is provided inside the needle handle (4), a first spring (10) is fixedly connected inside the placement groove (9), a free end of the first spring (10) is fixedly connected to a sliding plate (11), one side of the sliding plate (11) is fixedly connected to an inclined block (12), and the free end of the inclined block (12) extends to the inside of the clamping groove (8).

2. The intravenous infusion needle rebound protection device according to claim 1, Features: The inner wall of the sleeve (5) is provided with a groove (13), a vertical rod (14) is fixedly connected inside the groove (13), a second spring (15) is sleeved on the surface of the vertical rod (14), a limiting block (16) is fixedly connected to the bottom of the surface of the protective sleeve (6), a limiting hole (17) is provided inside the limiting block (16), the diameter of the limiting hole (17) is larger than the diameter of the vertical rod (14), the limiting block (16) is sleeved on the surface of the vertical rod (14), and is fixedly connected to the top of the second spring (15).

3. The intravenous infusion needle rebound protection device according to claim 1, Features: The top of the protective sleeve (6) is movably connected to a protective cap (18), and the protective cap (18) is made of medical rubber material.

4. The intravenous infusion needle rebound protection device according to claim 1, Features: A first vertical groove (19) is formed on one side of the sleeve (5), and the diameter of the first vertical groove (19) is greater than the diameter of the clamping block (7).

5. The intravenous infusion needle rebound protection device according to claim 1, Features: A second vertical groove (20) is formed on one side of the protective sleeve (6), and the diameter of the second vertical groove (20) is greater than the diameter of the needle handle (4).

6. The intravenous infusion needle rebound protection device according to claim 2, Features: The number of the grooves (13) is four, and the number of the limit blocks (16) is four.

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