Anti-exosmosis remaining needle protection mechanism
By using a sealing gasket and a return spring in the indwelling needle protection mechanism, the problem of blood extravasation when the indwelling needle is taken out is solved. The cooperation of the magnet and the extrusion block prevents the backflow of the medicinal solution and improves the safety of the infusion process. .
Patent Information
- Application Number
- CN202420850474.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-04-23
AI Technical Summary
When the existing indwelling needle is removed, it is easy to cause blood extravasation, increasing the risk of infection for medical staff. At the same time, the medicine liquid may flow back during the infusion process, reducing the safety of infusion.
Design a kind of anti -exquisite -proof needle protection agency. By setting a sealing cushion and reset spring on the infusion pipe to ensure that the blood is squeezed into the anti -seepage cavity when the hard needle is removed, and the coordination of the magnet and the squeezing block is coordinated by the magnet and the squeezing block. , Prevent the flow of medicinal solution.
It effectively prevents blood extravasation, reduces the risk of infection for medical staff, prevents the backflow of medicinal liquid, and improves the safety of the infusion process.
Smart Images
Figure CN222383915U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of indwelling needles, in particular to an indwelling needle protection mechanism for preventing extravasation. Background Art
[0002] Indwelling catheters can reduce the pain and fear of injections caused by repeated venous punctures in children, relieve parents' anxiety, facilitate clinical medication, rescue medication for emergency and critically ill patients, reduce the workload of nurses, and reduce the pain of children. Therefore, intravenous catheters are widely used in clinical practice.
[0003] When the existing indwelling needle is in use, blood will usually extravasate through the indwelling needle when the hard needle in the inner cavity of the indwelling needle is removed, so that medical staff may be infected when they come into contact with the extravasated blood, thereby reducing the safety of the medical staff. At the same time, when the patient is receiving an infusion, the patient's attention is usually not focused, which may cause the drug solution to flow back through the infusion tube, thereby reducing the safety of the infusion personnel. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides an anti-extravasation indwelling needle protection mechanism, which has the advantages of anti-seepage and anti-backflow, and solves the problems raised by the above-mentioned background technology.
[0005] The utility model provides the following technical solutions: an anti-extravasation indwelling needle protection mechanism comprises an infusion tube, the outer wall of the infusion tube is provided with a push tube body, a hard needle body is fixedly installed on the top of the push tube body, the outer wall of the infusion tube is provided with an extrusion cylinder, a slide groove is opened on the outer wall of the extrusion cylinder, an extrusion block is provided in the inner cavity of the extrusion cylinder, a magnet is inlaid on the top of the extrusion block, a button is slidably sleeved on the outer wall of the extrusion cylinder, a magnet is inlaid on the top of the inner wall of the button, an indwelling needle body is provided on the top outer wall of the push tube body, and a soft needle body is fixedly installed on the top of the indwelling needle body.
[0006] As a preferred technical solution of the utility model, a cylinder is fixedly installed inside the indwelling needle body, a sliding groove 2 is opened on the inner wall of the cylinder, a sealing gasket 1 is fixedly installed on the bottom of the cylinder, a sealing gasket 2 is slidably sleeved on the top of the cylinder, a sliding block is fixedly installed on the bottom of the outer wall of the sealing gasket 2, a reset spring is provided on the inner cavity of the cylinder, and an anti-seepage cavity is provided on the outer wall of the cylinder.
[0007] As a preferred technical solution of the utility model, the unembedded side of the magnet one and the magnet two are respectively S poles, and the unembedded side of the magnet one and the magnet two are like poles that repel each other.
[0008] As a preferred technical solution of the utility model, the button is fitted with the inner wall of the slide groove one, and the button and the slide groove one are slidably sleeved. The button is fitted with the inner wall of the slide groove one, and the button and the slide groove one are slidably sleeved.
[0009] As a preferred technical solution of the present invention, the hard needle body and the soft needle body have the same shape, and the hard needle body is respectively penetrated by the sealing gasket 1 and the sealing gasket 2.
[0010] As a preferred technical solution of the utility model, the outer wall of the sliding block is fitted with the inner wall of the second sliding groove, and the sliding block is slidably sleeved with the second sliding groove.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. The anti-extravasation protection mechanism for the indwelling needle has a design for the sealing pad 1 and the sealing pad 2. When the hard needle body is taken out, the outer wall of the hard needle body will generate friction with the inner walls of the sealing pad 1 and the sealing pad 2, so that the hard needle body will drive the sealing pad 2 to slide along the direction of the slide groove 2 through the slider, so that the reset spring of the sealing pad 2 will be compressed when the sliding is performed, so that when the hard needle body is taken out of the inner cavity of the indwelling needle body, the sealing pad 2 will be reset under the rebound of the reset spring, so that the blood that has extravasated through the soft needle body will be squeezed by the reset sealing pad 2 to flow into the anti-seepage cavity, thereby making it safer for medical staff to operate.
[0013] 2. The anti-extravasation indwelling needle protection mechanism, through the design of magnet one and magnet two, makes the bottom inner wall of the button slide along the inner wall direction of the slide groove one through the button, and then makes the S pole of the unembedded side of magnet two approach the S pole of the unembedded side of magnet one under the sliding of the button, so that the unembedded sides of magnet one and magnet two will generate like-sex repulsive magnetic fields when approaching, so that magnet one will drive the extrusion block to approach the outer wall of the infusion tube, thereby realizing the isolation of the liquid refluxed in the inner cavity of the infusion tube, and better ensuring the safety of the infusion personnel. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;
[0016] Figure 3 This is a schematic diagram of the main structure of the hard needle of the utility model;
[0017] Figure 4 This is a schematic diagram of the backflow prevention structure of the utility model;
[0018] Figure 5This is a schematic diagram of the anti-seepage structure of the utility model;
[0019] Figure 6 For this utility model Figure 2 Enlarged structural diagram at A in the middle.
[0020] In the figure: 1. infusion tube; 2. push tube body; 3. hard needle body; 4. extrusion cylinder; 5. slide groove 1; 6. extrusion block; 7. magnet 1; 8. button; 9. magnet 2; 10. indwelling needle body; 11. soft needle body; 12. cylinder; 13. slide groove 2; 14. sealing gasket 1; 15. sealing gasket 2; 16. slider; 17. reset spring; 18. anti-seepage cavity. DETAILED DESCRIPTION
[0021] 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.
[0022] See also Figure 1-6 , an anti-extravasation indwelling needle protection mechanism, comprising an infusion tube 1, a push tube body 2 is provided on the outer wall of the infusion tube 1, a hard needle body 3 is fixedly installed on the top of the push tube body 2, an extrusion cylinder 4 is provided on the outer wall of the infusion tube 1, a slide groove 5 is opened on the outer wall of the extrusion cylinder 4, an extrusion block 6 is provided in the inner cavity of the extrusion cylinder 4, a magnet 7 is embedded on the top of the extrusion block 6, a button 8 is slidably sleeved on the outer wall of the extrusion cylinder 4, a magnet 9 is embedded on the top of the inner wall of the button 8, an indwelling needle body 10 is provided on the top outer wall of the push tube body 2, and a soft needle body 11 is fixedly installed on the top of the indwelling needle body 10;
[0023] In the above structure, by setting the extrusion cylinder 4, by pressing the button 8, the magnet 1 7 and the magnet 2 9 are matched, so that the extrusion block 6 moves along the inner wall of the extrusion cylinder 4 to the outer wall of the infusion tube 1, thereby squeezing the infusion tube 1 to prevent the liquid inside the infusion tube 1 from flowing back, and prevent people's blood from flowing back into the infusion tube 1, thereby ensuring the normal liquid exchange and ensuring the safety of people's infusion.
[0024] In a preferred embodiment, a cylinder 12 is fixedly installed inside the indwelling needle body 10, a slide groove 13 is opened on the inner wall of the cylinder 12, a sealing gasket 14 is fixedly installed at the bottom of the cylinder 12, a sealing gasket 15 is slidably sleeved on the top of the cylinder 12, a slider 16 is fixedly installed at the bottom of the outer wall of the sealing gasket 15, a return spring 17 is provided at the inner cavity of the cylinder 12, and an anti-seepage cavity 18 is provided on the outer wall of the cylinder 12;
[0025] In the above structure, by setting the anti-seepage cavity 18, when the hard needle body 3 enters the corresponding position of the human body, it then pushes the indwelling needle body 10, so that the indwelling needle body 10 will drive the position of the soft needle body 11 to enter the body, so that when the hard needle body 3 is taken out, the anti-seepage cavity 18 and the sealing gasket 15 cooperate to make the seeped blood enter the anti-seepage cavity 18, thereby avoiding blood splashing onto the body surface of medical staff and causing infection of medical staff.
[0026] In a preferred embodiment, the unmounted side of magnet 1 7 and magnet 2 9 are respectively S poles, and the unmounted side of magnet 1 7 and magnet 2 9 are like poles and repel each other;
[0027] In the above structure, by setting magnet 1 7 and magnet 2 9, the S pole of the unembedded side of magnet 2 9 will approach the S pole of the unembedded side of magnet 1 7 under the sliding of button 8, so that magnet 1 7 and the unembedded side of magnet 2 9 will generate like-charged magnetic fields that repel each other when they approach each other, so that magnet 1 7 will drive the extrusion block 6 to approach the outer wall of the infusion tube 1, thereby isolating the liquid refluxed in the inner cavity of the infusion tube 1, and better ensuring the safety of the infusion personnel.
[0028] In a preferred embodiment, the button 8 is fitted with the inner wall of the slide groove 1 5 , and the button 8 is slidably sleeved with the slide groove 1 5 ;
[0029] In the above structure, by setting the button 8, the bottom inner wall of the button 8 can slide along the inner wall direction of the slide groove 1 5.
[0030] In a preferred embodiment, the hard needle body 3 and the soft needle body 11 have the same shape, and the hard needle body 3 is respectively connected to the sealing gasket 1 14 and the sealing gasket 2 15 to form a through arrangement;
[0031] In the above structure, by setting the sealing gasket 14 and the sealing gasket 2 15, when the soft needle body 11 is pushed to the position reserved in the human body by the hard needle body 3, the outer wall of the hard needle body 3 will generate friction with the inner walls of the sealing gasket 14 and the sealing gasket 2 15 by taking out the hard needle body 3.
[0032] In a preferred embodiment, the outer wall of the slider 16 fits with the inner wall of the second slide groove 13, and the slider 16 and the second slide groove 13 are slidably connected;
[0033] In the above structure, by setting the slider 16, when the hard needle body 3 is taken out, the hard needle body 3 will drive the sealing gasket 2 15 to slide along the direction of the slide groove 2 13 through the slider 16, so that the reset spring 17 of the sealing gasket 2 15 will be compressed when sliding, so that when the hard needle body 3 is taken out of the inner cavity of the indwelling needle body 10, the sealing gasket 2 15 will be reset under the rebound of the reset spring 17, so that the blood that has seeped through the soft needle body 11 will be squeezed by the reset sealing gasket 2 15 to flow into the anti-seepage cavity 18, so that medical staff can operate more safely.
[0034] Working principle: when the device is in use, the push tube body 2 is pushed so that the push tube body 2 drives the hard needle body 3 to enter the body. When the hard needle body 3 reaches the corresponding position, the indwelling needle body 10 is pushed so that the soft needle body 11 is pushed to the position reserved by the hard needle body 3 in the human body. Then the push tube body 2 is taken out backwards, so that the push tube body 2 drives the hard needle body 3 to produce friction and slide with the inner walls of the sealing gasket 1 14 and the sealing gasket 2 15, so that the hard needle body 3 drives the sealing gasket 2 15 to slide along the direction of the slide groove 2 13 through the slider 16, so that the reset spring 17 of the sealing gasket 2 15 is compressed when sliding, so that when the hard needle body 3 is taken out of the inner cavity of the indwelling needle body 10, the sealing gasket 2 15 is rebounded by the reset spring 17. The soft needle body 11 is reset, so that the blood that has seeped out through the soft needle body 11 will be squeezed by the reset sealing pad 2 15 and flow into the anti-seepage cavity 18, thereby avoiding blood splashing onto the body surface of medical staff and causing infection of medical staff. At the same time, through the button 8, the bottom inner wall of the button 8 will slide along the inner wall direction of the slide groove 5, and then the S pole of the unembedded side of the magnet 2 9 will approach the S pole of the unembedded side of the magnet 7 under the sliding of the button 8, so that the magnet 1 7 and the unembedded side of the magnet 2 9 will generate like-sex repelling magnetic fields when they are close, so that the magnet 1 7 will drive the extrusion block 6 to approach the outer wall of the infusion tube 1, thereby realizing the isolation of the liquid refluxed in the inner cavity of the infusion tube 1, and better ensuring the safety of the infusion personnel.
[0035] 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. An anti-extravasation indwelling needle protection mechanism, comprising an infusion tube (1), characterized in that: The outer wall of the infusion tube (1) is provided with a push tube body (2), and a hard needle body (3) is fixedly installed on the top of the push tube body (2). The outer wall of the infusion tube (1) is provided with an extrusion cylinder (4), and a slide groove (5) is opened on the outer wall of the extrusion cylinder (4). The inner cavity of the extrusion cylinder (4) is provided with an extrusion block (6), and a magnet (7) is embedded on the top of the extrusion block (6). The outer wall of the extrusion cylinder (4) is slidably sleeved with a button (8), and the top of the inner wall of the button (8) is embedded with a magnet (9). The top outer wall of the push tube body (2) is provided with an indwelling needle body (10), and a soft needle body (11) is fixedly installed on the top of the indwelling needle body (10).
2. The anti-extravasation indwelling needle protection mechanism according to claim 1, characterized in that: A cylinder (12) is fixedly installed inside the indwelling needle body (10), a second slide groove (13) is opened on the inner wall of the cylinder (12), a first sealing gasket (14) is fixedly installed on the bottom of the cylinder (12), a second sealing gasket (15) is slidably sleeved on the top of the cylinder (12), a slider (16) is fixedly installed on the bottom of the outer wall of the second sealing gasket (15), a reset spring (17) is provided in the inner cavity of the cylinder (12), and an anti-seepage cavity (18) is provided on the outer wall of the cylinder (12).
3. The anti-extravasation indwelling needle protection mechanism according to claim 1, characterized in that: The unembedded sides of the magnet one (7) and the magnet two (9) are respectively S poles, and the unembedded sides of the magnet one (7) and the magnet two (9) are in a like-pole repulsion relationship.
4. The anti-extravasation indwelling needle protection mechanism according to claim 1, characterized in that: The button (8) fits the inner wall of the slide groove (5), and the button (8) and the slide groove (5) are slidably sleeved.
5. The anti-extravasation indwelling needle protection mechanism according to claim 1, characterized in that: The hard needle body (3) has the same shape as the soft needle body (11), and the hard needle body (3) is respectively connected to the sealing gasket 1 (14) and the sealing gasket 2 (15) to form a through-arrangement.
6. The anti-extravasation indwelling needle protection mechanism according to claim 2, characterized in that: The outer wall of the sliding block (16) fits with the inner wall of the second sliding groove (13), and the sliding block (16) and the second sliding groove (13) are slidably sleeved.