A protective cover for an indwelling needle

Abstract

The present invention relates to the technical field of medical devices and discloses a protective sleeve for an indwelling needle, which comprises an elastic sleeve. The elastic sleeve is provided with a perforation, a safety cylinder, a lid, a ventilation hole, a through cavity, a support plate, a slideway, a second clamping groove, a third clamping groove, a slider, a second clamping protrusion, a third clamping protrusion, a threaded groove, a threaded rod, a lifting rod and a protrusion. The structure of the present invention is simple, the cost is low, and it is convenient to wear. The elastic sleeve is attached to the patient's skin, thus playing a certain fixing effect. The safety cylinder isolates the indwelling needle inside, avoiding direct pulling of the indwelling needle when the patient puts on or takes off clothes, and reducing the probability of the indwelling needle being dislodged from the tube; it is convenient to observe the skin condition at the indwelling needle position at any time through the transparent lid, and it has good air permeability, which can avoid the appearance of imprints or pressure sores that are difficult to eliminate. The provided fixing plate can not only fix the infusion connection cap of the indwelling needle but also facilitate medical staff to turn up the infusion connection cap of the indwelling needle for infusion.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a protective sleeve for an indwelling needle. Background Art

[0002] At present, indwelling needles have been increasingly widely used in clinical treatment. Venous indwelling needles are applied to patients in various clinical departments, such as critically ill patients, surgical patients, and patients who need long-term infusion. The application of venous indwelling needles avoids the pain brought to patients by repeated venous punctures. Especially for elderly patients with poor blood vessels and active children, reducing the number of punctures has a certain effect on protecting the needle opening and blood vessels. At the same time, it also greatly reduces the workload of nurses and speeds up the infusion rate. The indwelling needle includes three parts: an infusion needle, an infusion connection cap, and an extension tube provided between the infusion needle and the infusion connection cap.

[0003] During actual use, since the indwelling needle remains on the hand or arm, it is easy for the patient to pull the indwelling needle tip when putting on or taking off clothes, resulting in a shortened indwelling time of the indwelling needle, thereby increasing the patient's medical expenses, and even possibly directly causing the situation of tube disconnection; the existing protective sleeves for indwelling needles either have poor protective effects, or are too complex in structure and high in cost, and often press on the patient's skin while playing a protective role, causing indentations or even pressure injuries after long-term use. Therefore, the inventor has invented a protective sleeve for an indwelling needle that reduces the probability of tube disconnection of the indwelling needle and does not cause indentations or pressure injuries to the patient. Summary of the Invention

[0004] Based on the above problems, the present invention provides a protective sleeve for an indwelling needle. The structure of the present invention is simple, easy to wear, reduces the probability of the patient pulling the indwelling needle when putting on or taking off clothes, is convenient for observing the skin condition at the indwelling needle site, has good fixing effect, will not cause indentations or pressure injuries due to long-term use, and is convenient for medical staff to re-infuse the patient.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] A protective sleeve for an indwelling needle comprises an elastic sleeve, a perforation is arranged on the top of the elastic sleeve, a safety tube connected to the elastic sleeve is arranged on the perforation, a transparent cover which can be openably connected to the safety tube is arranged on the top of the safety tube, a plurality of air holes penetrating the thickness direction of the cover are arranged on the top of the cover; two through cavities which are arranged in parallel and penetrate the height direction of the safety tube are arranged in any two opposite side walls of the safety tube, a support plate with the same height as the through cavities is arranged in the through cavities, and the inner wall of the through cavities is provided with a through hole along the height direction of the through cavities. A slideway is arranged in the direction, the top wall and bottom wall of the slideway are respectively provided with a second card groove and a third card groove, the side wall of the support plate is provided with a sliding block located in the slideway, the top and bottom of the sliding block are respectively provided with a second card convex engaged with the second card groove and a third card convex engaged with the third card groove; the top of the support plate is provided with a threaded groove, and the safety cylinder is provided with a threaded rod screwed with the thread groove in any one of the threaded grooves of the support plate in the side wall of the through cavity, the top of the threaded rod is provided with a lifting rod which can be inserted into the through cavity, and the top of the lifting rod is provided with an arc-shaped protrusion.

[0007] Furthermore, the safety tube is provided with two shrinkage cavities arranged in a circumferential direction around the elastic sleeve on the elastic sleeve on both sides of the elastic sleeve in the length direction, and holes are provided at both ends of the shrinkage cavity to pass through the outer wall of the elastic sleeve, and a shrinkage strip is provided in the shrinkage cavity, which penetrates the shrinkage cavity and has two holes at both ends respectively passing through the shrinkage cavity, and any one end of the shrinkage strip is fixedly connected to the outer wall of the elastic sleeve, and Velcro 1 is provided on the top surface of the end of the shrinkage strip connected to the elastic sleeve, and the end of the shrinkage strip facing away from Velcro 1 is a free end and is provided with Velcro 2 bonded to Velcro 1.

[0008] Furthermore, a hinge is provided between one end of the cover and the safety cylinder, a connecting piece is provided at the end of the cover away from the hinge, a locking protrusion is provided on a side of the connecting piece facing the safety cylinder, and the safety cylinder is provided with a locking groove engaged with the locking protrusion.

[0009] Furthermore, a fixing plate is provided on the inner wall of the safety cylinder, a rotating rod is provided on the side of the fixing plate opposite to the safety cylinder and is inserted into the inner wall of the safety cylinder and can rotate in the safety cylinder, and a limiting disc with a diameter greater than the diameter of the rotating rod is provided on the end of the rotating rod away from the fixing plate, and the limiting disc can rotate in the inner wall of the safety cylinder.

[0010] Furthermore, a thumb hole is provided on a side wall at one end of the elastic sleeve.

[0011] Furthermore, a skin-friendly cushion is provided at the bottom of the support plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is simple, with low cost and easy to wear. The elastic sleeve is attached to the patient's skin, thus playing a certain fixing effect. The safety cylinder isolates the indwelling needle inside, preventing the indwelling needle from being directly pulled when the patient puts on or takes off clothes, reducing the probability of the indwelling needle being dislodged from the tube. It is convenient to observe the skin condition at the indwelling needle site at any time through the transparent lid. The provided ventilation holes increase the air permeability of the safety cylinder, which can further protect the skin health at the indwelling needle site. The two groups of support plates provided can successively support the safety cylinder, preventing the safety cylinder from pressing on the same position of the skin for a long time, thus avoiding the appearance of indelible imprints or pressure sores. The four provided contraction strips can also successively play a binding role, preventing the same contraction strip from binding to the same part of the skin for a long time and resulting in indelible binding marks or pressure sores. The provided fixing plate can not only fix the infusion connection cap of the indwelling needle but also facilitate medical staff to turn up the infusion connection cap of the indwelling needle for infusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic top view structure diagram of the present invention;

[0014] Figure 2 is the internal structure of the front view of the safety cylinder of the present invention;

[0015] Figure 3 is the internal structure of the through cavity of the present invention;

[0016] Figure 4 is the internal structure of the slideway of the present invention;

[0017] Figure 5 is the structure diagram at the rotating rod of the present invention;

[0018] Figure 6 is the structure diagram of the first clamping protrusion of the present invention;

[0019] Figure 7 is the structure schematic diagram of the existing indwelling needle;

[0020] Wherein: 1. Elastic sleeve; 2. Safety cylinder; 3. Lid; 4. Ventilation hole; 5. Through cavity; 6. Support plate; 7. Slideway; 8. Second clamping groove; 9. Third clamping groove; 10. Slide block; 11. Second clamping protrusion; 12. Third clamping protrusion; 13. Threaded groove; 14. Threaded rod; 15. Lifting rod; 16. Protrusion; 17. Shrinkage cavity; 18. Through hole; 19. Shrinkage strip; 20. First magic tape; 21. Second magic tape; 22. Connecting piece; 23. First clamping protrusion; 24. First clamping groove; 25. Fixing plate; 26. Rotating rod; 27. Limiting circular plate; 28. Thumb perforation; 29. Skin-friendly soft pad; 30. Infusion connection cap. DETAILED DESCRIPTION OF THE INVENTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0022] Example:

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 A protective sleeve for an indwelling needle comprises an elastic sleeve 1, which is made of elastic skin-friendly fabric. Both ends of the elastic sleeve 1 are connected to the outside world, and the patient can directly put the elastic sleeve 1 on the arm; a thumb hole 28 is provided on the side wall of one end of the elastic sleeve 1 of this embodiment. When the indwelling needle is used on the hand, the patient's thumb can be passed through the thumb hole 28, so that the elastic sleeve 1 is more firmly fixed on the hand.

[0024] A perforation is provided on the top of the elastic sleeve 1, and a safety cylinder 2 bonded to the elastic sleeve 1 is provided in the perforation, and the safety cylinder 2 is communicated with the perforation. A cover 3 which is openably connected to the safety cylinder 2 is provided on the top of the safety cylinder 2. The cover 3 is made of transparent material, which is convenient for patients, family members or medical staff to directly observe the skin condition of the patient's indwelling needle. A plurality of air holes 4 penetrating the thickness direction of the cover 3 are provided on the top of the cover 3, which are convenient for the skin at the retained needle to ventilate and keep the skin at the retained needle healthy. A hinge is provided between one end of the cover 3 and the safety cylinder 2 of the present embodiment, and a connecting piece 22 is provided at the end of the cover 3 away from the hinge, and a clamping protrusion 23 is provided on the side of the connecting piece 22 facing the safety cylinder 2. The safety cylinder 2 is provided with a clamping groove 24 which is engaged with the clamping protrusion 23. The cover 3 can be fixed to the top of the safety cylinder 2 by the clamping protrusion 23 and the clamping groove 24. The hinge is convenient for medical staff to open the cover 3 to give the patient another infusion.

[0025] Two parallel through cavities 5 that penetrate the height direction of the safety cylinder 2 are provided in any two opposite side walls of the safety cylinder 2. The height of the through cavity 5 is the same as the height of the safety cylinder 2. The length of the through cavity 5 extends along the length direction of the side wall of the safety cylinder 2 but does not penetrate the safety cylinder 2. A support plate 6 with the same height as the through cavity 5 is provided in the through cavity 5. A slideway 7 is provided on the inner wall of the through cavity 5 along the height direction of the through cavity 5. A second card slot 8 and a third card slot 9 are provided on the top wall and the bottom wall of the slideway 7 respectively. A slider 10 located in the slideway 7 is provided on the side wall of the support plate 6. A second card projection 11 that engages with the second card slot 8 and a third card projection 12 that engages with the third card slot 9 are provided on the top and the bottom of the slider 10 respectively. The support plate 6 can be moved up and down through the slider 10. When the second card slot 8 is engaged with the second card projection 11, the support plate 6 is entirely located within the through cavity 5. When the third card slot 9 is engaged with the third card projection 12, the bottom of the support plate 6 penetrates out of the through cavity 5 to support the safety cylinder 2. A threaded groove 13 is provided on the top of the support plate 6. A threaded rod 14 that is threadedly connected to the threaded groove 13 is provided in the threaded groove 13 of any one of the two support plates 6 in the side wall of the safety cylinder 2 where the through cavity 5 is provided. A lifting rod 15 that can be inserted into the through cavity 5 is provided on the top of the threaded rod 14. An arc-shaped protrusion 16 is provided on the top of the lifting rod 15. The support plate 6 can be lifted through the lifting rod 15. When it is necessary to replace the support plate 6 that supports the safety cylinder 2, the previous support plate 6 that supports the safety cylinder 2 is lifted by the protrusion 16 so that the entire support plate 6 is located within the through cavity 5. Subsequently, the lifting rod 15 is screwed down through the threaded rod 14, and the screwed-down lifting rod 15 is installed on the next support plate 6, and the next support plate 6 is pressed down to continue supporting the safety cylinder 2, thereby achieving the purpose of alternately supporting the safety cylinder 2, avoiding the formation of indelible imprints or pressure sores caused by the long-term contact of the safety cylinder 2 with the same position of the skin, and increasing the comfort of the patient during use. When the support plate 6 is pressed down, the lifting rod 15 is entirely located within the through cavity 5, and only the protrusion 16 is located outside the through cavity 5.

[0026] A skin-friendly soft pad 29 is provided at the bottom of the support plate 6, which can increase the comfort at the contact area between the support plate 6 and the skin, and further reduce the indentation or pressure sores.

[0027] The safety tube 2 is provided with two shrinkage cavities 17 arranged in the circumferential direction of the sleeve on both sides of the sleeve along the length direction of the elastic sleeve 1, and the two ends of the shrinkage cavity 17 are provided with through-holes 18 passing through the outer wall of the elastic sleeve 1, and the shrinkage cavity 17 is provided with a shrinkage strip 19 which penetrates the shrinkage cavity 17 and passes through the two through-holes 18 of the shrinkage cavity 17 at both ends. Any end of the shrinkage strip 19 is connected to the outer wall of the elastic sleeve 1 by sewing, and the top surface of the end of the shrinkage strip 19 connected to the elastic sleeve 1 is provided with a Velcro 20, and the shrinkage strip 19 is provided with a Velcro 20. The end of 19 away from the Velcro 1 20 is a free end and is provided with a Velcro 2 21 bonded to the Velcro 1 20. The elastic sleeve 1 can be further tightened by the contraction strip 19 to better fix the safety tube 2 around the indwelling needle, further preventing the indwelling needle from being pulled when putting on and taking off clothes, and the fixing effect is better. In addition, two contraction strips 19 are respectively arranged on both sides of the safety tube 2, so that the patient can replace the binding position of the contraction strip 19 for convenience, and avoid the same contraction strip 19 being tied to one position for a long time to cause difficult-to-eliminate binding marks or pressure sores.

[0028] A fixing plate 25 is provided on the inner wall of the safety cylinder 2. A rotating rod 26 which is inserted into the inner wall of the safety cylinder 2 and can rotate in the safety cylinder 2 is provided on the side of the fixing plate 25 opposite to the safety cylinder 2. A limiting disc 27 with a diameter larger than that of the rotating rod 26 is provided at the end of the rotating rod 26 away from the fixing plate 25. The limiting disc 27 can rotate in the inner wall of the safety cylinder 2. The infusion connecting cap 30 of the indwelling needle can be pasted on the top of the fixing plate 25. When no infusion is performed, the fixing plate 25 is placed in a horizontal position, which is convenient for closing the cover 3. When infusion is performed, the cover 3 is opened, the fixing plate 25 is rotated, and the fixing plate 25 is tilted, thereby exposing the infusion connecting port of the infusion connecting cap 30 of the indwelling needle, which is convenient for medical personnel to insert an external infusion tube for infusion.

[0029] The use principle of the present invention is as follows: when in use, the patient wears the elastic sleeve 1 on the arm or hand, so that the safety tube 2 safely maintains the indwelling needle in the safety tube 2, and then the infusion connecting cap 30 is adhered to the top of the fixing plate 25 by medical tape. If the patient is a child or an elderly person with poor compliance, the device can be further tightened by the contraction strip 19. When infusion is required, the fixing plate 25 is rotated to expose the infusion connecting cap 30 of the indwelling needle, and the infusion can be performed. After the infusion is completed, the infusion connecting cap 30 is handled so that the fixing plate 25 is in a horizontal position and the cover 3 is covered; during use, the support plate 6 supporting the safety tube 2 or the contraction strip 19 binding the device can be replaced once in a while.

[0030] The above is the embodiment of the present invention. The above embodiments and the specific parameters in the embodiments are only for clearly expressing the invention verification process, and are not used to limit the patent protection scope of the present invention. The patent protection scope of the present invention still takes its claims as the criterion. Any equivalent structural changes made by using the content of the specification and drawings of the present invention should equally be included in the protection scope of the present invention.

Claims

1. A protective cover for an indwelling needle, characterized in that, The invention comprises an elastic sleeve (1), wherein the elastic sleeve (1) is made of elastic skin-friendly fabric, a perforation is provided on the top of the elastic sleeve (1), a safety tube (2) connected to the elastic sleeve (1) is provided on the perforation, a transparent cover (3) openably connected to the safety tube (2) is provided on the top of the safety tube (2), and a plurality of air holes (4) penetrating the thickness direction of the cover (3) are provided on the top of the cover (3); two parallel penetrating cavities (5) penetrating the height direction of the safety tube (2) are provided in any two opposite side walls of the safety tube (2), a support plate (6) having the same height as the penetrating cavity (5) is provided in the penetrating cavity (5), and a slideway (7) provided along the height direction of the penetrating cavity (5) is provided on the inner wall of the penetrating cavity (5) , the top wall and bottom wall of the slideway (7) are respectively provided with a second card groove (8) and a third card groove (9), the side wall of the support plate (6) is provided with a slider (10) located in the slideway (7), the top and bottom of the slider (10) are respectively provided with a second card protrusion (11) engaged with the second card groove (8) and a third card protrusion (12) engaged with the third card groove (9); the top of the support plate (6) is provided with a threaded groove (13), and the threaded groove (13) of any one of the support plates (6) in the side wall of the safety cylinder (2) is provided with a through cavity (5) is provided with a threaded rod (14) threadedly connected with the threaded groove (13), the top of the threaded rod (14) is provided with a lifting rod (15) that can be inserted into the through cavity (5), and the top of the lifting rod (15) is provided with an arc-shaped protrusion (16); The safety tube (2) is provided with two shrinkage cavities (17) arranged in the circumferential direction of the elastic sleeve (1) on the elastic sleeve (1) on both sides of the elastic sleeve (1) along the length direction of the elastic sleeve (1); both ends of the shrinkage cavity (17) are provided with through-holes (18) passing through the outer wall of the elastic sleeve (1); a shrinkage strip (19) is provided in the shrinkage cavity (17) and the two ends of the shrinkage strip (19) pass through the two through-holes (18) of the shrinkage cavity (17) respectively; any one end of the shrinkage strip (19) is fixedly connected to the outer wall of the elastic sleeve (1); a Velcro 1 (20) is provided on the top surface of the end of the shrinkage strip (19) connected to the elastic sleeve (1); the end of the shrinkage strip (19) away from the Velcro 1 (20) is a free end and is provided with a Velcro 2 (21) bonded to the Velcro 1 (20).

2. The indwelling needle protective cover according to claim 1, characterized in that, A hinge is provided between one end of the cover (3) and the safety cylinder (2); a connecting piece (22) is provided at the end of the cover (3) away from the hinge; a locking protrusion (23) is provided on a side of the connecting piece (22) facing the safety cylinder (2); and a locking groove (24) is provided on the safety cylinder (2) for locking with the locking protrusion (23).

3. The indwelling needle protective cover according to claim 1, wherein, The inner wall of the safety cylinder (2) is provided with a fixing plate (25); a rotating rod (26) inserted into the inner wall of the safety cylinder (2) and rotatable in the safety cylinder (2) is provided on a side of the fixing plate (25) opposite to the safety cylinder (2); a limiting disc (27) having a diameter greater than that of the rotating rod (26) is provided at an end of the rotating rod (26) away from the fixing plate (25); and the limiting disc (27) is rotatable in the inner wall of the safety cylinder (2).

4. A protective sleeve for an indwelling needle according to claim 1, characterized in that, A thumb hole (28) is provided on the side wall of one end of the elastic sleeve (1).

5. The indwelling needle protective sleeve according to claim 1, wherein A skin-friendly soft pad (29) is provided at the bottom of the support plate (6).

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