Puncture resistant medical catheter

Abstract

The utility model belongs to the technical field of medical catheter, especially, relate to a kind of puncture-proof medical catheter, including catheter main part, catheter main part end and catheter joint fixed connection, catheter joint outside rotationally connected with catheter fixed component, catheter main part is sequentially inside and outside for inner elastic layer, first braided layer, middle elastic layer, second braided layer and outer elastic layer, it is equipped with adhesive layer between adjacent two layers, after catheter main part is inserted into human organ or in blood vessel, catheter joint can be pasted and fixed on skin by catheter fixed component, prevent catheter main part and catheter joint move at will, the inner elastic layer of catheter main part, middle elastic layer and outer elastic layer are TPE material, with the characteristics of high elasticity, high strength, environmental protection and safe non-toxic, first braided layer and second braided layer have puncture-proof function, not easy to be punctured when contacting sharp instrument, improve medical safety.

Description

Technical Field

[0001] This utility model belongs to the field of medical catheter technology, and in particular relates to a puncture-resistant medical catheter. Background Technology

[0002] Currently, most medical catheters are made of relatively simple materials and have few layers, lacking puncture resistance. They are easily punctured when in contact with sharp instruments, which can easily lead to medical accidents.

[0003] For example, patent application number CN202322139765.0, entitled "Medical Catheter," includes: a catheter body, a first electrode, a second electrode, and a fixing structure; the catheter body includes an inner tube and an outer tube, with a spacer cavity between the outer tube and the inner tube for forming a saline delivery channel; the outer tube includes a connecting section at the distal end, with the first electrode and the second electrode sequentially sleeved on the connecting section along the axial direction, the connecting section having multiple through holes penetrating the sidewall, and the saline holes of the first electrode and the second electrode communicating with the spacer cavity through the multiple through holes; the fixing structure is fixed inside the inner tube for at least fixing a pull wire, so that the pull wire can control the bending of the distal end of the catheter body, and does not extend beyond the first electrode and the second electrode in the axial direction of the catheter body. However, the disadvantage of this technical solution is that the medical catheter material and number of layers are relatively simple, and it does not have puncture resistance, making it easy to be punctured when in contact with sharp instruments, which can easily cause medical accidents. Utility Model Content

[0004] The purpose of this utility model is to provide a puncture-resistant medical catheter to solve the problems in the prior art. The specific technical solution is as follows:

[0005] A puncture-resistant medical catheter includes a catheter body, with the end of the catheter body fixedly connected to a catheter connector. A catheter fixing component is rotatably connected to the outside of the catheter connector. The catheter body consists of an inner elastic layer, a first braided layer, a middle elastic layer, a second braided layer, and an outer elastic layer from the inside to the outside. An adhesive layer is provided between adjacent layers.

[0006] Furthermore, the outer side of the catheter connector is provided with multiple protective protrusions.

[0007] Furthermore, the catheter fixation assembly includes two rotating cylinders, cylinder one and cylinder two, both of which rotate on the outside of the catheter connector, with cylinder two located between the two rotating cylinders.

[0008] Furthermore, one end of the rotating drum is fixed to one end of the waterproof adhesive tape, the waterproof adhesive tape is wound around the rotating drum, and the other end of the waterproof adhesive tape is fixedly connected to the tear-off part.

[0009] Furthermore, one end of the rotating drum two is fixed to the waterproof adhesive tape two, the waterproof adhesive tape two is wound around the rotating drum two, and the other end of the waterproof adhesive tape two is fixedly connected to the tear-off part two.

[0010] Furthermore, a limiting rod is fixed to the outside of the conduit connector. The limiting rod has a triangular cross-section. Waterproof adhesive patch one is attached to the limiting rod at the connection point with tear-off part one, and waterproof adhesive patch two is attached to the limiting rod at the connection point with tear-off part two.

[0011] Furthermore, the conduit connector is connected to the heating cover assembly via an elastic rope. The heating cover assembly includes a heating cover body, a central sliding column is slidably connected inside the heating cover body, a button is fixed at the upper end of the central sliding column, a spring is provided between the button and the upper end of the heating cover body, and a check valve is provided at the middle position of the button.

[0012] Furthermore, the central sliding column is provided with a first chamber, and the heating cover body is provided with a third chamber. The first chamber is connected to the third chamber through a through hole provided on the central sliding column.

[0013] Furthermore, a flow channel is provided between the lower end of the heating cover body and the outer wall of the central sliding column, and a base plate is fixed to the lower end of the central sliding column, with the upper surface of the base plate abutting against the sealing gasket provided at the lower end of the heating cover body.

[0014] Furthermore, the central sliding column is provided with a second chamber, and a bottom cover is threadedly connected to the lower end of the central sliding column. A heater is installed inside the bottom cover, and a heating coil on the heater is located inside the second chamber.

[0015] The advantages of this utility model are:

[0016] After the catheter body is inserted into a human organ or blood vessel, the catheter connector can be glued and fixed to the skin using the catheter fixation component to prevent the catheter body and catheter connector from moving at will. The inner elastic layer, middle elastic layer and outer elastic layer of the catheter body are all made of TPE material, which has the characteristics of high elasticity and high strength. It is environmentally friendly, safe and non-toxic. The first braided layer and the second braided layer have puncture-proof function, which makes it less likely to be punctured when in contact with sharp instruments, thus improving medical safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the catheter of this utility model;

[0019] Figure 3 This is a schematic diagram of the catheter fixation assembly structure of this utility model. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the catheter fixation assembly structure of this utility model. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the catheter fixation assembly structure of this utility model. Figure 3 ;

[0022] Figure 6 This is a schematic diagram of the catheter fixation assembly structure of this utility model. Figure 4 ;

[0023] Figure 7 This is a schematic diagram of the catheter fixation assembly structure of this utility model. Figure 5 ;

[0024] Figure 8 This is a schematic diagram of the catheter fixation assembly structure of this utility model. Figure 6 ;

[0025] Figure 9 This is a schematic diagram of the heating cover assembly structure of this utility model. Figure 1 ;

[0026] Figure 10 This is a schematic diagram of the heating cover assembly structure of this utility model. Figure 2 ;

[0027] Explanation of markings in the diagram:

[0028] 1. Inner elastic layer; 2. First braided layer; 3. Middle elastic layer; 4. Second braided layer; 5. Outer elastic layer; 6. Conduit body; 7. Conduit connector; 8. Protective ridge; 9. Rotary drum one; 10. Rotary drum two; 11. Waterproof adhesive tape one; 12. Tear-opening part one; 13. Waterproof adhesive tape two; 14. Tear-opening part two; 15. Limiting rod; 16. Elastic rope; 17. Heating cover body; 18. Button; 19. Check valve; 20. Spring; 21. Central sliding column; 22. Chamber one; 23. Through hole; 24. Chamber two; 25. Heating coil; 26. Heater; 27. Bottom cover; 28. Chamber three; 29. ​​Base plate; 30. Sealing gasket. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Example 1

[0032] like Figure 1-10 As shown, a puncture-resistant medical catheter includes a catheter body 6, with the end of the catheter body 6 fixedly connected to a catheter connector 7. A catheter fixing assembly is rotatably connected to the outside of the catheter connector 7. The catheter body 6 consists of an inner elastic layer 1, a first braided layer 2, a middle elastic layer 3, a second braided layer 4, and an outer elastic layer 5 from the inside out. An adhesive layer is provided between adjacent layers.

[0033] The working principle of the above technical solution is as follows: After the catheter body 6 is inserted into a human organ or blood vessel, the catheter connector 7 can be glued and fixed to the skin through the catheter fixing component to prevent the catheter body 6 and the catheter connector 7 from moving at will. The inner elastic layer 1, the middle elastic layer 3 and the outer elastic layer 5 of the catheter body 6 are all made of TPE material, which has the characteristics of high elasticity and high strength, and is environmentally friendly, safe and non-toxic. The first braided layer 2 and the second braided layer 4 have puncture-proof function, and are not easily punctured when in contact with sharp instruments, thus improving medical safety.

[0034] Example 2

[0035] like Figure 1-10 As shown, the outer side of the conduit connector 7 is provided with multiple protective protrusions 8;

[0036] The working principle of the above technical solution is as follows: When operating the catheter connector 7, multiple protective protrusions 8 play an anti-slip role, which facilitates the rapid movement and turning of the catheter body 6.

[0037] Example 3

[0038] like Figure 1-10 As shown, the catheter fixation assembly includes two rotating cylinders 9 and 10. Both rotating cylinders 9 and 10 rotate outside the catheter connector 7, and rotating cylinder 10 is located between the two rotating cylinders 9.

[0039] The rotating drum 9 is fixed to one end of the waterproof adhesive tape 11, the waterproof adhesive tape 11 is wound around the rotating drum 9, and the other end of the waterproof adhesive tape 11 is fixedly connected to the tear-off part 12.

[0040] The rotating drum 10 is fixed to one end of the waterproof adhesive tape 13, the waterproof adhesive tape 13 is wound around the rotating drum 10, and the other end of the waterproof adhesive tape 13 is fixedly connected to the tear-off part 14.

[0041] The conduit connector 7 is fixed with a limiting rod 15 on the outside. The limiting rod 15 has a triangular cross section. The waterproof adhesive tape 11 and the tear-off part 12 are attached to the limiting rod 15 at the connection point. The waterproof adhesive tape 2 13 and the tear-off part 2 14 are attached to the limiting rod 15 at the connection point.

[0042] The working principle of the above technical solution is as follows: After the catheter body 6 is inserted into a human organ or blood vessel, the catheter connector 7 remains outside the body. At the same time, pulling the tear-opening part 12 and tear-opening part 14 from the outside separates the waterproof adhesive tape 11 and waterproof adhesive tape 2 from the limiting rod 15. Simultaneously, the rotating cylinder 19 and rotating cylinder 210 rotate in opposite directions on the catheter connector 7, continuing to pull the tear-opening part 12 and tear-opening part 214 outward until all the waterproof adhesive tape 11 wrapped around the rotating cylinder 19 is pulled out. Apply waterproof adhesive patch 11 to the skin on the left side of the catheter connector 7. The end of waterproof adhesive patch 11 is fixedly connected to the rotating cylinder 9 and engaged with the limiting rod 15. Pull out all the waterproof adhesive patch 13 wrapped around the rotating cylinder 20 and apply it to the skin on the right side of the catheter connector 7. The end of waterproof adhesive patch 13 is fixedly connected to the rotating cylinder 20 and engaged with the limiting rod 15. This fixes the catheter connector 7 to the skin, making the fixation quick and easy without the need for a separate fixation device.

[0043] Example 4

[0044] like Figure 1-10 As shown, the conduit connector 7 is connected to the heating cover assembly via an elastic rope 16. The heating cover assembly includes a heating cover body 17, a central sliding column 21 is slidably connected inside the heating cover body 17, a button 18 is fixed at the upper end of the central sliding column 21, a spring 20 is provided between the button 18 and the upper end of the heating cover body 17, and a check valve 19 is provided in the middle of the button 18.

[0045] The central sliding column 21 is provided with a first chamber 22, and the heating cover body 17 is provided with a third chamber 28. The first chamber 22 is connected to the third chamber 28 through a through hole 23 provided on the central sliding column 21.

[0046] A flow channel is provided between the lower end of the heating cover body 17 and the outer wall of the central sliding column 21. A base plate 29 is fixed to the lower end of the central sliding column 21, and the upper surface of the base plate 29 abuts against the sealing gasket 30 provided at the lower end of the heating cover body 17.

[0047] The central sliding column 21 is provided with a second chamber 24. The lower end of the central sliding column 21 is threadedly connected to a bottom cover 27. A heater 26 is installed inside the bottom cover 27. The heating coil 25 on the heater 26 is located inside the second chamber 24.

[0048] The working principle of the above technical solution is as follows: A needle can be inserted into the catheter connector 7, and a therapeutic solution can be injected into the human body through the catheter body 6. However, the temperature of the therapeutic solution is often very low, which can cause discomfort to the patient. This solution can heat the therapeutic solution through the heating cap assembly to reduce patient discomfort. Pressing the switch button at the lower end of the heater 26 activates the heater 26 to heat the heating coil 25. Insert the heating cap body 17 into the catheter connector 7, insert the needle through the check valve 19 into the chamber 22, and push the therapeutic solution in. Inside chamber 22, the therapeutic solution enters chamber 28 through the through hole 23. The heating coil 25 heats the therapeutic solution through the thin wall of the central sliding column 21. After heating for a preset time, the button 18 is pressed down, which compresses the spring 20, moves the central sliding column 21 down, and moves the base plate 29 down. The base plate 29 separates from the sealing gasket 30. The therapeutic solution in chamber 28 flows into the catheter body 6 through the channel between the lower end of the heating cover body 17 and the outer wall of the central sliding column 21, and then enters the human body through the catheter body 6.

[0049] Release the pressure on button 18. Under the elastic force of spring 20, button 18, central slide 21 and base plate 29 move upward. Base plate 29 presses against sealing gasket 30 again to close the flow channel. Take out the heating cover assembly. Press the switch button at the bottom of the heater 26 to turn off the heater 26.

[0050] The switch of heater 26 protrudes from the bottom of the bottom cover 27 for easy pressing by the user. An elastic rubber membrane is provided at the bottom of the switch of heater 26. The edge of the elastic rubber membrane is tightly attached to the bottom cover 27. The switch of heater 26 can be pressed through the elastic rubber membrane. The elastic rubber membrane prevents liquids such as therapeutic liquids from contacting heater 26 and causing corrosion or other damage to heater 26.

[0051] The check valve 19 is a circular elastic silicone with a cross-shaped groove in the middle. When the needle is inserted into the circular elastic silicone through the cross-shaped groove, the circular elastic silicone will deform. After the needle is removed, the circular elastic silicone will return to its initial state.

[0052] When heating the medicine is not required, the heating cap body 17 can also be inserted into the catheter connector 7 to prevent dust. The heating cap assembly is integrated with the cap, is compact and does not take up too much space, and makes it convenient and quick to heat the medicine without the need for a separate heating device.

[0053] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A puncture-resistant medical catheter, characterized in that, It includes a catheter body (6), the end of the catheter body (6) is fixedly connected to the catheter connector (7), and a catheter fixing component is rotatably connected to the outside of the catheter connector (7). The catheter body (6) consists of an inner elastic layer (1), a first braided layer (2), a middle elastic layer (3), a second braided layer (4), and an outer elastic layer (5) from the inside to the outside. An adhesive layer is provided between adjacent layers.

2. The puncture-resistant medical catheter according to claim 1, characterized in that, The outer side of the conduit connector (7) is provided with multiple protective protrusions (8).

3. The puncture-resistant medical catheter according to claim 2, characterized in that, The catheter fixing assembly includes two rotating cylinders, one (9) and two rotating cylinders (10), both rotating cylinders (9) and two rotating cylinders (10) are rotated outside the catheter connector (7), and the two rotating cylinders (10) are located between the two rotating cylinders (9).

4. The puncture-resistant medical catheter according to claim 3, characterized in that, The rotating drum (9) is fixed to one end of the waterproof adhesive tape (11), the waterproof adhesive tape (11) is wound around the rotating drum (9), and the other end of the waterproof adhesive tape (11) is fixedly connected to the tear-off part (12).

5. A puncture-resistant medical catheter according to claim 4, characterized in that, The rotating cylinder (10) is fixed to one end of the waterproof adhesive tape (13), the waterproof adhesive tape (13) is wound around the rotating cylinder (10), and the other end of the waterproof adhesive tape (13) is fixedly connected to the tear-off part (14).

6. The puncture-resistant medical catheter according to claim 5, characterized in that, The conduit connector (7) is fixed with a limiting rod (15) on the outside. The limiting rod (15) has a triangular cross section. Waterproof adhesive tape one (11) and tear-off part one (12) are attached to the limiting rod (15) at the connection point. Waterproof adhesive tape two (13) and tear-off part two (14) are attached to the limiting rod (15) at the connection point.

7. The puncture-resistant medical catheter according to claim 1, characterized in that, The conduit connector (7) is connected to the heating cover assembly via an elastic rope (16). The heating cover assembly includes a heating cover body (17), a central sliding column (21) is slidably connected inside the heating cover body (17), a button (18) is fixed at the upper end of the central sliding column (21), a spring (20) is provided between the button (18) and the upper end of the heating cover body (17), and a check valve (19) is provided in the middle of the button (18).

8. A puncture-resistant medical catheter according to claim 7, characterized in that, The central sliding column (21) is provided with a first chamber (22), and the heating cover body (17) is provided with a third chamber (28). The first chamber (22) is connected to the third chamber (28) through a through hole (23) provided on the central sliding column (21).

9. A puncture-resistant medical catheter according to claim 8, characterized in that, A flow channel is provided between the lower end of the heating cover body (17) and the outer wall of the central sliding column (21). A base plate (29) is fixed at the lower end of the central sliding column (21), and the upper surface of the base plate (29) abuts against the sealing gasket (30) provided at the lower end of the heating cover body (17).

10. A puncture-resistant medical catheter according to claim 9, characterized in that, The central sliding column (21) is provided with a second chamber (24). The lower end of the central sliding column (21) is threadedly connected to a bottom cover (27). A heater (26) is installed inside the bottom cover (27). The heating coil (25) on the heater (26) is located inside the second chamber (24).

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