Negative pressure drainage device

Abstract

The utility model discloses a negative pressure drainage device, which belongs to the technical field of drainage devices and comprises a guide needle. The front end outer wall of the first main body of the guide needle is designed with anti-slip patterns. The tail end of the guide needle is connected to the input end of a negative pressure ball through a first drainage tube. The first drainage port arranged at the tail of the negative pressure ball is connected to an inner plum blossom-shaped second drainage tube through a connecting tube. The output end of the inner plum blossom-shaped second drainage tube is connected to the input end of a liquid storage bag through a second one-way valve to form a drainage state. A mesh is installed inside the second one-way valve. The mesh sealing strip presses and seals the second one-way valve sleeved on the top of the inner cavity of the liquid storage bag to fit. A second drainage port is sleeved on the bottom of the inner cavity of the liquid storage bag and is sealed and pressed by the mesh sealing strip. A double-wing valve is installed on the side wall of the second drainage port to facilitate doctors to hold the puncture tightly. The device is suitable for punctures at various angles. The puncture wound is small, and drainage is convenient and not blocked, thereby reducing the difficulty of doctors' work.

Description

Technical Field

[0001] The utility model relates to a photographing device, in particular to a negative pressure drainage device, and belongs to the technical field of photographing devices. Background Art

[0002] There are many cases of first drainage tubes used clinically. They are mainly used to guide pus, blood and fluid accumulated between human tissues or in body cavities to the outside of the body to prevent postoperative infection or affect wound healing. The first drainage tube needs to be kept unobstructed during use and cannot be squeezed, twisted or compressed to avoid affecting drainage. It is also necessary to avoid backflow during drainage or loosening or even breaking of the first drainage tube, which may cause infection and secondary surgery. The existing first drainage pipeline is usually connected to the first drainage tube by a negative pressure ball and connected to the drainage bag through a connecting tube, and the accumulated fluid is sucked into the drainage bag by negative pressure.

[0003] The utility model with application number 00210744.9 in the prior art discloses a body cavity fluid drainage device, which is composed of a bevel puncture needle with a scale, a first drainage tube sleeved therein, and a drainage bag connected to the first drainage tube. It is characterized in that a first drainage tube joint is provided in the middle of the first drainage tube, and the first drainage tube is divided into an upper first drainage tube and a lower first drainage tube, a scale is provided on the upper drainage, a reducer with a piston is connected to the tail of the upper first drainage tube, and a Murphy's pot and a flow rate controller are provided on the lower first drainage tube. The utility model can integrate puncture, drainage, medication and irrigation, and can also accurately observe and control the drainage speed at any time to relieve the patient's pain.

[0004] Similar to the above application, there are still some shortcomings:

[0005] The surface of the puncture needle is smooth, especially when it is stained with body fluids, it is easy to slip during use, causing harm to medical staff. The puncture needle has a fixed angle and the puncture wound is large. The drainage device is affected by the product's own structure and process. The product's transition section and connection are prone to blockage, and the bending of the pipeline leads to poor drainage, which increases the difficulty of the doctor's work.

[0006] Therefore, a negative pressure drainage device is designed to optimize the above problems. Utility Model Content

[0007] The main purpose of the utility model is to provide a negative pressure drainage device, comprising a guide needle.

[0008] The front end outer wall of the first main body of the guide needle is provided with anti-slip grooves;

[0009] The tail end of the guide needle is connected to the first one-way valve connected to the input end of the top of the negative pressure ball through the first drainage tube, and the first drainage port is arranged at the tail of the negative pressure ball. The first drainage port is connected to the second inner plum blossom-shaped drainage tube through a connecting tube, and the output end of the second inner plum blossom-shaped drainage tube is connected to the input end of the liquid storage bag through the second one-way valve with a mesh installed inside, forming a drainage state.

[0010] Preferably, the guide needle is composed of a first body, a diameter-reducing portion, a second body, a puncture portion, a cutting edge and anti-slip patterns;

[0011] The first body is connected to the second body through a diameter reducing portion, the cross section of the diameter reducing portion is smaller than the cross sections of the first body and the second body, and the diameter reducing portion forms an angle between the first body and the second body in the guide needle;

[0012] The puncture portion is arranged at the top end of the second body, and the bottom end of the puncture portion narrows toward the tip in a direction away from the second body to form a smooth cone;

[0013] The side wall of the puncture portion is provided with a cutting edge, which is formed at the tip of the puncture portion. The cutting edge has a smooth plane, and the plane of the cutting edge is tangent to the conical surface of the puncture portion.

[0014] Preferably, a first sliding clamp is sleeved on the outer wall of the first drainage tube.

[0015] Preferably, a second sliding clamp is sleeved on the outer wall of the first liquid discharge port connected to the tail end of the negative pressure ball.

[0016] Preferably, the connecting pipe connected to the first liquid discharge port arranged at the tail of the negative pressure ball is composed of an internal threaded pipe and an external threaded pipe, the internal threaded pipe is sleeved on the outer wall of the external threaded pipe and tightened and closed, and the outer wall of the output end at the bottom of the external threaded pipe is sleeved with an internal plum blossom-shaped second drainage pipe;

[0017] The output end of the inner plum blossom-shaped second drainage tube is sleeved on the input end of the second one-way valve.

[0018] Preferably, the mesh sealing strip compresses and seals the second one-way valve sleeved on the top of the inner cavity of the liquid storage bag to fit tightly.

[0019] Preferably, a second liquid discharge port is sleeved at the bottom of the inner cavity of the liquid storage bag, which is sealed by a mesh sealing strip, and a double-wing valve is installed on the side wall of the second liquid discharge port.

[0020] The beneficial technical effect of the utility model is as follows: the first body and the second body of the guide needle are connected by the reducing part. Since the cross-section of the reducing part is smaller than that of the first body and the second body, the reducing part is easily deformed by force, causing the bending change of the reducing part, resulting in the change of the overall extension shape of the guide needle, and it is easier to perform secondary shaping on the guide needle, so that it is suitable for various different usage situations. The front end outer wall of the first body of the guide needle is designed with anti-slip patterns, which is convenient for doctors to hold tightly for puncture and prevent slipping, thereby protecting doctors and patients. The cutting edge arranged on the side wall of the puncture part is formed at the tip of the puncture part. In the process of using the guide needle to puncture the human body, the puncture force can be significantly reduced to avoid accidental injuries caused by excessive force. The cutting edge has a smooth plane, and the plane of the cutting edge is tangent to the conical surface of the puncture part. The smooth plane can reduce the resistance during puncture entry, ensuring that no sharp edge is generated at the junction of the cutting edge and the puncture part. The edge will not increase the harm to the patient. The first one-way valve inside the negative pressure ball adopts a special process to avoid the first one-way valve sticking and losing its effectiveness during the validity period after the product is stored for a long time. The size of the sliding clamp set on the outer wall of the first drainage tube and the outer wall of the first liquid discharge tube at the tail of the negative pressure ball is increased. The large sliding clamp design makes the product more convenient to use and reduces the burden on medical staff. The first drainage tube is integrally formed, and the cross groove is cancelled and directly switched to the transition end at the circular inner cavity to ensure its tensile strength while reducing the probability of blockage. The inner plum blossom-shaped second drainage tube connected to the input end of the liquid storage bag adopts a plum blossom hollow design to avoid affecting the drainage effect when the tube is bent. The mesh installed inside the second one-way valve connected to the top of the inner cavity of the liquid storage bag ensures that the drainage bag will not be blocked. The double-wing valve set at the second liquid discharge port at the tail of the liquid storage bag can discharge the liquid in time, and the drainage is smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a schematic diagram of the overall structure of a negative pressure drainage device according to a preferred embodiment of the present utility model.

[0022] Figure 2 The figure is a schematic diagram of the side structure of a guide needle of a negative pressure drainage device according to a preferred embodiment of the present utility model.

[0023] Figure 3 The figure is a schematic diagram of the bottom surface structure of a device guide needle according to a preferred embodiment of a negative pressure drainage device of the utility model.

[0024] Figure 4 The figure is a schematic structural diagram of the inner diameter reducing portion of a device guide needle according to a preferred embodiment of a negative pressure drainage device of the utility model.

[0025] Figure 5 The figure is a schematic diagram of the structure of the puncture part inside the guide needle of a negative pressure drainage device according to a preferred embodiment of the present utility model.

[0026] Figure 6 The present invention is a schematic structural diagram of a plum blossom-shaped second drainage tube connection assembly in a negative pressure drainage device according to a preferred embodiment of the present invention.

[0027] In the figure: 1. guide needle; 101. first main body; 102. reducing part; 103. second main body; 104. puncture part; 105. cutting edge; 106. anti-slip pattern; 2. first drainage tube; 3. first sliding clamp; 4. first one-way valve; 5. negative pressure ball; 6. second sliding clamp; 7. first drainage port; 8. connecting tube; 801. internal threaded tube; 802. external threaded tube; 9. inner plum blossom-shaped second drainage tube; 10. second one-way valve; 1001. mesh; 11. mesh sealing strip; 12. liquid storage bag; 13. second drainage port; 14. double-wing valve. DETAILED DESCRIPTION

[0028] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0029] like Figure 1-5 As shown, the first body 101 and the second body 103 of the guide needle 1 are connected by the reducing portion 102 in the guide needle 1. Since the cross-section of the reducing portion 102 is smaller than that of the first body 101 and the second body 103, the reducing portion 102 is easily deformed by force, causing the bending change of the reducing portion 102, resulting in the change of the overall extended shape of the guide needle 1, making it easier to perform secondary shaping on the guide needle 1, so as to be suitable for various usage conditions;

[0030] The front end outer wall of the first body 101 of the guide needle 1 is designed with anti-slip grooves 106, which is convenient for doctors to hold the puncture tightly and prevent the guide needle 1 from slipping in their hands, thus protecting doctors and patients;

[0031] The cutting edge 105 arranged on the side wall of the puncture portion 104 connected to the top of the second main body 103 is formed at the tip of the puncture portion 104. During the process of puncturing the human body with the guide needle 1, the puncture force can be significantly reduced to avoid accidental injury caused by excessive force. The cutting edge 105 has a smooth plane, and the plane of the cutting edge 105 is tangent to the conical surface of the puncture portion 104. The smooth plane can minimize the resistance of the puncture portion 104 when puncturing the skin, ensuring that no sharp edge is generated at the junction of the cutting edge 105 and the puncture portion 104, thereby not increasing the harm to the patient.

[0032] like Figure 1-5As shown, the tail end of the guide needle 1 is connected to the first one-way valve 4 connected to the input end of the negative pressure ball 5 through the first drainage tube 2. The first drainage tube 2 is integrally formed to ensure its tensile strength and reduce the probability of clogging. The first one-way valve 4 adopts a special process to avoid the first one-way valve 4 from sticking and losing its effectiveness after the product is stored for a long time within the validity period;

[0033] The first sliding clamp 3 sleeved on the outer wall of the first drainage tube 2 and the second sliding clamp 6 sleeved on the outer wall of the first drainage port 7 arranged at the tail end of the negative pressure ball 5 are both large-sized sliding clamps. The large sliding clamp design is more convenient during use and reduces the burden on medical staff.

[0034] like Figure 1-6 As shown, the connecting tube 8 sleeved on the outer wall of the first drainage port 7 arranged at the tail of the negative pressure ball 5 is composed of an internal threaded tube 801 and an external threaded tube 802. The internal threaded tube 801 is sleeved on the outside of the external threaded tube 802 and tightened, so that the inner plum blossom-shaped second drainage tube 9 sleeved on the outer wall of the bottom of the external threaded tube 802 forms a closed state with the negative pressure ball 5, and the inner plum blossom-shaped second drainage tube 9 has a strong supporting force to avoid affecting the drainage effect when the tube is bent.

[0035] like Figure 1-6 As shown, a mesh sealing strip 11 is used to seal the second one-way valve 10 mounted on the top of the inner cavity of the liquid storage bag 12 and the second drainage port 13 mounted on the bottom of the inner cavity of the liquid storage bag 12. The mesh 1001 installed inside the second one-way valve 10 connected to the top of the inner cavity of the liquid storage bag 12 ensures that the liquid inlet of the drainage bag will not be blocked. The double-wing valve 14 arranged at the second drainage port 13 at the tail of the liquid storage bag 12 can discharge the liquid in time, and the drainage is smoother.

[0036] The above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A negative pressure drainage device, comprising a guide needle (1), characterized in that: The front end outer wall of the first body (101) of the guide needle (1) is provided with anti-slip grooves (106); The tail end of the guide needle (1) is connected to the first one-way valve (4) connected to the top input end of the negative pressure ball (5) through the first drainage tube (2), and the first drainage port (7) is arranged at the tail of the negative pressure ball (5). The first drainage port (7) is connected to the inner plum blossom-shaped second drainage tube (9) through the connecting tube (8), and the output end of the inner plum blossom-shaped second drainage tube (9) is connected to the input end of the liquid storage bag (12) through the second one-way valve (10) with the mesh (1001) installed inside, thereby forming a drainage state.

2. A negative pressure drainage device according to claim 1, characterized in that: The guide needle (1) is composed of a first body (101), a diameter-reducing portion (102), a second body (103), a puncture portion (104), a cutting edge (105) and anti-slip grooves (106); The first body (101) is connected to the second body (103) via a reducing portion (102); the cross section of the reducing portion (102) is smaller than the cross sections of the first body (101) and the second body (103); the reducing portion (102) forms an angle between the first body (101) and the second body (103) in the guide needle (1); The puncture portion (104) is arranged at the top end of the second body (103), and the bottom end of the puncture portion (104) narrows toward the tip in a direction away from the second body (103) to form a smooth cone; The side wall of the puncture portion (104) is provided with a cutting edge (105), which is formed at the tip of the puncture portion (104). The cutting edge (105) has a smooth plane, and the plane of the cutting edge (105) is tangent to the conical surface of the puncture portion (104).

3. A negative pressure drainage device according to claim 1, characterized in that: The outer wall of the first drainage tube (2) is sleeved with a first sliding clamp (3).

4. A negative pressure drainage device according to claim 1, characterized in that: A second sliding clamp (6) is sleeved on the outer wall of the first liquid discharge port (7) connected to the tail end of the negative pressure ball (5).

5. A negative pressure drainage device according to claim 1, characterized in that: The connecting pipe (8) connected to the first liquid discharge port (7) provided at the tail of the negative pressure ball (5) is composed of an internally threaded pipe (801) and an externally threaded pipe (802), the internally threaded pipe (801) is sleeved on the outer wall of the externally threaded pipe (802) and is screwed and sealed, and the outer wall of the bottom output end of the externally threaded pipe (802) is sleeved with an internal plum blossom-shaped second drainage pipe (9); The output end of the inner plum blossom-shaped second drainage tube (9) is sleeved on the input end of the second one-way valve (10).

6. A negative pressure drainage device according to claim 1, characterized in that: The mesh sealing strip (11) compresses and seals the second one-way valve (10) sleeved on the top of the inner cavity of the liquid storage bag (12) to fit tightly.

7. A negative pressure drainage device according to claim 1, characterized in that: The bottom of the inner cavity of the liquid storage bag (12) is sleeved with a second liquid discharge port (13), which is sealed by a mesh sealing strip (11), and a double-wing valve (14) is installed on the side wall of the second liquid discharge port (13).

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