Anti-pinch backflushing drainage tube

Abstract

The utility model provides an anti-pinch back-flushing drainage tube, and belongs to the technical field of lumbar cistern drainage, the anti-pinch back-flushing drainage tube comprises a drainage catheter, the drainage catheter is connected with a back-flushing balloon through a Luer taper, the inner wall of the back-flushing balloon is provided with a supporting longitudinal beam, and the back-flushing balloon sequentially comprises a front connecting section, a balloon section and a rear connecting section in the drainage direction; the direction of the supporting longitudinal beams is consistent with the drainage direction in the back-flushing balloon, at least one supporting longitudinal beam extends to the front connecting section and the rear connecting section, and the material hardness of the back-flushing balloon is lower than that of the drainage catheter. The material hardness of the recoil balloon is lower than that of the drainage catheter, so that the balloon is pressed to carry out recoil more easily, the springback is slower, excessive drainage caused by instantaneous high negative pressure is prevented, and on the basis of the arrangement, the supporting longitudinal beams are additionally arranged, and the situation that the recoil balloon which is prone to deformation is clamped and closed due to bending or mistaken pressing is prevented.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of lumbar cistern drainage, more specifically, it relates to a kind of anti-clamping backflow drainage tube. BACKGROUND

[0002] Lumbar cistern drainage, as an important treatment method in the field of neurosurgery, is widely used in clinical scenarios such as cerebrospinal fluid leakage repair, intracranial infection control, and intracranial hypertension relief. Drainage catheter, as the core instrument, its reliability is directly related to the treatment effect and the incidence of complications. However, there is a technical defect in the drainage process of the drainage catheter that may cause biological blockage (blood clots or inflammatory floccules). In the prior art, the technical solutions based on backflow to solve biological blockage are as follows:

[0003] (1) The backflow balloon is set outside the drainage passage: the Chinese utility model patent with publication number CN203815935U discloses a peritoneal drainage tube with backflow and anti-blocking function. The inlet end of the drainage tube body is provided with a branch pipe, the branch pipe is clamped with a hand-held air bag, the outlet side of the branch pipe of the drainage tube body is provided with a first switch that can control the closure of the drainage tube, and the outlet end of the branch pipe is also provided with a second switch for closing the outlet. In a certain period of time or when the drainage is not smooth, the second switch is closed, the hand-held air bag is filled with sterilizing liquid or physiological saline, and is clamped at the outlet of the branch pipe, and the first switch is opened at the same time. The hand-held air bag is held and repeatedly compressed and released, and the gas and liquid in the air bag repeatedly flush the side holes of the drainage tube and the inner cavity channel of the drainage tube. The backflow of this scheme is one-time, and the absorbed body fluid (usually cerebrospinal fluid) will enter the air bag and remain inside for a long time. If it is used again, there is a risk of infection.

[0004] (2) The backflow balloon is set in the drainage tube: the Chinese utility model patent with publication number CN215505056U discloses a washable anti-blocking drainage tube. The backflow balloon assembly includes a hand-controlled balloon and two controllable clamping grooves. The head side of the hand-controlled balloon can be connected with the tail side of the drainage tube, and the tail side of the hand-controlled balloon is connected with the head side of the disposable drainage bag. By controlling the opening and closing of the two controllable clamping grooves and squeezing the balloon, the pressure and pressure direction in the drainage tube can be controlled. This scheme does not have the problem of body fluid residue, but the structure of the balloon makes the ratio of its outer wall and volume smaller than that of the drainage tube, which is easy to cause clamping due to bending or mispressing, thereby hindering drainage. SUMMARY

[0005] In order to solve the problems in the prior art, the technical scheme adopted by the present application is: a kind of anti-pinch backflow drainage tube is provided, including drainage catheter, backflow balloon is connected by luer connector, support longitudinal beam is arranged on the inner wall of backflow balloon, backflow balloon includes front connecting section, balloon section and rear connecting section in turn by drainage direction, the direction of support longitudinal beam is consistent with the drainage direction in backflow balloon, at least one support longitudinal beam extends to front connecting section and rear connecting section, and the material hardness of backflow balloon is lower than the material hardness of drainage catheter.

[0006] Optionally, the upper and lower walls of the support longitudinal beam in the backflow balloon are oppositely arranged, and the oppositely arranged support longitudinal beams are the same shape.

[0007] Optionally, the support longitudinal beam is formed by inwardly recessing the outer wall of the backflow balloon, and the thickness of the inwardly recessed portion is consistent with the thickness of the backflow balloon.

[0008] Optionally, the total height of the support longitudinal beam protruding into the backflow balloon is 1 / 4-1 / 2 of the height of the space in the backflow balloon.

[0009] Optionally, the volume ratio of the backflow balloon to the drainage catheter is 0.8:1 to 1.2:1.

[0010] Optionally, the outer wall thickness of the backflow balloon gradually increases from the end near the front connecting section to the end near the rear connecting section.

[0011] Optionally, the wall thickness of the backflow balloon is 0.5-1.2mm, and the Shore hardness is 60-70HA.

[0012] Optionally, a plurality of X-ray developing strips are fixedly arranged on the surface of the drainage catheter at intervals.

[0013] Optionally, the outer wall of the backflow balloon is provided with volume scale lines.

[0014] Optionally, the material of the backflow balloon is PVC, and the material of the drainage catheter is silicone or TPU.

[0015] The anti-pinch backflow drainage tube provided by the present application has the following advantages: compared with the prior art, the anti-pinch backflow drainage tube provided by the present application is designed to make the material hardness of the backflow balloon lower than the hardness of the drainage catheter, so that the backflow of the pressing balloon is easier and the rebound is slower, preventing excessive drainage caused by instantaneous high negative pressure, and on the basis of this setting, the support longitudinal beam is added to prevent the easily deformed backflow balloon from being pinched due to bending or accidental pressing. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0017] Figure 1 The overall structure of the anti-pinch backflow drainage tube is split as shown in the schematic diagram provided by the embodiments of the present application;

[0018] Figure 2 The overall structure of the anti-pinch backflow drainage tube is combined as shown in the schematic diagram provided by the embodiments of the present application;

[0019] Figure 3 The backflow balloon with a material support longitudinal beam is shown in the perspective view provided by the embodiments of the present application;

[0020] Figure 4 The backflow balloon with a material support longitudinal beam is shown in the top view provided by the embodiments of the present application;

[0021] Figure 5 The A-A sectional view of Figure 4 ;

[0022] Figure 6 The balloon section with a support longitudinal beam formed by the inwardly recessed outer wall is shown in the perspective view provided by the embodiments of the present application;

[0023] Figure 7 The balloon section with a support longitudinal beam formed by the inwardly recessed outer wall is shown in the top view provided by the embodiments of the present application;

[0024] Figure 8 The B-B sectional view of Figure 7 ;

[0025] Figure 9 The backflow balloon with the outer wall thickness gradually increasing from the end close to the front connecting section to the end close to the rear connecting section is shown in the schematic diagram provided by the embodiments of the present application;

[0026] Figure 10 The C-C sectional view of Figure 9 .

[0027] Legend of the drawings: 1. drainage catheter; 2. luer joint; 3. outer conical joint; 4. backflow balloon; 5. inner conical joint; 6. support longitudinal beam; 7. front connecting section; 8. balloon section; 9. rear connecting section; 10. transition section; 11. X-ray developing strip; 12. volume scale line. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are only intended to explain the present application and not to limit the present application.

[0029] As shown in Figures 1-5 The present application provides an anti-pinch backflow drainage tube. A drainage catheter 1 is connected with a backflow balloon 4 through a luer joint 2. A support beam 6 is protrusively arranged on the inner wall of the backflow balloon 4. The backflow balloon 4 includes a front connecting section 7, a balloon section 8 and a rear connecting section 9 in sequence from the direction of drainage. The direction of the support beam 6 is consistent with the direction of drainage inside the backflow balloon 4. At least one support beam 6 extends to the front connecting section 7 and the rear connecting section 9. The material hardness of the backflow balloon 4 is lower than that of the drainage catheter 1. An outer conical joint 3 is arranged at the end of the front connecting section 7 away from the balloon section 8. An inner conical joint 5 is arranged at the end of the rear connecting section 9 away from the balloon section 8. The outer conical joint 3 is connected with the luer joint 2.

[0030] In use, the drainage catheter 1 is placed in a drainage site. The drainage catheter 1 works through the pressure difference between the drainage site and the outside world or active drainage. When blood clots or inflammatory flocculent substances in the drainage catheter 1 are blocked, the drainage speed and flow will change obviously. In severe cases, the flow will be interrupted. At this time, the backflow balloon 4 is manually pressed to provide backflow pressure for the drainage catheter 1, thereby dredging the drainage catheter 1.

[0031] The support beam 6 is arranged on the inner wall of the backflow balloon 4. The beam will slightly affect the backflow pressure when pressed, but this problem can be solved by increasing the pressing speed or pressing on both sides of the beam. The material hardness of the backflow balloon 4 is lower than that of the drainage catheter 1, which makes the pressing more comfortable. The negative pressure provided by the backflow balloon 4 with soft material is smaller and more stable when it returns to its natural shape, which can effectively prevent high negative pressure from occurring in a short time and prevent excessive drainage.

[0032] Due to the structure and material of the backflow balloon 4, it is more likely to be pinched due to bending and mispressing compared with the drainage catheter 1. The support beam 6 prevents the backflow balloon 4 from being pinched, ensuring continuous drainage. Since there is a transition section 10 between the balloon section 8 and the front connecting section 7 and the rear connecting section 9 of the backflow balloon 4, at least one support beam 6 extends to the front connecting section 7 and the rear connecting section 9 to ensure the structural stability of the transition section 10.

[0033] Although the support beam 6 contains the word "beam" in its component name, the present application only requires that its arrangement position be consistent with the direction of drainage inside the backflow balloon 4, and does not limit its shape to be straight. When the backflow balloon 4 is crescent-shaped or S-shaped, the support beam 6 is adjusted to be crescent-shaped or S-shaped to ensure the anti-pinch effect when the backflow balloon 4 is bent or mispressed.

[0034] In another embodiment of the present application, as shown in Figure 1 and Figure 5 , the support longitudinal beams 6 are oppositely arranged on the upper and lower walls of the recoil balloon 4, and the oppositely arranged support longitudinal beams 6 are identical in shape. The oppositely arranged support longitudinal beams 6 identical in shape can provide more drainage space when the recoil balloon 4 is clamped due to bending and mispressing, and further ensure continuous drainage.

[0035] In another embodiment of the present application, as shown in Figure 1 and Figures 6-8 , the support longitudinal beams 6 are formed by inward recessing the outer wall of the recoil balloon 4, and the thickness of the inward recessed part is consistent with the thickness of the recoil balloon 4. The support longitudinal beams 6 arranged by recessing can still play a role in preventing clamping when the recoil balloon 4 is bent, and compared with the support longitudinal beams 6 with additional materials, the arrangement can provide higher recoil pressure when the recoil balloon 4 is used for recoil under normal pressing.

[0036] In another embodiment of the present application, as shown in Figure 1 and Figure 5 , the total height of the support longitudinal beams 6 protruding into the recoil balloon 4 is 1 / 4-1 / 2 of the height of the space in the recoil balloon 4. By ensuring that the total height of the support longitudinal beams 6 protruding into the recoil balloon 4 is at least 1 / 4, the drainage volume when the recoil balloon 4 is bent and mispressed is ensured, and by ensuring that the total height of the support longitudinal beams 6 protruding into the recoil balloon 4 is at most 1 / 2, the recoil balloon 4 can be pressed more easily under normal pressing.

[0037] In another embodiment of the present application, as shown in Figure 1 , the ratio of the volume of the recoil balloon 4 to the volume of the drainage catheter 1 is 0.8:1 to 1.2:1. If the volume of the recoil balloon 4 is too large, excessive recoil will occur, and a large amount of body fluid that has been drained will flow back to the body, while the body fluid in the drainage catheter 1 has not been in contact with air. The ratio of the volume of the recoil balloon 4 to the volume of the drainage catheter 1 is at most 1.2:1 to reduce the risk of infection, and the ratio of the volume of the recoil balloon 4 to the volume of the drainage catheter 1 is at least 0.8:1 to ensure the recoil effect.

[0038] In another embodiment of the present application, as shown in Figure 1 , Figure 9 and Figure 10As shown, the outer wall thickness of the recoil balloon 4 gradually increases from the end close to the front connecting section 7 to the end close to the rear connecting section 9. As can be seen from the figure, the support longitudinal beam 6 is in a fixed position, while the total thickness of the two walls of the balloon section gradually increases from top to bottom. The flow direction of the normal body fluid drainage process is from the front connecting section 7 to the balloon section 8 to the rear connecting section 9. The gradually increasing outer wall thickness of the recoil balloon 4 is arranged to enable the upper and lower surfaces of the recoil balloon 4 to close first at the end of the rear connecting section 9 when parallel pressing is applied (the closing is not considered in the presence of the support longitudinal beam 6), and then the recoil pressure is directed towards the end of the front connecting section 7 and the drainage catheter 1, thereby improving the recoil effect.

[0039] In another embodiment of the present application, as shown in Figure 1 The wall thickness of the recoil balloon 4 is 0.5-1.2mm, and the Shore hardness is 60-70HA. The structure and material of the recoil balloon 4 directly affect the rebound effect (efficiency of restoring the original shape) and the difficulty of pressing of the recoil balloon 4. In order to control the recoil balloon 4 to still meet the rebound after the artificial pressing is released, it is necessary to control the wall thickness and hardness of the recoil balloon 4.

[0040] In another embodiment of the present application, as shown in Figure 1 In this embodiment, the interval is 1cm, and the length of the X-ray developing strip 11 is 1cm. The fixed interval X-ray developing strip 11 can indicate the position of the drainage catheter in the human body under X-ray.

[0041] In another embodiment of the present application, as shown in Figure 1 The recoil balloon 4 is provided with volume scale lines 12. When the vertical height of the front connecting section 7 of the recoil balloon 4 is higher and the vertical height of the rear connecting section 9 is lower, the recoil balloon 4 is similar to the drip chamber of an infusion device. Before the recoil is used, the liquid level in the recoil balloon 4 is adjusted, which can control the body fluid in the recoil balloon to flow back with the recoil.

[0042] In another embodiment of the present application, as shown in Figure 1 The material of the recoil balloon 4 is PVC (polyvinyl chloride), and the material of the drainage catheter 1 is silicone or TPU (thermoplastic polyurethane elastomer rubber). Silicone and TPU have excellent biocompatibility and will not cause significant immune response or tissue rejection. PVC has good transparency, and the transparent PVC recoil balloon can provide better visualization effect, which can observe the condition of the body fluid inside the recoil balloon.

[0043] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An anti-pinch backflow drainage tube comprising a drainage catheter, characterised in that: The drainage catheter is connected with a backflush balloon through a luer joint, the inner wall of the backflush balloon is provided with a support longitudinal beam, the backflush balloon comprises a front connecting section, a balloon section and a rear connecting section in sequence in the direction of drainage, the direction of the support longitudinal beam is consistent with the direction of drainage in the backflush balloon, the support longitudinal beam extends to the front connecting section and the rear connecting section at least in one place, and the material hardness of the backflush balloon is lower than that of the drainage catheter.

2. The anti-pinch backflush drain of claim 1, wherein: The support longitudinal beams are oppositely arranged on the upper and lower walls in the backflush balloon, and the oppositely arranged support longitudinal beams are of the same shape.

3. The anti-pinch backwash drain of claim 1, wherein: The support longitudinal beam is formed by inwardly recessing the outer wall of the backflush balloon, and the thickness of the inwardly recessed part is consistent with the thickness of the backflush balloon.

4. The anti-pinch backwash drain of claim 1, wherein: The total height of the support longitudinal beam protruding into the backflush balloon is 1 / 4-1 / 2 of the height of the space in the backflush balloon.

5. The anti-pinch backwash drain of claim 1, wherein: The ratio of the volume of the backflush balloon to the volume of the drainage catheter is 0.8:1 to 1.2:

1.

6. The anti-pinch backwash drain of claim 4, wherein: The thickness of the outer wall of the backflush balloon gradually increases from the end close to the front connecting section to the end close to the rear connecting section.

7. The anti-pinch backwash drain of claim 4, wherein: The wall thickness of the backflush balloon is 0.5-1.2mm, and the Shore hardness is 60-70HA.

8. The anti-pinch backwash drain of claim 5, wherein: The surface of the drainage catheter is fixedly and spacedly provided with a plurality of X-ray developing strips.

9. The anti-pinch backwash drain of claim 1, wherein: The outer wall of the backflush balloon is provided with volume scale lines.

10. The anti-pinch siphon drain of claim 1, wherein: The material of the backflush balloon is PVC, and the material of the drainage catheter is silicone or TPU.

Images