Urinary catheter with top end made of multi-layer composite material

Abstract

The present invention relates to a medical device, and specifically relates to a urinary catheter with a urinary catheter top end made of a multi-layer composite material. The technical problem to be solved by the present invention is that the material used in the existing urinary catheters is relatively hard for the bladder mucosa, and the relatively hard top end of the urinary catheter may press and stimulate the bladder wall to cause bladder stimulation symptoms such as frequent urination, urgent urination, abdominal pain, and intense sensation of holding back urine. According to the present invention, the top end of the urinary catheter is made of a multi-layer composite material and is formed by nesting two or more layers of materials with different hardness, wherein the innermost layer is an inner lining layer, and the inner lining layer is continuous with the wall of the remaining urinary catheter but has a smaller thickness. A soft cushion layer is nested on the surface of the inner lining layer, the soft cushion layer is made of a softer material than the inner lining layer, and one or more film layers may be additionally disposed on the outer side of the soft cushion layer to wrap the soft cushion layer inside a closed cavity. The present invention has the beneficial effects that the top end of the urinary catheter is of a layered structure, and the hardness of different layers of materials is different, wherein the part of the outer layer in direct contact with the bladder wall is made of a super-flexible material so as to reduce the compression on the bladder mucosa, and the inner layer and other parts of the urinary catheter are made of relatively hard materials so as to ensure the support degree of the urinary catheter.

Description

A urinary catheter with a multi-layer composite material at the top end TECHNICAL FIELD

[0001] The present application relates to a medical device, in particular to a urinary catheter with a multi-layer composite material at the top end. BACKGROUND

[0002] Urinary catheters are very common medical devices in medical and nursing. However, wearing a urinary catheter often causes bladder irritation symptoms such as frequent urination, urinary urgency, abdominal pain, and strong sense of urinary retention, and blood in urine, which brings great pain to patients. One of the most important reasons for this is that the current urinary catheter material is relatively hard compared to the bladder mucosa, and the pressure of the urinary catheter tip on the bladder wall can cause local mucosal congestion, damage, edema, and pain. In order to reduce the irritation of the urinary catheter, a softer material should be used to manufacture the urinary catheter, but the urinary catheter needs to have sufficient hardness to overcome the resistance of catheterization and prevent the lumen from being compressed and collapsed, so in practice it limits the use of too soft material for the urinary catheter. The current urinary catheter cannot solve the problem of pressure and irritation of the urinary catheter tip on the bladder wall. TECHNICAL PROBLEM

[0003] The technical problem to be solved by the present application is that in order to maintain the support, the current urinary catheter uses a material that is relatively hard compared to the bladder mucosa, and the relatively hard tip of the urinary catheter can press and irritate the bladder wall, causing bladder irritation symptoms such as frequent urination, urinary urgency, abdominal pain, and strong sense of urinary retention. The present application proposes a urinary catheter with a multi-layer composite material at the top end, the outer layer of the urinary catheter tip is wrapped in super-soft material, and the inner layer of the urinary catheter tip and other parts of the urinary catheter are made of conventional urinary catheter material, which can use super-soft material to reduce the pressure and irritation of the urinary catheter tip on the bladder wall, while maintaining the support of the urinary catheter. The present application is a urinary catheter with a new structure and a new medical device. TECHNICAL SOLUTION

[0004] The present application is a urinary catheter with a multi-layer composite material at the top end, the urinary catheter is sequentially from head to tail as a tube head, a tube body, and a tube tail, the front end of the tube head is the top end, the tube head has a drainage hole, the tube tail has a urine bag interface, and the top end of the urinary catheter is a multi-layer composite material composed of two or more layers of materials with different hardness, the innermost layer is an inner lining layer, and the inner lining layer is continuous with the rest of the urinary catheter wall but thinner. A soft pad layer is nested on the outer surface of the inner lining layer, the soft pad layer is softer than the inner lining layer, and the material of the soft pad layer includes but is not limited to silicone gel, liquid silicone, plant glue, and soft glue. A thin film layer can be additionally attached to the outside of the soft pad layer, the thin film layer is fused with the tube wall at the edge of the soft pad layer on the tube head, an enclosed cavity is formed between the thin film layer and the inner lining layer, the soft pad layer is wrapped inside the enclosed cavity, and the material of the thin film layer includes but is not limited to silicone, latex, and polyethylene. The combination interface of the soft pad layer and the inner lining layer can be flat or non-flat. The urinary catheter includes but is not limited to a balloon urinary catheter, a flower-shaped urinary catheter, a disposable single-lumen urinary catheter, a double-lumen urinary catheter, a multi-lumen urinary catheter, a straight head urinary catheter, and a curved head urinary catheter. Beneficial effects

[0005] The beneficial effects of the present application are that the urethral tube directly abuts against the top end of the bladder, which is a layered structure, and the hardness of different layers is different, which can achieve different effects of the urethral tube. The outer layer of the top end directly contacting the bladder wall is made of super flexible material, which can reduce the pressure on the bladder mucosa. The inner layer of the top end and other parts of the urethral tube are made of relatively hard material, which can ensure the support of the urethral tube. The inner layer of the top end and the rest of the urethral tube have consistent material and coherent structure, which can maintain the integrity and firmness of the urethral tube head. There is no similar design to the present application, and the present application is an innovative application with practical significance. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 is a schematic diagram of the embodiment 1 of the present application;

[0007] Figure 2 is a schematic diagram of the embodiment 2 of the present application;

[0008] Figure 3 is a schematic diagram of the embodiment 3 of the present application;

[0009] Figure 4 is a schematic diagram of the embodiment 4 of the present application;

[0010] Figure 1 is a schematic diagram of the embodiment 1 of the present application; Best mode of the present application

[0011] Embodiment 1: As shown in Figure 1, a balloon urethral tube with a top end made of multi-layer composite material, the urethral tube from head to tail is in turn a tube head 1, a tube body 2, and a tube tail 3. The front end of the tube head 1 is a top end 4. The tube head 1 has a drainage hole 5 and a balloon 6. The tube tail 3 has a urine bag interface 7 and a balloon water inlet 8. The top end 4 of the urethral tube is composed of two layers of materials with different hardness. The inner layer is an inner lining layer 9 made of silicone material, which is continuous with the rest of the urethral tube wall but thinner in thickness. A soft pad layer 10 is nested outside the inner lining layer 9. The soft pad layer 10 is made of softer soft glue material than the inner lining layer 9. The combined interface between the soft pad layer 10 and the inner lining layer 9 is flat. Embodiment of the present application

[0012] Embodiment 2: As shown in Figure 2, a balloon catheter with a multi-layer composite material at the top end, the catheter sequentially from head to tail is a tube head 1, a tube body 2, and a tube tail 3, the frontmost end of the tube head 1 is a top end 4, the tube head 1 has a drainage hole 5 and a balloon 6, the tube tail 3 has a urine bag interface 7 and a balloon water inlet 8, the top end 4 of the catheter is composed of three layers of materials with different hardness, from inside to outside are an inner liner 9, a soft pad layer 10, and a film layer 11, the inner liner 9 is a silica gel material, continuous with the rest of the catheter wall but thinner, the soft pad layer 10 is nested outside the inner liner 9, the combination interface between the soft pad layer 10 and the inner liner 9 is flat, the material of the soft pad layer 10 is a softer silica gel than the inner liner 9, the film layer 11 of silica gel material is nested outside the soft pad layer 10, the film layer 11 is fused with the outside of the tube wall of the tube head 1, a closed cavity is formed between the film layer 11 and the inner liner 9, and the soft pad layer 10 is wrapped inside the closed cavity.

[0013] Embodiment 3: As shown in Figure 3, a balloon catheter with a multi-layer composite material at the top end, the catheter sequentially from head to tail is a tube head 1, a tube body 2, and a tube tail 3, the frontmost end of the tube head 1 is a top end 4, the tube head 1 has a drainage hole 5 and a balloon 6, the tube tail 3 has a urine bag interface 7 and a balloon water inlet 8, the top end 4 of the catheter is composed of three layers of materials with different hardness, from inside to outside are an inner liner 9, a soft pad layer 10, and a film layer 11, the inner liner 9 is a silica gel material, continuous with the rest of the catheter wall but thinner, the soft pad layer 10 is nested outside the inner liner 9, the combination interface between the soft pad layer 10 and the inner liner 9 is flat, the material of the soft pad layer 10 is a softer plant glue than the inner liner 9, the film layer 11 of polyethylene material is nested outside the soft pad layer 10, the film layer 11 is fused with the outside of the tube wall of the tube head 1, a closed cavity is formed between the film layer 11 and the inner liner 9, and the soft pad layer 10 is wrapped inside the closed cavity.

[0014] Embodiment 4: As shown in Figure 4, a balloon catheter with a multi-layer composite material at the top end, the catheter sequentially from head to tail is a tube head 1, a tube body 2, and a tube tail 3, the frontmost end of the tube head 1 is a top end 4, the tube head 1 has a drainage hole 5 and a balloon 6, the tube tail 3 has a urine bag interface 7 and a balloon water inlet 8, the top end 4 of the catheter is composed of two layers of materials with different hardness, the innermost layer is an inner liner 9, the inner liner 9 is a silica gel material, continuous with the rest of the catheter wall but thinner, a soft pad layer 10 is nested outside the inner liner 9, the soft pad layer 10 is a softer soft glue material than the inner liner 9, the combination interface between the soft pad layer 10 and the inner liner 9 is concave-convex corrugated. Industrial applicability

[0015] The application can be manufactured and used by using existing production technology, which can positively affect the improvement of medical level and the improvement of patient's life quality.

Claims

1. A urinary catheter with a multi-layered composite material at its tip, comprising a tube head, a tube body, and a tube tail from head to tail, wherein the very tip of the tube head is the tip, the tube head has a drainage hole, and the tube tail has a urine bag interface, characterized in that: The top end of the urinary tube is made of multi-layer composite material, which is composed of two or more layers of materials with different hardness. The innermost layer is the lining layer, which is continuous with the rest of the urinary tube wall but thinner. The soft cushion layer is nested on the outer surface of the lining layer, and the material of the soft cushion layer is softer than that of the lining layer.

2. The urinary catheter of claim 1, wherein: The number of layers of the multi-layer composite material at the top end of the urinary tube includes two or more layers, which can be two, three, or four layers.

3. The urinary catheter of claim 1, wherein: The outer surface of the soft cushion layer at the top end of the urinary tube can also be attached to one or more film layers. The tail edge of the film layer is fused with the pipe wall at the edge of the soft cushion layer on the pipe head. The film layer and the lining layer form a closed cavity, which wraps the soft cushion layer inside. The material of the film layer includes but is not limited to silicone, latex, and polyethylene.

4. The urinary catheter of claim 1, wherein: The interface between the soft cushion layer and the lining layer at the top end of the urinary tube can be flat or non-flat.

5. The urinary catheter of claim 1, wherein: The material of the soft cushion layer at the top end of the urinary tube includes but is not limited to silicone gel, liquid silicone, plant glue, and soft glue.

6. The urinary catheter of claim 1, wherein: The types of urinary tubes include but are not limited to balloon urinary tubes, flower-shaped urinary tubes, disposable single-lumen urinary tubes, double-lumen urinary tubes, multi-lumen urinary tubes, straight-head urinary tubes, and elbow urinary tubes.

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