Capsule-encapsulated tip catheter

Abstract

The utility model discloses a kind of capsule packaging tip type catheters, catheter has distal end, proximal end and catheter body, catheter body is made of biocompatible elastic material, catheter body includes at least one substantially parallelly arranged flow cavity and at least one inflation cavity for multiple capsules to flow and supply capsule filling, the distal end of catheter body is catheter tip, fixed balloon is set in the catheter tip, the catheter tip is also provided with the support balloon of packaging its tip, by the injection or inflation of inflation cavity for flowing with balloon, fixed balloon and support balloon are filled in turn, reach the purpose of making catheter fixed in suitable position and catheter tip packaging.This catheter is set by packaging support balloon outside catheter tip in distal end on the basis of existing single-balloon catheter, when support balloon is filled, make tip volume swell, hide catheter tip, avoid the irritation and damage of catheter tip to inner wall in prior art.

Description

Technical Field

[0001] This utility model relates to a medical device, and more particularly to a capsule-encapsulated tip-type catheter that can be placed in body channels or cavities. Background Technology

[0002] In existing medical catheter technology, the catheter tip directly contacts the patient's tubing and the inner wall of the body cavity, which can easily cause friction damage and mucosal irritation, especially in cases requiring long-term indwelling catheters, where the risk of injury and infection is even higher. Furthermore, existing catheter designs may not provide sufficient comfort and safety for patients. To better understand this invention, it will be described in conjunction with a urinary catheter, which is a specific area of ​​application for this invention.

[0003] Urinary catheters, as one of the commonly used medical devices, are mainly used to help patients who cannot urinate independently to drain urine. After the catheter is inserted into the bladder through the urethra, a fixation balloon is fitted near the end of the catheter. By introducing fluid or gas, the balloon is inflated, thereby keeping the catheter in the proper position. The catheter drain hole is usually located at the distal end of the catheter. During use, the inner mucosa of the bladder may be drawn into the drain hole, causing blockage, resulting in poor catheterization and patient discomfort.

[0004] Chinese invention patent application CN201410010182.0 discloses "a limited-contact type side-balloon catheter," which involves placing a fixed balloon on one side of the tube body near the catheter tip, with a drainage hole on the opposite side of the tube body at the bottom of the side balloon. During use, water or air is injected upon the presence of urine. The side balloon, positioned behind the catheter in the bladder, automatically tilts to one side during water or air injection, forming a framework space with the bottom of the bladder wall. While this design reduces the problem of drainage hole blockage to some extent, the catheter still has a protruding tip beyond the side balloon. This tip, due to frequent pressure or scraping of the bladder wall, can cause damage and mucosal irritation, increasing patient discomfort and pain during insertion.

[0005] Additionally, the side balloon (fixed balloon) is inflated with water or air to secure the bladder catheter, and the main catheter is pulled back to bring the bladder-fixed balloon close to the internal urethral orifice. However, in actual use, this can increase the probability of urinary leakage to some extent. Utility Model Content

[0006] In order to overcome the scratching and irritation of the body wall caused by the exposed protruding catheter tip in the prior art, this utility model provides a capsule-encapsulated tip-type catheter. Based on a fixed balloon, a supporting balloon is set at the distal catheter tip to encapsulate the tip, thereby preventing the defects of the prior art.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a capsule-encapsulated tip-type catheter, including a distal end, a proximal end, and a catheter body. The catheter body is made of a biocompatible elastic material and includes at least one flow cavity substantially parallel to the body and at least one inflation cavity that communicates with multiple capsules for capsule inflation. The distal end of the catheter body has a catheter tip, and a fixing balloon is sleeved near the catheter tip. The catheter tip is also provided with a support balloon that encapsulates the catheter tip. By injecting liquid or inflating the inflation cavity that communicates with the balloon, the fixing balloon and the support balloon are inflated sequentially, thereby fixing the catheter and encapsulating the tip.

[0008] Furthermore, the inflation chamber is one or more control chambers communicating with one or more bladders, preferably each control chamber provides at least one hole extending through the sidewall of the catheter body, the hole being located within the area of ​​one or more bladders, thereby allowing liquid or gas to enter the bladder from the chamber.

[0009] Preferably, the inflator for balloon inflation is located between the support balloon and the fixation balloon; the balloon expands radially and / or axially by injecting sterile liquid or inflating the control cavity through the inflator and the inflator, thereby inflating the fixation balloon and securing the catheter; the support balloon extends beyond the distal surface of the tip, acting as a barrier between the tip and the inner wall.

[0010] Furthermore, the inflation chamber includes a head, and the head may also be provided with a retaining ring and an air valve.

[0011] Furthermore, both the catheter body and the balloon are preferably made of biocompatible elastic materials, such as, but not limited to, natural latex, latex mixtures, synthetic rubber, silicone mixtures, plastics, silicone and polyolefins.

[0012] Furthermore, the inner and / or outer surfaces of the bladder may include thick and / or thin sections, thereby enabling the bladder to expand into the desired shape.

[0013] Preferably, the thick section can be a rib or a convex corner, or a combination of both. This design allows the bladder to expand into the desired shape, increases its stability, and reduces the risk of bladder rupture.

[0014] Furthermore, at least one discharge port is provided between the two balloons to reduce or eliminate the problem of the mucosal inner layer being drawn into the discharge port during catheter use, causing blockage and patient discomfort.

[0015] Furthermore, the tip of the conduit may have at least one drain hole communicating with the flow cavity, in order to further reduce the risk of drain hole blockage and the problem of liquid residue.

[0016] Furthermore, the catheter body is provided with graduation lines, and graduation marks are marked on the graduation lines; when medical staff insert the catheter into the patient's urethra until it reaches the bladder, the graduation marks on the catheter can be used to show the length of the patient's urethra, so as to facilitate the nursing staff to insert it again as a reference.

[0017] The beneficial effects of this invention are that the capsule-encapsulated tip-type catheter of this invention, based on the existing single-balloon catheter, by setting an encapsulated support balloon outside the distal catheter tip, causes the tip volume to expand when the support balloon is inflated, hiding the protruding tip, avoiding the stimulation and damage to the inner wall by the protruding catheter tip in the prior art, reducing the occurrence of inflammation, and alleviating the discomfort caused to the patient during catheter insertion. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a longitudinal sectional view of one embodiment of the present invention;

[0020] Figure 2 This is a radial cross-sectional view of one embodiment of the present invention;

[0021] Figure 3 This is a longitudinal sectional view of one embodiment of the present invention, showing the sac in a filled state;

[0022] Figure 4 This is a longitudinal sectional view of one embodiment of the present invention, showing multiple inflation chambers and holes;

[0023] Figure 5 This is a radial cross-sectional view of one embodiment of the present invention, showing multiple inflation chambers and holes;

[0024] Figure 6 This is a longitudinal sectional view of one embodiment of the present invention, showing multiple inflation chambers and holes and a bladder in an inflated state;

[0025] Figure 7 This is a longitudinal sectional view of one embodiment of the present invention, showing the drain hole at the distal end of the catheter tip;

[0026] Figure 8 This is a longitudinal sectional view of one embodiment of the present invention, showing the discharge hole at the distal end of the catheter tip and the sac in a filled state;

[0027] Figure 9 This is a radial cross-sectional view of one embodiment of the present invention, showing the thick section and the thin section portion;

[0028] Figure 10 This is a longitudinal sectional view of one embodiment of the present invention, showing the proximal structure of the catheter;

[0029] In the figure: 1. Catheter body, 2. Flow chamber, 3. Inflation chamber, 4. Catheter tip, 5. Fixation balloon, 6. Support balloon, 7. Orifice for balloon inflation, 8. Excretion orifice, 9. Catheter lumen, 10. Lumen fixation ring, 11. Air valve, 12. Thin section of balloon, 13. Thick section of balloon. Detailed Implementation

[0030] Reference Figure 1-3 This utility model provides a capsule-encapsulated tip-type catheter, including a distal end, a proximal end, and a catheter body 1. The catheter body 1 is preferably made of an elastic biocompatible material. The catheter body 1 includes at least one flow chamber 2 substantially parallel to the body 1 and at least one inflation chamber 3 that communicates with multiple capsules for capsule inflation. The distal end of the catheter body 1 has a catheter tip 4, and a fixing balloon 5 is sleeved near the catheter tip 4. The catheter tip 4 is also provided with a support balloon 6 that encapsulates the tip 4. By injecting liquid or inflating the inflation chamber 3 that communicates with the balloon, the fixing balloon 5 and the support balloon 6 are inflated sequentially, so that the catheter is fixedly placed in a body cavity, body tube, or blood vessel, and the catheter tip 4 is encapsulated to avoid the defects of the prior art.

[0031] See Figure 4 By allowing preferred sterile fluid to pass through one or more inflation chambers 3, the fixation balloon 5 and the support balloon 6 can expand longitudinally and / or radially, said one or more inflation chambers 3 extending through the catheter body 1 and disposed substantially parallel to the catheter body 1. Preferably, each inflation chamber 3 is provided with at least one orifice 7, said orifice 7 being disposed within the region of one or more fixation balloons 5 and support balloons 6, preferably, said orifice 7 being disposed at an intermediate position between fixation balloon 5 and support balloon 6, thereby allowing sterile fluid to enter the balloon through the inflation chamber 3, causing the balloon to inflate. In a preferred embodiment, the fixation balloon 5 and support balloon 6 are each provided with independent inflation chambers 3 and at least one orifice 7 communicating with the inflation chambers, to independently and sequentially control the inflation of the two balloons, most preferably, through independent control, the fixation balloon 5 inflates before the support balloon 6.

[0032] See Figure 10 The inflow and / or outflow of sterile fluid can be controlled using the retaining ring 10 or other components. It should be noted that although the illustrated embodiment shows only one flow chamber 2, multiple flow chambers can be provided without departing from the scope of the invention. For example, multiple lumen heads 9 and multiple flow chambers 2 can be provided, with flushing holes (same as hole 8) provided on the catheter body in conjunction with the flow chambers 2, enabling medication administration and flushing of patient cavities or catheters as needed.

[0033] Both the catheter body 1 and the balloons (fixation balloon 5 and support balloon 6) are preferably made of biocompatible elastic materials, such as, but not limited to, natural latex, latex mixtures, synthetic rubber, silicone mixtures, plastics, silicone and polyolefins.

[0034] See Figure 7 and 8 Preferably, at least one drain hole 8 is placed between the fixing balloon 5 and the supporting balloon 6. During catheter use, both balloons inflate, reducing or preventing the risk of the bladder wall being drawn into the catheter. Preferably, the catheter tip 4 may have at least one drain hole 8 communicating with the at least one flow chamber 2, to further reduce the risk of drain hole blockage and potential inflammatory problems caused by fluid residue. Although only in Figure 7 and 8 The embodiment shows an excretion port 8 opened at the catheter tip 4, but it should be noted that this setting is applicable to each of the described embodiments or any system (body tube or body cavity, blood vessel) of the present invention.

[0035] See Figure 9 The inner and / or outer surfaces of the fixing balloon 5 and the supporting balloon 6 may also include thick sections 13 and thin sections 14, forming multiple regions with different thicknesses. Because the thick sections 13 and thin sections 14 have different resistance to liquid or gas pressure, the thin sections 14 expand more easily than the thick sections 13, resulting in balloons with different shapes such as ribs, protrusions, or combinations thereof, allowing the fixing balloon 5 and the supporting balloon 6 to expand into the desired shape. The formation of ribs or protrusions serves two purposes: firstly, it increases the strength of the balloon, providing stability and preventing rupture during use; secondly, it provides recessed areas when the balloon expands, allowing residual fluid, i.e., urine, to flow out from the tip of the balloon, reducing inflammation caused by fluid residue.

[0036] Preferably, each of the fixation balloon 5 and the support balloon 6 can be made of materials with different thicknesses and / or hardness values, which allows the balloons to inflate at different rates. In a preferred embodiment, by setting different balloon thicknesses, the fixation balloon 5 inflates before the support balloon 6, ensuring that the catheter inflates in the appropriate position.

[0037] Preferably, the surface of the catheter body may also be provided with graduation lines, and graduation marks can be made at the graduation lines. When the medical staff inserts the urinary catheter into the patient's urethra until the appropriate position, the fixation balloon 5 can be controlled to inflate and fix the urinary catheter, and then the support balloon 6 can be controlled to inflate to seal the protruding tip of the urinary catheter, and the graduation lines of the urinary catheter are marked to indicate the length of the patient's urethra, so as to facilitate the nursing staff to insert it again as a reference.

Claims

1. A capsule-encapsulated tip-type catheter, comprising a distal end, a proximal end, and a catheter body (1), said catheter body (1) being made of a biocompatible elastic material, comprising at least one flow cavity (2) substantially parallel to said body (1) and at least one inflation cavity (3) communicating with a plurality of capsules for capsule inflation, characterized in that, The catheter body (1) has a catheter tip (4) at its distal end. A fixing balloon (5) is fitted near the catheter tip (4). The catheter tip (4) is also provided with a support balloon (6) to encapsulate the tip. By injecting liquid or inflating the inflation chamber (3) that communicates with the balloon, the fixing balloon (5) and the support balloon (6) are inflated one after the other, so that the catheter is fixed and the tip is encapsulated.

2. The balloon-catheter tipped catheter of claim 1, wherein, The catheter body (1) includes two or more lumens.

3. The balloon-catheter tip type catheter according to claim 2, wherein At least one cavity is connected to the fixed balloon (5) and the supporting balloon (6).

4. The balloon-catheter tip type catheter according to claim 3, wherein The inflation chamber (3) is a control chamber, each control chamber including at least one hole (7) extending through the sidewall of the catheter body, the hole (7) being located in the area of ​​one or more sacs, thereby allowing liquid or gas to enter the sac from the control chamber to inflate the sac.

5. The balloon-catheter tip type catheter according to claim 4, wherein The hole (7) is located between the fixed balloon (5) and the supporting balloon (6).

6. The bladder-encapsulated tipped catheter of claim 1, wherein, The catheter tip (4) is provided with at least one support balloon (6) that encapsulates the catheter tip (4).

7. The balloon-catheter tipped catheter according to claim 1 or 2, characterized in that The catheter body (1) includes at least one drain hole (8) for liquid discharge, the drain hole (8) being located between the two balloons and communicating with the flow chamber (2).

8. The balloon-catheter tipped catheter according to claim 1 or 2, characterized in that The tip of the catheter (4) may have at least one drain hole (8) communicating with the flow chamber (2).

9. The balloon-catheter tipped catheter of claim 1, wherein, The inner and / or outer surfaces of the fixation balloon (5) and the support balloon (6) also include thick sections (13) and thin sections (14) to allow the balloon to inflate into the desired shape.

10. The balloon-catheter tipped catheter of claim 9, wherein, The thick section (13) is a rib or a convex corner, or a combination of both.

11. The balloon-catheter tipped catheter of claim 1, wherein, The catheter body (1), the fixation balloon (5), and the support balloon (6) are all made of biocompatible elastic material.

12. The balloon-catheter tipped catheter of claim 1, wherein, The surface of the catheter body (1) is provided with scale lines, and scale markings can be made at the scale lines.

13. The capsule-encapsulated tip-type catheter according to claim 1, characterized in that, The inflation chamber (3) includes a chamber head (9), and the chamber head (9) is also provided with a fixing ring (10) and an air valve (11).

14. The bladder-catheter tip catheter of claim 1, wherein, The catheter is a urinary catheter.

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