Multi-gear urinary catheterization structure

Abstract

The multi-gear urethral catheterization structure comprises a guide head, a lotus balloon and a tube body which are sequentially connected, the guide head is connected with a guide wire, and the end, away from the guide head, of the guide wire is connected with an operation device used for controlling the guide wire to move along the tube body; the lotus balloon at least has three states, including an initial state with the curvature larger than zero. And the operating device is at least provided with three gears which can respectively correspond to the three states. The utility model has the advantages that the lotus sacculus is effectively ensured to deform according to a preset shape, and the risk caused by structural shaping is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a multi-position catheterization structure. Background Technology

[0002] A urinary catheter is a commonly used clinical medical device. Healthcare professionals use a catheter to create an artificial channel between the bladder and a urine collection bag to drain urine. Currently, most clinically used catheters are inflatable balloon catheters. After the catheter is inserted into the patient's body, the balloon at the end of the catheter is inflated with air or water to fill the bladder. When inflated, the balloon is held in place by interference to prevent the catheter from slipping out. However, according to feedback from clinical healthcare professionals, balloon catheters have problems such as "balloon inability to inflate," "balloon leakage," "balloon rupture," "difficulty in catheter removal due to incomplete expulsion of gas and water from the balloon," and "residual urine volume," which can negatively impact the patient's health and recovery, posing certain risks.

[0003] To reduce the risks of use, a new type of lotus-head catheter has emerged on the market (such as the lotus-head catheter with application number CN202122377612.0). This catheter features a lotus-shaped balloon with a four-lobed Malecot structure at its end. A guidewire connects the catheter tip to the operating end, allowing for pulling and pushing operations at the operating end to control the deformation of the lotus balloon. The "open" and "close" positions on the operating end correspond to the lotus head opening and closing states, respectively. When the lotus head is open, the catheter tip forms a lotus-shaped balloon structure, which is then secured in the bladder to prevent slippage, achieving indwelling placement. However, existing lotus-head catheters have drawbacks: the lotus balloon does not deform according to its intended shape, making it prone to dislodgement during indwelling catheterization. Furthermore, the structure of the lotus balloon tends to solidify over time, causing it to remain slightly open even when the operating end is in the "close" position, posing risks such as difficulty in removal or urethral injury. The aforementioned problems render the lotus-head urinary catheter unsuitable for clinical needs.

[0004] How to solve the above problems has become an urgent technical issue. Utility Model Content

[0005] The purpose of this invention is to provide a multi-position catheter structure that effectively ensures the lotus balloon deforms according to a predetermined shape and reduces the risks associated with structural shaping.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a multi-position catheterization structure, including a guide head, a lotus balloon, and a tube body connected in sequence. The guide head is connected to a guide wire, and the end of the guide wire away from the guide head is connected to an operating device for controlling the movement of the guide wire along the tube body. The lotus balloon has at least three states, including an initial state with a curvature greater than zero. The operating device is provided with at least three positions that correspond to the three states respectively.

[0008] Furthermore, the operating device includes an inner tube and an operating outer tube, the inner tube and the operating outer tube being slidably connected, wherein the inner tube is connected and communicates with the tube body and is provided with at least three slots along its axial direction, the operating outer tube is provided with a buckle, the buckle and each slot are engaged to form at least three positions, and the operating outer tube is provided with a connecting part for fixing the end of the guide wire away from the guide head.

[0009] Furthermore, a sliding cover is slidably provided on the operating outer tube along its axial direction. The sliding cover is provided with an elastic element whose extension and retraction direction is parallel to the axial direction of the operating outer tube. The two ends of the elastic element are respectively connected to the sliding cover and the operating outer tube to form a structure that can push the sliding cover to slide to the bottom of the sliding cover and abut against the side of the buckle away from the slot.

[0010] Furthermore, the connecting part includes an extended outer tube, one end of which is sleeved and connected to the end of the operating outer tube away from the inner tube, and the other end of the extended outer tube is sleeved with a fixing ring. The end of the guide wire away from the guide head passes through the inner cavity of the tube body, the inner tube, the operating outer tube, and the extended outer tube in sequence and is fixed between the extended outer tube and the fixing ring.

[0011] Furthermore, a sealing ring is provided between the inner tube and the operating outer tube.

[0012] Furthermore, it also includes a rear connector, wherein the side of the operating device away from the pipe body is connected to the rear connector.

[0013] Furthermore, the wall thickness of the lotus-shaped sac is greater than the wall thickness of the tube body.

[0014] Furthermore, the lotus balloon includes several strip-shaped bodies, the two ends of which are fixedly connected to the guide head and the tube body respectively, and each strip-shaped body is arranged in a ring on the outside of the guide wire.

[0015] Furthermore, the states also include an insertion state and a retention state, and the curvature of the lotus sac increases sequentially in the insertion state, the initial state, and the retention state.

[0016] Furthermore, the curvature of the lotus-shaped sac is zero in the inserted state.

[0017] Due to the adoption of the above structure, the beneficial effects of this utility model are as follows:

[0018] This invention features a lotus-shaped balloon with a curvature greater than zero in its initial state. By pre-forming the balloon, it naturally expands slightly outward when not in use. During the deformation process, as the operating device guides the balloon through guide wires and guide heads, the balloon is effectively ensured to deform in the direction of increasing curvature. Furthermore, the lotus balloon has at least three states and at least three corresponding settings, allowing medical personnel to select different settings for different stages of use and control the degree of deformation as needed. This effectively prevents the balloon from becoming fixed in shape, reducing the risks associated with structural fixation.

[0019] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a front view of the present invention in the inserted state;

[0023] Figure 3 This is a front view of the present invention in its initial state;

[0024] Figure 4 This is a front view of the present invention in the indwelling state;

[0025] Figure 5 This is a partial cross-sectional view of the buckle of this utility model when it is pressed by the sliding cover;

[0026] Figure 6 This is a partial cross-sectional view of the buckle of this utility model when it is not pressed by the sliding cover;

[0027] Figure 7 This is a partial cross-sectional view of the end of the present invention away from the operating device when it is in the inserted state;

[0028] Figure 8 This is a partial enlarged view of part A of the lotus-shaped balloon of this invention, where the outer diameter is equal to the outer diameter of the tube.

[0029] Figure 9This is a partial enlarged view of part A when the outer diameter of the lotus-shaped balloon is larger than the outer diameter of the tube. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please refer to Figures 1 to 9 The present invention provides a multi-position catheterization structure, comprising a guide head 4, a lotus balloon 3, and a tube body 1 connected in sequence. The guide head 4 is connected to a guide wire 2, and the end of the guide wire 2 away from the guide head 4 is connected to an operating device 5 for controlling the movement of the guide wire 2 along the tube body 1. The lotus balloon 3 has at least three states, including an initial state with a curvature greater than zero. The operating device 5 is provided with at least three positions that correspond to the three states respectively. Specifically, by pre-forming the lotus balloon 3, the curvature of the lotus balloon 3 in its initial state is greater than zero. That is, the lotus balloon 3 naturally expands slightly outward when not in use. Thus, during the process of the operating device 5 pulling the lotus balloon 3 through the guide wire 2 and the guide head 4 to deform, it can be effectively ensured that the lotus balloon 3 deforms in the direction of increasing curvature. Furthermore, by setting at least three positions on the operating device 5, each position corresponds to a different state of the lotus balloon 3. That is, by switching different positions, the state of the lotus balloon 3 changes synchronously. This allows medical staff to select different positions for operation according to different usage stages, control the degree of deformation of the lotus balloon 3 as needed, effectively avoid the lotus balloon 3 from becoming fixed, and reduce the risks brought about by structural fixation.

[0032] In this invention, the operating device 5 includes an inner tube 51 and an outer operating tube 52. The inner tube 51 and the outer operating tube 52 are slidably connected. The inner tube 51 is connected to the tube body 1 and has at least three slots 511 along its axial direction. The outer operating tube 52 is provided with a buckle 521, which engages with each slot 511 to form at least three positions. The outer operating tube 52 is also provided with a connecting part for fixing the end of the guidewire 2 away from the guide head 4. Specifically, when the outer operating tube 52 is pushed to slide along the inner tube 51, the state of the lotus balloon 3 can be changed sequentially through the connecting part, the guidewire 2, and the guide head 4. At the same time, the buckle 521 can elastically deform to enter or leave the slot 511. When the buckle 521 enters or leaves any slot 511, the elastic deformation of the buckle 521 can improve the sliding feel and facilitate medical staff to identify the corresponding position.

[0033] Preferably, the slot 511 located in the middle position corresponds to the intermediate position, which corresponds to the initial state. This provides an adjustment margin for the lotus balloon 3 to move in the direction of decreasing curvature, so that even if the lotus balloon 3 is shaped to a certain extent, the operating device 5 has enough positions to control the lotus balloon 3 to retract and shrink, thereby effectively reducing the risk caused by the shaping of the lotus balloon 3.

[0034] In this invention, a sliding cover 53 is slidably disposed on the operating outer tube 52 along its axial direction. The sliding cover 53 is provided with an elastic element 57 whose extension and retraction direction is parallel to the axial direction of the operating outer tube 52. The two ends of the elastic element 57 are respectively connected to the sliding cover 53 and the operating outer tube 52, forming a structure that can push the sliding cover 53 to slide until its bottom abuts against the side of the latch 521 away from the slot 511. Specifically, a groove or guide tube can be provided on the operating outer tube 52 to limit the sliding direction and distance of the sliding cover 53; and, as... Figure 3 As shown, when the elastic element 57 extends and pushes the sliding cover 53 until its bottom abuts against the side of the latch 521 away from the slot 511 and the latch 521 engages with the slot 511, the sliding cover 53 presses against the latch 521, preventing the latch 521 from elastically deforming and disengaging from the slot 511, thus limiting its movement and keeping the inner tube 51 and the operating outer tube 52 in an interlocked state. At this time, the operating outer tube 52 cannot slide along the inner tube 51; Figure 4 As shown, when the sliding cover 53 is pushed back, the elastic element 57 is compressed and the bottom of the sliding cover 53 does not abut against the side of the buckle 521 away from the slot 511, at this time, the buckle 521 can undergo elastic deformation and disengage from the slot 511, which plays the role of limiting release, thereby allowing the operating outer tube 52 to slide along the inner tube 51 and switch different gears.

[0035] Preferably, the elastic element 57 is a spring.

[0036] In this invention, the connecting part includes an extension outer tube 54. One end of the extension outer tube 54 is sleeved and connected to the end of the operating outer tube 52 away from the inner tube 51, and the other end of the extension outer tube 54 is sleeved with a fixing ring 55. The end of the guide wire 2 away from the guide head 4 passes through the inner cavity of the tube body 1, the inner tube 51, the operating outer tube 52, and the extension outer tube 54 in sequence and is fixed between the extension outer tube 54 and the fixing ring 55. Specifically, the extension outer tube 54 and the operating outer tube 52 are fixedly sleeved by fastening, bonding, or welding. The end of the guide wire 2 away from the guide head 4 is fixed between the outer side of the extension outer tube 54 and the inner side of the fixing ring 55 by bonding, welding, or clamping the extension outer tube 54 and the fixing ring 55. Thus, when the operating outer tube 52 and the inner tube 51 slide relative to each other, the guide head 4 can be moved sequentially through the extension tube 54, the fixing ring 55, and the guide wire 2, thereby causing the curvature of the lotus balloon 3 to change, allowing the lotus balloon 3 to switch between different states.

[0037] In this invention, a sealing ring 56 is provided between the inner tube 51 and the operating outer tube 52. Specifically, the sealing ring 56 is made of silicone or rubber material, and its two side walls slide against the outer wall of the inner tube 51 and the inner wall of the operating outer tube 52, respectively, which can effectively prevent liquid leakage from occurring during the sliding process between the inner tube 51 and the operating outer tube 52.

[0038] This invention also includes a rear connector 6, on the side of the operating device 5 away from the tube body 1, which is connected to the rear connector 6. Specifically, the rear connector 6 is fixedly connected to the extension outer tube 54 by means of snap-fitting, bonding, or welding, so that the liquid in the tube body 1 can be discharged into the urine bag sequentially through the operating device 5 and the rear connector 6.

[0039] In this invention, the wall thickness of the lotus-shaped sac 3 is greater than the wall thickness of the tube body 1. Specifically, as shown... Figure 7 , Figure 8 and Figure 9 As shown, when the lotus balloon 3 is in the inserted state, the inner diameter of the lotus balloon 3 is smaller than the inner diameter of the tube body 1, and the outer diameter of the lotus balloon 3 is equal to or slightly larger than the outer diameter of the tube body 1, thereby improving the overall rigidity of the lotus balloon 3. At the same time, the connection between the lotus balloon 3 and the tube body 1 is designed with a variable diameter, so that while the lotus balloon 3 is thickened, the tube body 1 still retains a large inner diameter, so that the lotus balloon catheter has both indwelling capacity and urine excretion capacity.

[0040] In this invention, the lotus balloon 3 comprises several strip-shaped bodies 31. The two ends of each strip-shaped body 31 are fixedly connected to the guide head 4 and the tube body 1, respectively, and each strip-shaped body 31 is arranged in a ring around the outside of the guide wire 2. Specifically, the strip-shaped bodies 31 are made of silicone, rubber, or other deformable materials, allowing them to deform synchronously under the traction of the operating device 5. Furthermore, the thickness of the strip-shaped bodies 31 is greater than the wall thickness of the tube body 1, which improves the overall rigidity of the strip-shaped bodies 31 and the lotus balloon 3. This ensures that the strip-shaped bodies 31 have good resistance to deformation under external force or accidental contact or pulling of the catheter structure during use, thus avoiding or reducing the occurrence of the lotus balloon 3 falling off.

[0041] In this invention, the states also include an insertion state and a retention state, and the curvature of the lotus-shaped balloon 3 increases sequentially in the insertion state, the initial state, and the retention state. Specifically, the lotus-shaped balloon 3 corresponding to the slot 511 closest to the tube body 1 is in the insertion state, the lotus-shaped balloon 3 corresponding to the slot 511 located in the middle position is in the initial state, and the lotus-shaped balloon 3 corresponding to the slot 511 farthest from the tube body 1 is in the retention state.

[0042] like Figure 2 , Figure 3 and Figure 4 As shown, the lotus balloon 3 is configured with at least three states. In particular, the curvature of the lotus balloon 3 is greater than zero in the initial state. During use, the lotus balloon 3 changes from the initial state to the insertion state or the indwelling state. Compared with the existing lotus-head catheters that only have two states, closed and open, the lotus balloon 3 has a smaller degree of deformation, which effectively reduces stress fatigue.

[0043] In this invention, the curvature of the lotus-shaped balloon 3 is zero when it is inserted.

[0044] Specifically, when the lotus balloon 3 is in the inserted state, the strip-shaped body 31 is in a straightened shape, and adjacent strip-shaped bodies 31 are closely fitted together, so that the lotus balloon 3 is closed into a hollow tubular structure. At this time, the curvature of the lotus balloon 3 is zero, and its outer diameter is the smallest, which can better insert or remove it from the patient's urethra and reduce the risk of urethral injury. When the lotus balloon 3 is in the indwelling state, the strip-shaped body 31 is in a highly curved shape, and adjacent strip-shaped bodies 31 are separated from each other, so that the lotus balloon 3 opens to form a Malecot-shaped structure. At this time, the curvature of the lotus balloon 3 is the largest, and its outer diameter is the largest, which can well keep the lotus balloon 3 in the bladder and prevent it from slipping out unplanned. When the lotus balloon 3 is in the initial state, the strip-shaped body 31 is in a slightly curved shape, and adjacent strip-shaped bodies 31 are separated from each other, so that the lotus balloon 3 is slightly opened to form a rugby ball-shaped structure.

[0045] When not in use, each strip 31 is slightly bent outward to keep the lotus balloon 3 in a slightly open, rugby ball-shaped initial state. At this time, the buckle 521 is engaged with the slot 511 in the middle position. When inserting or removing the catheter structure, push the sliding cover 53 back until its bottom does not abut against the side of the buckle 521 away from the slot 511. Then push the outer tube 52 forward along the inner tube 51, causing the buckle 521 to disengage from the slot 511 in the middle position and then engage with the slot 511 closest to the tube body 1. During the forward movement of the outer tube 52, the guide head 4 is pushed forward through the extension catheter 54, the fixing ring 55, and the guide wire 2, causing the strip 31 to be straightened. The lotus balloon 3 is thus formed into a tubular structure. The outer diameter of the balloon 3 is the minimum outer diameter, allowing it to pass smoothly through the urethra. When the lotus balloon 3 enters the preset position in the bladder, the outer tube 52 is pushed back to slide along the inner tube 51, causing the buckle 521 to disengage from the slot 511 closest to the tube body 1 and pass over the slot 511 in the middle position until the buckle 521 is engaged in the slot 511 furthest from the tube body 1. During its backward movement, the outer tube 52 is moved backward through the extension catheter 54, the fixing ring 55, and the guide wire 2, causing the guide head 4 to move backward, which causes the strip body 31 to be compressed and bent and expanded radially outward. The lotus balloon 3 deforms and opens to form a Malecot-shaped structure. At this time, the outer diameter of the lotus balloon 3 is the maximum outer diameter, effectively preventing it from detaching from the bladder. Therefore, this invention can effectively ensure that the strip 31 bends in a predetermined direction, ensuring that the lotus balloon 3 can be transformed into a Malecot-shaped placement form, and can be pulled into a tubular insertion state by the guide wire 2, reducing the risk of structural fixation of the lotus balloon 3.

[0046] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A multi-position catheterization structure, comprising a guide head (4), a lotus balloon (3), and a tubing (1) connected in sequence, wherein the guide head (4) is connected to a guide wire (2), and an operating device (5) for controlling the movement of the guide wire (2) along the tubing (1) is connected to one end of the guide wire (2) away from the guide head (4); characterized in that: The lotus-shaped balloon (3) has at least three states, including an initial state with a curvature greater than zero; and the operating device (5) is provided with at least three positions that correspond to the three states respectively. The operating device (5) includes an inner tube (51) and an operating outer tube (52). The inner tube (51) and the operating outer tube (52) are slidably connected. The inner tube (51) is connected to the tube body (1) and has at least three slots (511) along its axial direction. The operating outer tube (52) is provided with a buckle (521). The buckle (521) and each slot (511) are engaged to form at least three positions. The operating outer tube (52) is provided with a connecting part for fixing the end of the guide wire (2) away from the guide head (4).

2. The multi-position catheterization structure according to claim 1, characterized in that: A sliding cover (53) is slidably disposed on the operating outer tube (52) along its axial direction. An elastic element (57) with a telescopic direction parallel to the axial direction of the operating outer tube (52) is disposed on the sliding cover (53). The two ends of the elastic element (57) are respectively connected to the sliding cover (53) and the operating outer tube (52) to form a structure that can push the sliding cover (53) to slide to the bottom of the sliding cover (53) and abut against the side of the buckle (521) away from the slot (511).

3. A multi-position catheterization structure according to claim 1 or 2, characterized in that: The connecting part includes an extension tube (54), one end of which is connected to the end of the operating tube (52) away from the inner tube (51), and the other end of the extension tube (54) is fitted with a fixing ring (55). The end of the guide wire (2) away from the guide head (4) passes through the inner cavity of the tube body (1), the inner tube (51), the operating tube (52), and the extension tube (54) in sequence and is fixed between the extension tube (54) and the fixing ring (55).

4. A multi-position catheterization structure according to claim 1 or 2, characterized in that: A sealing ring (56) is provided between the inner tube (51) and the operating outer tube (52).

5. A multi-position catheterization structure according to any one of claims 1 to 2, characterized in that: It also includes a rear connector (6), on the side of the operating device (5) away from the pipe body (1) connected to the rear connector (6).

6. A multi-position catheterization structure according to any one of claims 1 to 2, characterized in that: The wall thickness of the lotus bulb (3) is greater than the wall thickness of the tube (1).

7. A multi-position catheterization structure according to any one of claims 1 to 2, characterized in that: The lotus balloon (3) includes several strips (31), the two ends of which are fixedly connected to the guide head (4) and the tube (1) respectively, and each strip (31) is arranged in a ring on the outside of the guide wire (2).

8. The multi-position catheterization structure according to claim 7, characterized in that: The states also include the insertion state and the retention state, and the curvature of the lotus balloon (3) increases sequentially in the insertion state, the initial state, and the retention state.

9. A multi-position catheterization structure according to claim 8, characterized in that: The curvature of the lotus bulb (3) is zero in the inserted state.

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