Catheterization Dilator

Abstract

A urinary catheter dilator comprises: an outer channel unit and an inner expansion unit; the outer channel unit comprises a retractable mesh pipe, the front end of the mesh pipe comprises a ball, and the rear end of the mesh pipe forms a trumpet-shaped opening; the mesh pipe is formed by crossing a plurality of first spirals formed by rotating in a clockwise direction and a plurality of second spirals formed by rotating in a counterclockwise direction; wherein at least one of the plurality of first spirals and the plurality of second spirals is made of elastic metal; the diameter of the retracted mesh pipe is smaller than the diameter of the ball; the inner expansion unit comprises a rod body made of elastic metal and easy to bend elastically, the front end of the rod body forms a cylindrical expansion head, and the two ends of the expansion head form arc surfaces; the diameter of the expansion head is much larger than the diameter of the rod body and the ball; the inner expansion unit can be inserted into the mesh pipe from the trumpet-shaped opening at the rear end of the mesh pipe.

Description

Technical Field

[0001] The present application relates to a medical device, and in particular to a urinary catheter dilator. Background Art

[0002] The urethral probe 30 is often used to dilate the urethra, especially for patients with difficulty urinating due to prostatic hypertrophy. Before inserting a catheter, it is usually necessary to insert the urethra of the male patient into the urethra to dilate it, and then the catheter can be easily inserted into it. The urethral probe is a steel rod with a curved front end. Due to the physiological curvature of the human urethra, it is difficult to insert the urethral probe. The inner mucosa of the urethra is often damaged by the urethral probe, or even Figure 7 That pierces the urethra. Summary of the invention

[0003] In view of the above problems, the present application aims to propose a urinary catheter dilator, which is used for urethral dilation and can flexibly adapt to the physiological curve of the urethra on the one hand, and is not easy to cause damage to the inner mucosa of the urethra on the other hand.

[0004] The urinary catheter dilator of the present application comprises: an outer channel unit and an inner dilation unit;

[0005] The outer channel unit comprises a retractable mesh pipe, the front end of the mesh pipe comprises a sphere, and the rear end of the mesh pipe forms a trumpet-shaped opening; the mesh pipe is formed by crossing a plurality of first spirals formed by rotating clockwise and a plurality of second spirals formed by rotating counterclockwise; wherein at least one of the plurality of first spirals and the plurality of second spirals is made of elastic metal; the diameter of the retracted mesh pipe is smaller than the diameter of the sphere;

[0006] The inner expansion unit comprises a rod body made of elastic metal and easy to bend elastically, the front end of the rod body forms a cylindrical expansion head, and the two ends of the expansion head form arc surfaces; the diameter of the expansion head is much larger than the diameter of the rod body and the sphere;

[0007] The inner expansion unit can be inserted into the mesh pipe from the trumpet-shaped opening at the rear end of the mesh pipe.

[0008] Preferably, a portion of the front section surrounding the mesh tube is covered with a silicone membrane, corresponding to the position of the patient's prostate.

[0009] Preferably, the rod body is formed with scales to indicate the depth of insertion into the patient's urethra.

[0010] Preferably, a handle is formed at the rear end of the rod body.

[0011] Preferably, the outer side of the outer channel unit is coated with lidocaine gel.

[0012] Preferably, at least one of the plurality of first spirals is made of elastic metal; and at least one of the plurality of second spirals is made of elastic metal.

[0013] The catheter dilator of the present application is designed as an outer channel unit and an inner expansion unit, and the traditional urethral probe is decomposed into two parts according to its functions of entering the urethra and expanding the prostate. In this way, when inserted into the urethra, the outer channel unit is easily inserted into the urethra because of its small diameter and does not stretch the prostate; after the outer channel unit is inserted into the urethra, the inner expansion unit is inserted into the outer channel unit. At this time, due to the existence of the mesh pipe of the outer channel unit, the expansion head of the inner expansion unit moves in the mesh pipe, and the mesh pipe protects the urethral mucosa; the mesh pipe of the outer channel unit and the rod body made of elastic metal of the inner expansion unit make the entire catheter dilator easily adapt to the physiological curve of the urethra. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a first embodiment of an outer channel unit of a urinary catheter dilator of the present application;

[0015] Figure 2 It is a structural schematic diagram of a second embodiment of the outer channel unit of the urinary catheter dilator of the present application;

[0016] Figure 3 This is a schematic structural diagram of the inner expansion unit of the urinary catheter dilator of the present application;

[0017] Figure 4 for Figure 1 Insert the outer channel unit Figure 3 Schematic diagram of the inner expansion unit;

[0018] Figure 5 for Figure 2 Insert the outer channel unit Figure 3 Schematic diagram of the inner expansion unit;

[0019] Figure 6 It is a schematic diagram of the cross-sectional structure after the inner expansion unit is inserted into the outer channel unit;

[0020] Figure 7 This is a schematic diagram of a urethral sound according to the prior art after being inserted into the urethra of a male patient. DETAILED DESCRIPTION

[0021] The urinary catheter dilator of the present application is described in detail below with reference to the accompanying drawings.

[0022] The urinary catheter dilator of the present application comprises: an outer channel unit 10 and an inner dilation unit 20;

[0023] The outer channel unit 10 includes a retractable mesh pipe 12, the front end of the mesh pipe 12 includes a ball 11, and the rear end of the mesh pipe 12 forms a trumpet-shaped opening 13; the mesh pipe 12 is formed by crossing a plurality of first spirals formed by rotating in a clockwise direction and a plurality of second spirals formed by rotating in a counterclockwise direction; the first spiral can be woven together with the second spiral, or can be formed by memory metal laser engraving.

[0024] In order to facilitate the insertion of the outer channel unit 10 into the urethra, at least one of the plurality of first spirals and the second spirals is made of metal; preferably, at least one of the first spirals is made of elastic metal, and at least one of the second spirals is made of elastic metal; the diameter of the contracted mesh tube 12 is smaller than the diameter of the ball 11. The ball 11 can be made of metal and fixed integrally with the first spiral or the second spiral of metal.

[0025] The inner expansion unit 20 includes a rod body 22 made of elastic metal that is easy to bend elastically. The front end of the rod body 22 forms a cylindrical expansion head 21, and the two ends of the expansion head 21 form arc surfaces; the diameter of the expansion head 21 is much larger than the diameter of the rod body 22 and the ball 11, and the expansion head 21 is used to expand the prostate position of the urethra.

[0026] The inner expansion unit 20 can be inserted into the mesh tube 12 from the trumpet-shaped opening 13 at the rear end of the mesh tube 12 .

[0027] A portion of the front section surrounding the mesh pipe 12 is covered with a silicone film 14, such as Figure 2 As shown, the silicone mold is preferably formed on the outside of the mesh tube, corresponding to the position of the patient's prostate, to prevent the urethral mucosa from entering the mesh tube through the window formed by the intersection of the first spiral and the second spiral due to prostate hypertrophy at the prostate position, and being damaged by expansion when the expansion head is in progress.

[0028] A scale is formed on the rod body 22 to indicate the insertion depth of the patient's urethra, so that the operator can clearly understand the insertion depth of the dilation head 21 and judge whether the dilation head 21 has reached the position corresponding to the prostate. If it has reached the position, the dilation head 21 will stay there and implement long-term support and dilation at that place.

[0029] A handle 23 is formed at the rear end of the rod body 22 to facilitate pushing in and pulling out the inner expansion unit 20 .

[0030] The outer side of the outer channel unit 10 is coated with lidocaine gel, which has a lubricating effect on the one hand and an anesthetic effect on the other hand.

[0031] When in use, first insert the external channel unit into the urethra from the patient's urethral opening until the ball enters the bladder; then insert the internal expansion unit from the trumpet mouth of the external channel unit, so that the expansion head stays at the position of the prostate in the urethra to support and expand the area. After a predetermined period of time, first withdraw the internal expansion unit, and then withdraw the external channel unit. After withdrawing the external channel unit, insert the catheter into the patient's urethra.

Claims

1. A urinary catheter dilator, characterized in that include: an outer channel unit and an inner expansion unit; The outer channel unit comprises a retractable mesh pipe, the front end of the mesh pipe comprises a sphere, and the rear end of the mesh pipe forms a trumpet-shaped opening; the mesh pipe is formed by crossing a plurality of first spirals formed by rotating clockwise and a plurality of second spirals formed by rotating counterclockwise; wherein at least one of the plurality of first spirals and the plurality of second spirals is made of elastic metal; the diameter of the retracted mesh pipe is smaller than the diameter of the sphere; The inner expansion unit comprises a rod body made of elastic metal and easy to bend elastically, the front end of the rod body forms a cylindrical expansion head, and the two ends of the expansion head form arc surfaces; the diameter of the expansion head is larger than the diameter of the rod body and the sphere; The inner expansion unit can be inserted into the mesh pipe from the trumpet-shaped opening at the rear end of the mesh pipe; A portion of the anterior segment of the surrounding mesh tube, covered with a silicone membrane, corresponds to the location of the patient's prostate; The rod body is formed with scales to indicate the depth of insertion into the patient's urethra.

2. The urinary catheter dilator according to claim 1, characterized in that: A handle is formed at the rear end of the rod body.

3. The urinary catheter dilator according to claim 1, characterized in that: The outer side of the outer channel unit is coated with lidocaine gel.

4. The urinary catheter dilator according to claim 1, characterized in that: At least one of the plurality of first spirals is made of elastic metal; at least one of the plurality of second spirals is made of elastic metal.

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