CN108066883A - A kind of catheter - Google Patents

Abstract

The invention provides a urinary catheter, comprising a closed top of the bladder end, a water bag, a urine drainage pipe, a flushing pipe, a water bag water injection pipe, a catheter tail, an annular flushing structure and a side wall of the annular flushing structure The micropores, connecting head and funnel-shaped interface of the urinary catheter are not communicated with each other and are respectively provided with inlets and outlets. The annular flushing structure divides the urinary catheter into two diameters, forming a gap between the catheter and the urethra, which can effectively drain and flush the secretions after urethral surgery; the side wall of the annular flushing structure is equipped with Microholes parallel to the catheter axis with an angle less than 90° can reduce further damage to the urethral suture; the connection port and the funnel-shaped interface are detachable structures, and the connector and the funnel-shaped interface can be disassembled when flushing is not required down to reduce the burden on patients; the interface of each pipeline is arranged in a dislocation shape to reduce misoperation.

Description

a urinary catheter

technical field

The invention relates to the field of medical auxiliary devices, in particular to a urinary catheter for drainage and flushing of secretions after urethral operations.

Background technique

Urinary catheterization is one of the commonly used medical procedures in clinic, and it needs to be used in many cases. Urinary catheters are often used to collect urine and drain urine, especially in urology after urethral surgery, and are widely used. After urethral surgery, patients often need to keep the catheter for about 3 weeks, and during this period is also the stage when secretions from the urethral wall accumulate after surgery. Invention patent (CN 103263719 A) discloses a urethral flushing catheter, which has a drainage cavity inside the structure and a balloon on the catheter. Flow, if the secretion is more viscous, it is easier to stagnate and accumulate. The enzymes in the secretion will further break down the outer tissue and cause damage, and at the same time, it is easy to cause infection, and the infection spreads further, which can cause retrograde urinary tract infection. If the secretions accumulate too much, the pressure between the catheter and the urethra will increase, which may lead to oppressive occlusion of the catheter, thereby causing urinary retention, with serious consequences. Although the above-mentioned invention is provided with flushing microholes on the tube wall in the middle part of the urinary catheter, flushing is performed perpendicular to the urethral tube wall during flushing. Flushing cannot control the outflow direction of urethral secretions, but may cause secretions to accumulate deep in the urethra.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides a urinary catheter, which innovatively adopts a pipe diameter reduction design and non-vertical flushing micropores, respectively achieving the effects of sufficient flushing of urethral secretions and no damage.

Its technical scheme is as follows:

A urinary catheter, comprising a closed top of the bladder end, a water bag, a urine drainage pipe, a flushing pipe, a water bag water injection pipe, and a catheter tail. There are entrances and exits, wherein the entrance of the urine drainage pipe is located on the side wall below the sealed top of the bladder end, the outlet is located at the tail end of the catheter, the outlet of the irrigation pipe is located on the side wall below the closed top of the bladder end, and the water bag is located at the outlet of the irrigation pipe And below the entrance of the urine drainage pipe, water is injected into the water bag through the water bag water injection inlet arranged on the outer wall of the catheter to communicate with the water bag water injection pipe, and an annular flushing structure is arranged below the water bag and on the side wall of the annular flushing structure Microholes, the annular irrigation structure divides the catheter into tubes with two diameters, of which the diameter near the bladder end is larger than the diameter of the urethral tube; the annular irrigation structure communicates with the irrigation pipeline, and the micropores on the side wall of the annular irrigation structure The included angle with parallel to the catheter axis is less than 90°.

Further, the tail end of the urinary catheter includes a detachable connector and a funnel-shaped interface, the connector is a hollow pipe, one end communicates with the urine drainage pipeline, and the other end communicates with the funnel-shaped interface; the funnel-shaped interface includes an inner layer interface and The outer layer interface, the urine drainage outlet and the flushing liquid inlet, specifically, the urine drainage outlet is connected to the urine drainage pipe through the connector, the flushing liquid inlet is connected to the flushing pipe, and the connector is connected to the inner layer interface in the funnel-shaped interface , the flushing pipeline communicates with the outer interface.

Further, the water injection inlet and/or the flushing liquid inlet of the water bag are provided with two single valves.

Further, the connecting head is a shuttle-shaped hollow pipe.

Further, the entrance of the urine drainage pipeline is set at a distance of 1.5-2.5mm from the top of the bladder end.

Further, the outlet of the flushing pipeline is set at a distance of 4.5-5.5mm from the top of the bladder end.

Further, the water bladder is set at a distance of 7.5-8.5mm from the top of the bladder end.

Further, the annular flushing structure is set at a distance of 14.5-15.5mm from the top of the bladder end.

Further, the airtight top of the bladder end is semicircular or oval.

The beneficial effects are:

1. The catheter tube body provided by the present invention adopts variable-diameter design, the tube diameter inserted into the bladder part is large, and the tube diameter inserted into the urethra is small, so that a certain gap is provided between the catheter tube body and the urethral wall, and there is Facilitate the discharge of secretions.

2. The side wall of the annular flushing structure of the catheter of the present invention is provided with evenly distributed micropores, and the angle between it and the axis parallel to the catheter body is less than 90°: on the one hand, it can make the medicinal liquid flow from the deepest part of the urethra Circular flushing toward the outer opening of the urethra prevents secretions from accumulating deep into the urethra. On the other hand, the circular oblique flushing direction lengthens the flushing distance, which can avoid damage to the urethral suture due to excessive vertical flushing pressure.

3. The present invention can perform bladder flushing and urethral flushing at the same time. In the present invention, the bladder flushing channel and the urethral flushing channel are the same channel. When the bladder flushing is performed, only when the flushing pressure is very high, the flushing liquid is flushed out through the micropores on the side wall of the annular flushing structure and decompressed, leaving The irrigating fluid can continue to perform bladder irrigation under the condition of reduced pressure. At this time, the flushing liquid flushed out from the side wall of the annular flushing structure of the urethra has a relatively high pressure, and rushing directly to the repaired urethral wall will cause further damage to the urethra at the repaired site. Pressure, so as to avoid the adverse consequences of direct flushing.

4. The present invention adopts the design of connecting head and double-layer funnel-shaped interface, which can perform urethral flushing operation without affecting urine drainage. The connecting device can effectively close the concentric double chambers, separate the inner and outer chambers, and then exercise their Function; when the liquid medicine is not needed for flushing, the connector and the funnel-shaped interface can be easily disassembled, which reduces the physical burden on the patient.

5. The pipe joints of the catheter of the present invention are arranged in a dislocation manner, which reduces the medical operation errors caused by the traditional catheters using side-by-side three-pronged or four-pronged ports.

Description of drawings

Figure 1: Schematic diagram of the structure of the urethra after urethral surgery;

Fig. 2: is the structure schematic diagram of urinary catheter of the present invention;

Fig. 3: It is the structural schematic diagram that the urinary catheter of the present invention is installed in the urethra after urethral surgery;

Fig. 4: is the schematic diagram of the annular flushing structure of the urinary catheter of the present invention;

Fig. 5: is the schematic diagram of the structure of the posterior segment of the urinary catheter body of the present invention;

Fig. 6: is the schematic diagram of the cross-sectional structure of the posterior section of the urinary catheter body of the present invention;

Fig. 7: is the schematic diagram of the cross-sectional structure of the annular flushing structure of the catheter of the present invention;

Fig. 8 is a schematic diagram of the cross-sectional structure of the middle section of the catheter body of the present invention;

Fig. 9: is the schematic diagram of the structure of the catheter connector of the present invention;

Fig. 10: is the schematic diagram of the funnel-shaped interface of the catheter of the present invention;

Fig. 11 is a schematic diagram of the cross-sectional structure of the rear section of the urinary catheter body, the connector and the funnel-shaped interface of the present invention.

In the figure: 1-closed top of bladder end; 2-water bag; 3-urine drainage pipe; 4-flushing pipe; 5-water bag water injection pipe; Microhole; 9-connector; 10-funnel-shaped interface; 11-inner layer interface; 12-outer layer interface; 13-urine drainage outlet; 14-rinsing fluid inlet; 15-water bag water injection inlet

Specific implementation method

Referring to Fig. 1 to Fig. 10, a urinary catheter of the present invention includes a closed top 1 at the bladder end, a water bag 2, a urine drainage pipe 3, a flushing pipe 4, a water bag water injection pipe 5, and a urinary catheter tail end 6, The pipes on the urinary catheter are not connected to each other and are respectively provided with inlets and outlets, wherein the entrance of the urine drainage pipe 3 is located on the side wall below the airtight top 1 of the bladder end, the outlet is located at the tail end 6 of the catheter, and the flushing pipe 4 The outlet is located on the side wall below the airtight top 1 of the bladder end, the water bag 2 is located below the outlet of the flushing pipe 4 and the inlet of the urine drainage pipe 3, and the water is connected to the water bag water injection pipe through the water bag water inlet 15 arranged on the outer wall of the catheter 5 is injected into the water bag 2, and an annular flushing structure 7 and a microhole 8 arranged on the side wall of the annular flushing structure are arranged under the water bag 2, and the annular flushing structure 7 divides the catheter into two kinds of diameters , wherein the diameter near the end of the bladder is larger than the diameter of the urethral tube, and the annular flushing structure 7 communicates with the flushing tube 4; the design of the variable diameter can make a certain gap between the catheter tube body and the urethral wall, which is conducive to the discharge of secretions discharge.

The included angle between the microhole 8 on the side wall of the annular flushing structure 7 of the catheter of the present invention and the axis parallel to the catheter is smaller than 90°. On the one hand, the medicine liquid can be circularly flushed from the deepest part of the urethra to the outer opening of the urethra to prevent secretions from accumulating deep into the urethra; Injury to the urethral suture.

The catheter tail end 6 of the present invention comprises a detachable connector 9 and a funnel-shaped interface 10, the connector 9 is a hollow pipe, one end communicates with the urine drainage pipeline 3, and the other end communicates with the funnel-shaped interface 10; the funnel-shaped interface 10 includes an inner layer interface 11 and an outer layer interface 12, a urine drainage outlet 13 and a flushing liquid inlet 14, the urine drainage outlet 13 communicates with the urine drainage pipe 3 through the connector 9, and the flushing liquid inlet 14 communicates with the flushing pipe 4, The connecting head 9 communicates with the inner layer interface 11 in the funnel-shaped interface 10 , and the flushing pipe 4 communicates with the outer layer interface 12 . The design of the connector and the double-layer funnel-shaped interface can perform urethral irrigation without affecting the drainage of urine. The connection device can effectively seal the concentric double chambers, separate the inner and outer chambers, and then perform their respective functions; When flushing with liquid medicine is required, the connector and the funnel-shaped interface can be easily disassembled, reducing the physical burden on the patient.

The outer wall of the urinary catheter of the present invention is provided with a water bag water injection inlet 15, which is located above the catheter tail end 6, and the funnel-shaped interface 10 is respectively provided with a urine drainage outlet 13 and a flushing liquid inlet 14, and each pipeline interface adopts a staggered layout , which can reduce the medical operation errors caused by the traditional catheter with three or four prongs side by side.

The water bag water injection inlet 15 and the flushing liquid inlet 14 of the urinary catheter of the present invention are provided with two single valves, which can effectively inject liquid and prevent the liquid from flowing out.

The airtight top 1 of the bladder end of the urinary catheter of the present invention can be designed as a semicircle or an ellipse as required.

During use, the patient inserts most of the catheter from the external opening of the urethra into the bladder under aseptic operation, connects the urine collection bag directly to the end of the catheter, and uses a syringe to connect the water bag to inject water after seeing the urine flow out The inlet 15 injects about 12 mL of normal saline into the water bag 2 to expand the water bag, and pulls the catheter outwards. If it cannot be pulled out, the catheter is fixed and urine drainage can be performed. When flushing bladder and urethral wall secretions, first insert one end of the connector 9 into the urine drainage pipe 3, and the other end into the inner layer interface 11, and at the same time insert the flushing pipe 4 into the outer layer interface 12 to maintain a tight fit. The urine collection bag is connected to the urine drainage outlet 13, and a syringe is used to inject flushing liquid from the flushing liquid inlet 14 to perform a urethral wall flushing operation, thereby realizing flushing and catheterization at the same time.

When flushing is not required, remove the funnel-shaped interface and connector, and connect the urine collection bag to the drainage end.

Those of ordinary skill in the art can understand that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, It can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. a kind of catheter, including the closed top in bladder end (1), water pocket (2), urine drainage pipeline (3), flushing pipe (4), water Capsule filling pipe (5), catheter tail end (6), each pipeline on the catheter is not connected and is each provided with entrance, Middle urine drainage pipeline (3) entrance is located on the side wall below the closed top in bladder end (1), and outlet is located at catheter tail end (6) Place, the outlet of flushing pipe (4) are located on the side wall below the closed top in bladder end (1), and water pocket (2) is located at flushing pipe (4) Outlet and the lower section of urine drainage pipeline (3) entrance, water are connected by being arranged on the water pocket water filling inlet (15) of urethral catheterization pipe outer wall In water pocket filling pipe (5) injection water pocket (2), it is characterised in that：Annular flushing mechanism (7) is equipped with below water pocket (2) and is set Catheter has been divided into the pipe of two kinds of diameters by the micropore (8) on annular flushing mechanism side wall, the annular flushing mechanism (7) Body, wherein the diameter close to bladder end is more than the diameter in urethra tube；The annular flushing mechanism (7) connects with flushing pipe (4) It is logical, micropore (8) on annular flushing mechanism (7) side wall with parallel to the angle between catheter axis less than 90 °.

2. catheter as described in claim 1, it is characterised in that：The catheter tail end (6) includes removable connector (9) With funnel-form interface (10), the connector (9) is a hollow pipe, and one end connects with urine drainage pipeline (3), the other end and Funnel-form interface (10) connects；The funnel-form interface (10), including interior layer interface (11) and outer layer interface (12), urine drainage (13) and flushing liquor entrance (14) are exported, urine drainage outlet (13) is connected by connector (9) with urine drainage pipeline (3), Flushing liquor entrance (14) is connected with flushing pipe (4), and connector (9) connects with the interior layer interface (11) in funnel-form interface (10) Logical, flushing pipe (4) is connected with outer layer interface (12).

3. catheter as claimed in claim 2, it is characterised in that：The water pocket water filling inlet (15) and/or flushing liquor entrance (14) it is equipped with two panels individual event flap valve.

4. the catheter as described in claims 1 to 3 any one, it is characterised in that：The connector (9) is hollow for a shuttle-type Pipeline.

5. the catheter as described in claims 1 to 3 any one, it is characterised in that：The entrance of the urine drainage pipeline (3) It is located at the closed top in bladder end (1) 1.5-2.5mm.

6. the catheter as described in claims 1 to 3 any one, it is characterised in that：The outlet of the flushing pipe (4) is located at At the closed top in bladder end (1) 4.5-5.5mm.

7. the catheter as described in claims 1 to 3 any one, it is characterised in that：The water pocket (2) is located at apart from bladder end At closed top (1) 7.5-8.5mm.

8. the catheter as described in claims 1 to 3 any one, it is characterised in that：It is described annular flushing mechanism (7) be located at away from At the closed top in bladder end (1) 14.5-15.5mm.

9. the catheter as described in claims 1 to 3 any one, it is characterised in that：The closed top in bladder end (1) is half Circular, ellipse.