CN111956938A

CN111956938A - Practical catheter

Info

Publication number: CN111956938A
Application number: CN202010997864.0A
Authority: CN
Inventors: 王军; 张敏; 王思懿; 邓治林; 付正伟; 余彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2020-11-20

Abstract

The invention belongs to the technical field of medical instruments, solves the technical problem that drainage holes are easy to block during bladder flushing in the prior art, and provides a practical catheter which comprises a catheter body, a balloon arranged on the catheter body, a drainage tube connector and a balloon connector, wherein the drainage tube connector and the balloon connector are connected with the catheter body, a balloon channel is communicated between the balloon and the balloon connector, a drainage cavity channel is communicated between the drainage tube connector and the catheter body, the head of the catheter body is a conical head, the tip of the conical head is provided with a guide wire channel along the axis of the conical head, the guide wire channel is communicated with the drainage cavity channel, three drainage holes are formed in the catheter body between the head of the catheter body and the balloon, and the three drainage holes are spirally arranged on the catheter body from top to bottom. The practical urinary catheter disclosed by the invention is matched with a common guide wire, has the advantages of solving the problem of difficult catheterization of the common urinary catheter and preventing the blockage of the drainage hole, and increases the flushing effect of bladder flushing.

Description

Practical catheter

Technical Field

The invention relates to the technical field of medical instruments, in particular to a practical catheter.

Background

Clinically, most of the prior urinary catheters are ordinary silica gel urinary catheters, and for patients with urinary retention, prostatic hypertrophy, bladder neck obstruction and mild urethral stricture, the urinary catheterizing difficulty and even the urinary catheterizing failure often occur, so that the patients can face the possibility of a bladder fistulization operation, and patients need to carry the urinary catheters on the abdominal walls for a long time after fistulization, thereby bringing serious injury and inconvenience in life to the patients. The drainage hole of the common catheter is easy to be blocked, and the drainage effect of the urinary catheter is influenced. The effect is poor in the bladder irrigation operation, the irrigation is difficult, and even the possibility of removing blood clots in the bladder incision operation exists.

Disclosure of Invention

The embodiment of the invention provides a practical catheter, which solves the technical problem that a drainage hole is easy to block when a bladder is washed.

The invention provides a practical catheter, which comprises a catheter body, a balloon arranged on the catheter body, a drainage pipe joint and a balloon joint, wherein the drainage pipe joint and the balloon joint are connected with the catheter body, a balloon channel is communicated between the balloon and the balloon joint, a drainage cavity channel is communicated between the drainage pipe joint and the catheter body, the head of the catheter body is a conical head, the tip of the conical head is provided with a guide wire channel along the axis of the conical head, the guide wire channel is communicated with the drainage cavity channel, three drainage holes are arranged on the catheter body between the head of the catheter body and the balloon, the three drainage holes are spirally arranged on the catheter body from top to bottom, the opening widths of the three drainage holes all account for at least one sixth of the length of the outer diameter of the catheter body, and a reinforcing bone for increasing the hardness of the catheter body is arranged between the three drainage holes.

The working principle and the process are as follows:

at present, most of drainage holes of common clinical catheters are symmetrical holes, when the symmetrical urination holes are blocked by unilateral holes or blood clots are attached, the water outlet direction of flushing is opposite to the blocking direction, the flushing effect is poor, the practical urinary catheter realizes 360-degree flushing without dead angle direction through the arrangement of three spirally arranged drainage holes, the hole opening direction is spiral, the flushing force and the flushing effect on the bladder inner cavity are enhanced, the problem that the drainage holes are easy to block is solved, meanwhile, the arrangement of bones is enhanced, the hardness of the urinary catheter is ensured, the 360-degree spiral flushing effect is favorably ensured, a special guide wire channel for the guide wire to pass through is arranged in the inner core of the catheter body, the channel can pass through the common clinical guide wire at present, the common clinical guide wire comprises a zebra guide wire, a loach guide wire, a rigid guide wire and the like, thereby effectively reducing the difficulty of guiding urine, as long as the guide wire can smoothly enter the bladder, the utility catheter can be pushed into the bladder along the guide wire by utilizing the guide wire channel, and finally the guide wire is drawn out from the drainage tube joint. The external drainage device is connected, and the catheterization is successful.

Preferably, the tip of conical head is the arcwall face, prevents that the conical head is too sharp-pointed injury human body.

Preferably, the balloon channel is located within a sidewall of the catheter body.

So set up for sacculus passageway and drainage chamber way do not influence each other.

Preferably, strengthen the bone and be located the internal layer of pipe, be located the clearance in adjacent drainage hole, the skin of the pipe body comprises silica gel, it is excessive to the side opening of the pipe body below that the reinforcing bone is the heliciform by the cone, and the taper is gradually become thin, is replaced by outer silica gel gradually, strengthen the hard plastic material of bone and make.

So set up, the reinforcing bone plays the effect that supports the enhancement to the pipe body, and the heliciform extends to the conical head simultaneously, is hopper-shaped with the conical head and dwindles gradually to pipe body point portion, forms a part of seal wire channel.

Preferably, an anti-backflow piston is arranged in the balloon joint.

Air or liquid passes through the balloon in one direction, backflow and liquid leakage are prevented, air leakage is avoided, after the balloon is filled with water and expanded, the balloon connector is blocked through the backflow-preventing piston, the balloon keeps an expanded state, and the balloon is clamped above the opening of the bladder neck to play a role in fixing the catheter body and preventing falling. The maximum volume of the balloon is 50 ml.

Preferably, the drainage pipe joint is internally provided with an annular groove with a reverse opening, and the depth of the annular groove is about 0.5 cm.

The arrangement of the annular groove facilitates the connection of the drainage tube joint and the drainage bag, strengthens the joint point of the drainage bag and the flusher, can resist large reverse tension and prevent the urine bag from falling off.

Preferably, the edge of the tail end of the drainage tube joint is provided with an elastic ring.

The elastic ring reinforces the joint point with the drainage bag and the irrigator, tightens up the force application point at the tail end, and can resist larger reverse tension by the resistance at the tail end of the joint, so that the elastic ring can resist larger impulsive force without rushing out the ureter and prevent urine from splashing when the bladder is irrigated.

Preferably, the backflow-preventing piston comprises an elastic rubber ring and a hollow balloon plug with an annular bulge, the balloon plug is sleeved inside the balloon joint, and the elastic rubber ring is sleeved outside the balloon joint.

Annular protruding on the sacculus stopper can connect the inside with sacculus stopper card, connects sacculus stopper and sacculus firmly through elastic rubber ring, the rubber ring plays the fixed stopper effect of continuous pressurization, prevents liquid, and gaseous palirrhea is revealed. The anti-reflux effect is ensured.

Preferably, the inner diameter of the drainage cavity is 2.5mm-5mm, and the model of the catheter body is 12-26.

The inner diameter of the drainage cavity is within the range of 2.5mm-5mm, catheter bodies of different models can be selected according to requirements, and the inner diameter of the drainage cavity is gradually increased along with the increase of the model of the catheter body.

Preferably, the surface of the catheter body is coated with a hydrophilic lubricious coating.

The hydrophilic lubricating coating is very smooth when meeting water, so that a lubricating oil sleeve in a common urethral catheterization package is saved, the use cost is saved, and the medical resources are saved.

In conclusion, the beneficial effects of the invention are as follows:

1. practical ureter heart has the dedicated passage that can supply the seal wire to pass through, thereby the problem of difficult nature catheterization operation has been solved clinically, the current clinical common seal wire of this passageway accessible, including the zebra seal wire, the loach seal wire, rigidity seal wire etc., thereby the degree of difficulty of catheterization has effectively been reduced, as long as the seal wire can get into the bladder smoothly, just can utilize practical ureter to push it bladder along the seal wire with the seal wire passageway, to there being narrow or urethral of obstruction, can be with the help of the assistance of disposable multi-functional urethra bougie, guarantee the seal wire and can put into the bladder, then practical ureter just can utilize the seal wire passageway to push it bladder in the same direction as the seal wire easily, take the seal wire out from drainage tube joint department at last, external drainage device, the catheterization is successful.

2. The utility model discloses a duct urine afterbody street is through the design of specialty, has designed the beaded finish that is rich in elasticity and reverse bellied ring channel, has consolidated the binding site with drainage bag and flusher, can resist great impulsive force and do not dash and take off the ureter.

3. Be located urine drainage hole total 3 between ureter point portion and the sacculus, point portion top-down is the heliciform along the catheter and arranges the round around the pipe diameter, and the opening direction is the spiral, 2 symmetry urination trompils of more ordinary ureter are compared, there is absolute advantage in the aspect of the bladder washes, symmetry urination trompil has unilateral trompil to block up or when the clot adheres to, the play water direction of washing by water is different in the direction of blocking up, washing effect is poor, and 360 no dead angles in practicality ureter bath direction, and the trompil direction is the heliciform, prevent the ureter jam, the washing dynamics and the washing effect to the bladder have been strengthened.

4. The surface of the body part of the practical urinary catheter is coated with the hydrophilic lubricating coating, so that the lubricating oil suit in the middle of the common urethral catheterization package is saved, the use cost is saved, and the medical resources are saved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, without any creative effort, other drawings may be obtained according to the drawings, and these drawings are all within the protection scope of the present invention.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of a portion of the present invention;

FIG. 3 is a cross-sectional view of the connection of the drain of the present invention;

FIG. 4 is a front cross-sectional view of FIG. 2;

FIG. 5 is a cross-sectional view A-A of FIG. 1;

fig. 6 is a cross-sectional view of B-B in fig. 2.

Parts and numbering in the drawings: 1. a catheter body; 2. a balloon; 3. a conical head; 4. a balloon joint; 5. a balloon channel; 6. a drainage tube joint; 7. an elastic ring; 8. an elastic rubber ring; 9. a balloon stopper; 10. a hydrophilic lubricious coating; 11. a drainage hole; 12. strengthening bones; 13. a guidewire channel; 14. an annular groove; 15. drainage cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In case of conflict, the various features of the present disclosure and examples may be combined with each other and are within the scope of the present disclosure.

Example 1:

as shown in fig. 1-6, a practical catheter comprises a catheter body 1, a balloon 2 disposed on the catheter body 1, and a drainage tube connector 6 and a balloon connector 4 connected to the catheter body 1, wherein the balloon 2 is 4cm in length, the catheter body 1 is made of a silica gel material, a balloon channel 5 is communicated between the balloon 2 and the balloon connector 4, a drainage lumen channel 15 is communicated between the drainage tube connector 6 and the catheter body 1, the balloon connector 4 is 7cm in length, the drainage tube connector 6 is 7cm in length, the head of the catheter body 1 is a conical head 3, a guide wire channel 13 is disposed at the tip of the conical head 3 along the axis of the conical head, and the tip of the conical head 3 is an arc-shaped surface. The arrangement of the arc-shaped surface prevents the conical head 3 from being too sharp to hurt the human body. The internal diameter of seal wire channel 13 is 0.08cm, and seal wire channel 13 is the toper, and its length is 1cm, and seal wire channel 13 and drainage chamber way 15 intercommunication have been seted up three drainage hole 11 on the pipe body 1 between the pipe body 1 head and sacculus 2, and three drainage hole 11 is the heliciform and arranges on the pipe body 1, and the opening width of three drainage hole 11 all accounts for the length of the quarter of pipe body 1 external diameter girth, is equipped with between the three drainage hole 11 to be used for increasing the reinforcing bone 12 of pipe body 1 head intensity. The reinforcing bone 12 is positioned in the inner layer of the catheter body 1 and positioned in the gap between the adjacent drainage holes 11, the outer layer of the catheter body 1 is composed of silica gel, the reinforcing bone 12 is spirally excessive below the side opening of the catheter body 1 through the conical head 3 and gradually becomes thinner and gradually replaced by the outer layer of silica gel, and the reinforcing bone 12 is made of non-toxic hard plastic. The reinforcing bone 12 supports and reinforces the catheter body 1, and simultaneously extends to the conical head 3 in a spiral shape, and gradually reduces to the tip of the catheter body 1 in a funnel shape together with the conical head 3 to form a part of the guide wire channel 13. So set up, reinforcing bone 12 plays the effect of strengthening the hardness to the pipe body 1, reinforcing bone 12 does not influence the pipe body 1 simultaneously and enters into the bladder, supports the anterior bony nature of ureter during the catheterization, and length is 1.5 cm. An annular groove 14 with a reverse opening is arranged in the drainage tube joint 6, and an elastic ring 7 is arranged at the edge of the tail end of the drainage tube joint 6.

The balloon channel 5 is fixedly arranged on the outer surface of the catheter body 1. So set up for sacculus passageway 5 and drainage chamber way 15 do not influence each other. An anti-reflux piston is arranged in the balloon joint 4. The backflow-preventing piston comprises an elastic rubber ring 8 and a balloon plug 9 with an annular bulge, the balloon plug 9 is sleeved inside the balloon joint 4, and the elastic rubber ring 8 is sleeved outside the balloon joint 4.

The model of the selected catheter body 1 is 20, and the inner diameter of the drainage cavity 15 is 2.5mm-5 mm. The inner diameter of the drainage cavity 15 is within the range of 2.5mm-5mm, and catheter bodies 1 of different types can be selected according to requirements. In the embodiment, the model of the inner diameter of the drainage cavity 15 is 3 mm.

The working principle and the process are as follows:

when the symmetrical urination open pore is blocked by a unilateral open pore or blood clots are attached, the water outlet direction of flushing is opposite to the blocking direction, the flushing effect is poor, the practical ureter realizes 360-degree no-dead-angle flushing through the arrangement of three spirally-arranged drainage holes 11, the opening direction is spiral, the flushing force and the flushing effect on the bladder are enhanced, the problem that the drainage holes 11 are easy to block is solved, meanwhile, the arrangement of the bone 12 is enhanced, the strength of the catheter body 1 is ensured, the 360-degree spiral flushing effect is favorably ensured, a special guide wire channel 13 for the guide wire to pass through is arranged in the inner center of the catheter body 1, the channel can pass through the current clinical common guide wires including zebra guide wires, loach guide wires, rigid guide wires and the like, thereby effectively reducing the difficulty of guiding urine, and as long as the urinary catheter smoothly enters the bladder, the practical ureter can be pushed into the bladder along the guide wire, for the urethra with stenosis or obstruction, as long as the guide wire can be placed into the bladder, the practical ureter can be easily pushed into the bladder, and finally the guide wire is taken out from the drainage tube joint 6. An inflation substance such as a liquid or air is delivered to the interior of the balloon 2 through the balloon channel 5. After the balloon 2 is inflated, the balloon connector 4 is blocked by the anti-backflow piston, so that the balloon 2 keeps the inflation state and is clamped at the bladder neck to play a role in fixing the catheter body 1 to prevent falling. The annular bulge on the balloon plug 9 can clamp the balloon plug 9 in the balloon joint 4, and the balloon plug 9 and the balloon joint 4 are fixed firmly through the elastic rubber ring 8, so that the phenomenon of loosening is prevented. The annular groove 14 and the elastic ring 7 reinforce the joint point of the drainage bag and the flusher, tighten the force application point of the tail end, resist the larger reverse pulling force by the resistance of the tail end of the drainage tube joint 6, resist the larger impulsive force without flushing the urinary catheter, and prevent the urine from splashing when the bladder is flushed.

Example 2:

as shown in fig. 5 and 6, in the present embodiment, based on embodiment 1, the surface of the catheter body 1 is coated with a hydrophilic lubricating coating 10. In this embodiment, the hydrophilic lubricating coating 10 is a BR-type hydrophilic super-lubricating coating.

The hydrophilic lubricating coating 10 is very smooth when meeting water, so that a lubricating oil package in a common urethral catheterization package is omitted, the use cost is saved, and the medical resources are saved.

Embodiment 2 the rest of the structure and the working principle are the same as those of embodiment 1.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a practicality catheter, includes the pipe body, sets up the sacculus on the pipe body and connects and sacculus joint with the drainage coupling of pipe body coupling, the intercommunication has the sacculus passageway between sacculus and the sacculus joint, the intercommunication has drainage chamber way between drainage coupling and the pipe body, a serial communication port, the head of the pipe body is the conical head, and the seal wire passageway has been seted up along its axis to the point portion of this conical head, seal wire passageway and drainage chamber way intercommunication, three drainage hole has been seted up on the pipe body between pipe body head and the sacculus, and is three drainage hole top-down is the heliciform and arranges on the pipe body, and is three the opening width in drainage hole all accounts for the length of the at least sixth of pipe body external diameter girth, and is three be equipped with the reinforcing bone that is used for increasing pipe body head intensity between the drainage hole.

2. The utility catheter of claim 1, wherein the tip of the conical head is an arc-shaped surface.

3. The utility catheter of claim 2, wherein the balloon channel is located within a sidewall of the catheter body.

4. The utility model of claim 3, wherein the reinforcing bone is located in the inner layer of the catheter body and in the gap between adjacent drainage holes, the outer layer of the catheter body is made of silica gel, the reinforcing bone is spirally transited to the position below the side opening of the catheter body by the conical head, becomes thinner and replaced by the outer layer of silica gel, and the reinforcing bone is made of hard plastic material.

5. The utility catheter according to claim 4, characterized in that an anti-reflux piston is provided in the balloon connector.

6. The utility catheter according to claim 1, wherein the drainage tube connector is provided with a reversely protruding annular groove therein.

7. The utility catheter according to claim 6, wherein the distal edge of the drainage tube joint is provided with an elastic ring.

8. The utility catheter according to claim 4, wherein the anti-reflux piston comprises an elastic rubber ring and a hollow balloon plug with an annular protrusion, the balloon plug is arranged inside the balloon connector, and the elastic rubber ring is sleeved outside the balloon connector. The plug for preventing reverse flow plays a role in fixing and preventing reverse flow.

9. The utility catheter according to any one of claims 1 to 8, wherein the drainage lumen has an inner diameter of 2.5mm to 5mm, and the catheter body has a size of 12 to 26.

10. The utility catheter of claim 8, wherein the catheter body is coated on its surface with a hydrophilic lubricious coating.