CN213789173U - Self-expanding catheter - Google Patents

Abstract

The utility model discloses a self-expanding catheter, which comprises a catheter body, a support frame and a catheter end head which are arranged from a near end to a far end in sequence, wherein the support frame comprises a plurality of ribs which are protruded outwards from the middle part under a natural state, and the two ends of the plurality of ribs are respectively connected with the far end of the catheter body and the near end of the catheter end head; the inner part of the pipe body is provided with a first cavity channel which is arranged along the axial direction and penetrates through the two ends; the catheter also comprises a guide wire, wherein the far end of the guide wire passes through the hollow structure among the plurality of ribs of the support frame after passing through the first cavity channel and abuts against the end head of the catheter, so that the plurality of ribs can be straightened. The utility model provides a from inflation catheter simple structure, convenient operation can realize the catheter fixed in the bladder, need not to aerify or the topping up to the sacculus, and can avoid inflation sacculus extrusion bladder to realize better catheterization effect.

Description

Self-expanding catheter

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to self-expanding catheter.

Background

A urinary catheter is a conduit inserted into the bladder through the urethra to drain urine, typically made of natural rubber, silicone rubber or polyvinyl chloride (PVC). After the catheter is inserted into the bladder, the head end of the catheter is remained in the bladder, and urine flows out through the catheter body.

The existing catheters comprise a non-sac catheter and a sac catheter, and the non-sac catheter is easy to displace after being inserted into a bladder; the sacculus that has a bag catheter is generally for aerifing the sacculus, need inject into normal saline and expand the sacculus during the use, and this has brought the degree of difficulty for the intubate, and the sacculus expands and occupies a great space in vivo simultaneously, easily causes catheter jam scheduling problem.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a self-expanding catheter for the catheter can fix a position stably after inserting the bladder, and is difficult to cause the urethral catheterization mouth to block up.

The utility model provides a self-expanding catheter, which comprises a catheter body, a support frame and a catheter end head which are arranged from a near end to a far end in sequence, wherein the support frame comprises a plurality of ribs which are protruded outwards from the middle part under a natural state, and the two ends of the plurality of ribs are respectively connected with the far end of the catheter body and the near end of the catheter end head; the inner part of the pipe body is provided with a first cavity channel which is arranged along the axial direction and penetrates through the two ends; the catheter also comprises a guide wire, wherein the far end of the guide wire passes through the hollow structure among the plurality of ribs of the support frame after passing through the first cavity channel and abuts against the end head of the catheter, so that the plurality of ribs can be straightened.

Further, the pipe body, the support frame and the pipe end are integrally formed by injection molding of silica gel or PVC materials.

Further, the natural state of the ribs is an outwards convex arc-shaped structure.

Further, the number of the ribs is 4-8.

Further, the tube body is also provided with a second cavity channel arranged along the axial direction, and the second cavity channel is used for inserting the endoscope.

Further, a third cavity channel which is arranged along the axial direction and penetrates through two ends is arranged in the catheter body, and the third cavity channel is used for flushing the catheter.

Further, the catheter still including set up the multi-functional joint of body near-end, be equipped with three interface on the multi-functional joint, respectively with first chamber says, second chamber says and the third chamber says the intercommunication.

Further, the conduit end has a cambered surface structure.

The utility model provides a from inflation catheter simple structure, convenient operation can realize the catheter fixed in the bladder, need not to aerify or the topping up to the sacculus, and can avoid inflation sacculus extrusion bladder to realize better catheterization effect.

Drawings

Fig. 1 is a schematic view of a catheter according to a first embodiment of the invention.

Fig. 2 is a front cross-sectional view of the urinary catheter of fig. 1.

Fig. 3 is a schematic view of a catheter during intubation according to a first embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In the present specification, "proximal" is defined as the end closer to the operator, and "distal" is defined as the end farther from the operator. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 and 2, a first embodiment of the present invention provides a self-expanding urinary catheter 100, comprising a tube 110, a support frame 120 and a catheter tip 130, which are sequentially arranged from a proximal end to a distal end, wherein the support frame 120 comprises a plurality of ribs protruding outward from the middle under a natural state, and two ends of the plurality of ribs are respectively connected to the distal end of the tube 110 and the proximal end of the catheter tip 130; the tube body 110 is internally provided with a first cavity 111 which is arranged along the axial direction and penetrates through two ends; as shown in fig. 3, the urinary catheter 100 further includes a guide wire 140, and a distal end of the guide wire 140 passes through the hollow structure between the plurality of ribs of the support frame 120 after passing through the first lumen 110, and abuts against the catheter tip 130, so as to straighten the plurality of ribs.

When the catheter 100 is implanted into the bladder of a patient, the guide wire 140 is firstly inserted into the catheter, and the plurality of ribs are straightened, so that the plurality of ribs of the support frame 120 are straightened, and the catheter forms a pipe body structure with uniform outer diameter, thereby being beneficial to the insertion of the catheter. After the catheter tip 130 and the support frame 120 are inserted into the bladder of the patient, the guide wire 140 is removed, the plurality of ribs of the support frame 120 automatically expand to form an arc-shaped structure protruding outwards and fixed in the bladder, and urine can flow into the catheter through a plurality of gaps between the plurality of ribs, so that the urethral catheterization effect is realized.

Compared with the catheter without the balloon, the catheter provided by the utility model has the advantages that the catheter can be fixed in the bladder by arranging the self-expanding support frame; compared with a liquid-filled or gas-filled balloon, the balloon does not need to be inflated or filled with liquid, and the bladder can be prevented from being extruded by the expansion balloon, so that a better urethral catheterization effect is realized.

In the utility model, the ribs can be of an arc structure protruding outwards in a natural state; the number of the ribs can be 4 to 8. In this embodiment, the number of the ribs is 4.

It should be noted that the first channel 111 may be used as a guidewire lumen and may also be used as a urinary catheter lumen after insertion of a urinary catheter.

The tube body 110, the support frame 120 and the catheter tip 130 can be integrally formed by injection molding of materials such as PVC and silica gel.

Further, a second channel 112 is disposed in the tube 100 along the axial direction, and the second channel is used for inserting an endoscope.

It should be noted that the proximal end of the second channel 112 is connected to the outside, and the distal end is a closed structure.

Further, a third channel 113 axially disposed and penetrating through both ends is further disposed in the tube 100, and the third channel 113 may be a flushing cavity or a dosing cavity.

Further, the urinary catheter 110 further comprises a multifunctional joint 150 disposed at the proximal end of the catheter body, wherein the multifunctional joint 150 is provided with a plurality of interfaces respectively communicated with the plurality of channels in the catheter body 110.

Further, the conduit tip 130 has a cambered surface structure. This scheme can avoid the catheter to cause the damage to the human body.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. A self-expansion catheter is characterized by comprising a catheter body, a support frame and a catheter end head which are sequentially arranged from a near end to a far end, wherein the support frame comprises a plurality of ribs which are protruded outwards from the middle part under a natural state, and two ends of the plurality of ribs are respectively connected with the far end of the catheter body and the near end of the catheter end head; the inner part of the pipe body is provided with a first cavity channel which is arranged along the axial direction and penetrates through the two ends; the catheter also comprises a guide wire, wherein the far end of the guide wire passes through the hollow structure among the plurality of ribs of the support frame after passing through the first cavity channel and abuts against the end head of the catheter, so that the plurality of ribs can be straightened.

2. The self-expanding urinary catheter according to claim 1, wherein the catheter body, the support frame and the catheter tip are integrally injection-molded from a silicone or PVC material.

3. The self-expanding urinary catheter according to claim 1, wherein the ribs are of an outwardly convex arcuate configuration in a natural state.

4. A self-expanding urinary catheter according to claim 3, wherein the number of ribs is 4 to 8.

5. A self-expanding urinary catheter according to claim 1, wherein the tubular body further has a second channel arranged in the axial direction, said second channel being adapted for insertion of an endoscope.

6. The self-expanding urinary catheter according to claim 5, wherein said catheter body further comprises a third channel axially disposed through said catheter body, said third channel being adapted to allow for flushing of said catheter.

7. The self-expanding urinary catheter according to claim 6, further comprising a multi-functional connector disposed at the proximal end of the catheter body, wherein the multi-functional connector is provided with three ports respectively communicating with the first channel, the second channel and the third channel.

8. The self-expanding urinary catheter according to claim 1, wherein the catheter tip has a cambered surface configuration.

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