CN211157562U

CN211157562U - Catheter assembly and catheter inner core thereof

Info

Publication number: CN211157562U
Application number: CN201920874438.0U
Authority: CN
Inventors: 程传宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-08-04
Anticipated expiration: 2029-06-12

Abstract

The utility model relates to a catheter subassembly and catheter inner core thereof. The utility model discloses a before the catheter subassembly used, earlier with the catheter suit on the catheter inner core to make the rear end suit of catheter at the ring bench, then will compress tightly the cover and pass through locking structure and catheter inner core locking connection, make and compress tightly the cover and compress tightly the catheter at the ring bench, guaranteed like this that catheter and catheter inner core are connected integratively, avoided using tissue forceps or other instruments to press from both sides tightly in addition, solved the inconvenient problem of catheterization operation that consequently causes.

Description

Catheter assembly and catheter inner core thereof

Technical Field

The utility model relates to a catheter subassembly and catheter inner core thereof.

Background

When the urethral catheterization is clinically performed on a patient with prostatic hyperplasia, the urethra of the prostatic part is blocked due to the prostatic hyperplasia, the rubber catheter body is soft, and the indwelling catheterization fails due to the fact that a certain section of the catheter is twisted. In addition, the catheter is affected by the friction between the urethral mucosa and the wall of the catheter, in addition to the resistance of the hyperplastic glands. In view of the above problems, a catheter assembly has appeared in the prior art, for example the catheter assembly disclosed in chinese patent document with the publication number CN206577168U, including catheter and catheter introducer, the catheter is three-cavity catheter, including drainage cavity, gasbag cavity and flushing cavity, the material is silica gel, the activity suit of catheter introducer is in the catheter drainage cavity, and length is greater than catheter length, and the front end is crooked, and the rear end extends and forms the annular handle, the handle diameter is greater than drainage cavity inner core diameter. The urethral catheter is simple in structure, the problem that the urethral catheter is difficult to insert due to physiological bending of the male urethra is solved, the urethral catheter is tensioned and fixed in advance to prevent slipping, the advancing direction of the urethral catheter assembly is controlled, the urethral catheter can be inserted into the bladder at one time, and the treatment efficiency is improved.

However, during the use process, the catheter assembly needs to use the tissue clamp to tightly clamp the tail end of the drainage cavity, so that the tissue clamp is always clamped on the catheter assembly during the catheterization process, and the catheterization operation is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a catheter component, which solves the problem of inconvenient operation of the existing catheter component caused by the need of clamping tissue forceps all the time in the using process; and simultaneously, the utility model also provides a catheter inner core among the above-mentioned catheter subassembly.

The utility model discloses a catheter inner core adopts following technical scheme:

the catheter inner core, including the inner core body that extends along the fore-and-aft direction, head, other end are for being used for the handheld operation's of the inner chamber that is arranged in entering into corresponding catheter in the one end of inner core body, the inner core body is equipped with the ring platform that outside outstanding, be used for supplying corresponding rear end suit of catheter on being close to the periphery of its position department of operation end, install on the inner core body and be used for compressing tightly the catheter the epaxial cover that compresses tightly of ring, just compress tightly the cover with be equipped with locking structure between the inner core body.

The ring platform is a conical ring platform structure with a small front part and a large rear part.

And a ring groove is arranged at the rear end of the conical ring platform.

The cross section of the ring groove is of a smooth structure.

The front end of the pressing sleeve is provided with an inward-turned edge extending inwards along the radial direction of the pressing sleeve, and the inner circumferential surface of the inward-turned edge forms a pressing surface used for pressing the catheter on the annular table.

The pressing surface is of a circular arc structure.

The locking structure comprises an external thread arranged on the rear side of the annular table and an internal thread arranged on the inner wall of the pressing sleeve and matched with the external thread.

The inner core body is of a split structure comprising a rod part and an operation part, and the rod part is detachably connected with the operation part through threads.

The utility model discloses a catheter subassembly adopts following technical scheme:

catheter subassembly, include the catheter that extends along the fore-and-aft direction and be used for the cartridge to be in catheter inner core in the inner chamber of catheter, the catheter inner core includes the inner core body that extends along the fore-and-aft direction, head, the other end are for being used for the operation end that is used for handheld operation in the inner chamber that is used for entering into corresponding catheter of one end of inner core body, be equipped with the ring platform that outside outstanding, be used for supplying the rear end suit of corresponding catheter on the periphery of the position department that the inner core body is close to its operation end, install on the inner core body and be used for compressing tightly the catheter the cover that compresses tightly on the ring platform, just compress tightly the cover with be equipped with locking structure between the inner core body.

And a ring groove is arranged at the rear end of the conical ring platform.

The cross section of the ring groove is of a smooth structure.

The pressing surface is of a circular arc structure.

The utility model has the advantages that: the utility model discloses a before the catheter subassembly used, earlier with the catheter suit on the catheter inner core to make the rear end suit of catheter at the ring bench, then will compress tightly the cover and pass through locking structure and catheter inner core locking connection, make and compress tightly the cover and compress tightly the catheter at the ring bench, guaranteed like this that catheter and catheter inner core are connected integratively, avoided using tissue forceps or other instruments to press from both sides tightly in addition, solved the inconvenient problem of catheterization operation that consequently causes.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view of a catheter inner core in an embodiment of a catheter assembly of the present invention;

FIG. 2 is an enlarged fragmentary view at the operative end of FIG. 1;

FIG. 3 is a schematic view of the installation structure of the pressing sleeve;

fig. 4 is an enlarged partial view of the threaded hole in the stem portion of the inner catheter core;

fig. 5 is a schematic view of the operative portion of the inner core of the catheter;

FIG. 6 is a perspective view of a compression sleeve;

FIG. 7 is a cross-sectional view of the compression sleeve;

in the figure: 1. a rod portion; 2. a compression sleeve; 21. a compression surface; 41. a ring platform; 42. a ring groove; 43. an external thread; 44. a connector; 11. a threaded hole; 3. an operation end; 22. an internal thread; 23. and (4) anti-slip teeth.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses an embodiment of catheter assembly, as shown in fig. 1 to 7, catheter assembly, include the catheter that extends along the fore-and-aft direction and be arranged in the catheter inner core of cartridge in the inner chamber of catheter, the catheter inner core includes the inner core body that extends along the fore-and-aft direction, the one end of inner core body is for being arranged in entering into the inner chamber head of corresponding catheter, the other end is for being used for handheld operation's operation end 3, be equipped with outside outstanding in the periphery of the position department that the inner core body is close to its operation end 3, a ring platform 41 for supplying the rear end suit of corresponding catheter, install on the inner core body and be used for compressing tightly the catheter and compress tightly the cover 2 on ring platform 41, and compress tightly and be equipped with locking structure between cover 2 and the inner core body.

In this embodiment, in order to ensure the compression effect, the catheter is released after the compression is placed, and the ring platform 41 is set to be a tapered ring platform structure with a small front part and a large back part.

In this embodiment, the back end of the conical ring platform is provided with a ring groove 42, and the ring groove 42 can clamp the opening of the back end of the sleeved catheter in the ring groove 42, so that the reliability of connection between the catheter and the catheter inner core is further improved, and the catheter is prevented from being separated.

Considering that the catheter is rubber or silica gel material, and the catheter inner core is the metal material, combine between the two to make the catheter inner core rip the catheter very easily, in this embodiment, the cross-section of annular 42 is the rounding off structure, can avoid the fish tail of catheter like this.

The front end of the pressing sleeve 2 is provided with an inward turned edge extending inwards along the radial direction, and the inner circumferential surface of the inward turned edge forms a pressing surface 21 for pressing the catheter on the ring table 41. Similarly, in order to avoid the damage of the catheter caused by the pressing surface 21, the pressing surface 21 is made into a circular arc structure, so that hard edges and corners are avoided. In order to increase the friction, in the present embodiment, anti-slip teeth 23 are provided on the outer circumference of the pressing sleeve.

In order to facilitate the processing and reduce the manufacturing cost, the locking structure is provided as a thread locking structure in the present embodiment, and specifically, the locking structure includes an external thread 43 provided on the rear side of the ring table and an internal thread 22 provided on the inner wall of the pressing sleeve 2 and engaged with the external thread 43.

In this embodiment, in order to facilitate the processing of the catheter inner core, the inner core body is provided with a split structure comprising the rod part 1 and the operating part, and the rod part 1 and the operating part are detachably connected through threads, so that the rod part 1 and the operating part can be separately processed and finally assembled in the processing and manufacturing process. Specifically, a threaded hole 11 is provided at the end of the shaft portion, a connector 44 having an external thread is provided at the end of the operating portion, and the connector 44 is screw-fitted in the threaded hole 11.

The utility model discloses a before the catheter subassembly used, earlier with the catheter suit on the catheter inner core to make the rear end suit of catheter at the ring bench, then will compress tightly the cover and pass through locking structure and catheter inner core locking connection, make and compress tightly the cover and compress tightly the catheter at the ring bench, guaranteed like this that catheter and catheter inner core are connected integratively, avoided using tissue forceps or other instruments to press from both sides tightly in addition, solved the inconvenient problem of catheterization operation that consequently causes.

In other embodiments of the present invention, the locking structure may also adopt a buckle connection structure, i.e. a slot is arranged on the inner core, and a claw adapted to the compressing sleeve is arranged on the compressing sleeve; the ring platform can also be a cylindrical step; the ring groove can also be a rectangular groove; the pressing surface can also be of an inner conical surface structure; the rod part and the operating part can also be connected by welding.

The utility model discloses an embodiment of catheter inner core, the catheter inner core is the same with the structure of the catheter inner core in the embodiment of above-mentioned catheter subassembly, no longer gives unnecessary details.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Catheter inner core, including the inner core body that extends along the fore-and-aft direction, head, the other end are for being used for the operation end that is used for handheld operation, its characterized in that in the inner chamber that is used for entering into corresponding catheter in the one end of inner core body: the outer periphery of the inner core body at a position close to the operating end of the inner core body is provided with a ring platform which protrudes outwards and is used for sleeving the rear end of a corresponding catheter, the inner core body is provided with a pressing sleeve which is used for pressing the catheter on the ring platform, and a locking structure is arranged between the pressing sleeve and the inner core body.

2. The inner core for a urinary catheter according to claim 1, wherein: the ring platform is a conical ring platform structure with a small front part and a large rear part.

3. The inner core for a urinary catheter according to claim 2, wherein: and a ring groove is arranged at the rear end of the conical ring platform.

4. The inner core for a urinary catheter according to claim 3, wherein: the cross section of the ring groove is of a smooth structure.

5. The inner core for a urinary catheter according to claim 2 or 3, wherein: the front end of the pressing sleeve is provided with an inward-turned edge extending inwards along the radial direction of the pressing sleeve, and the inner circumferential surface of the inward-turned edge forms a pressing surface used for pressing the catheter on the annular table.

6. The inner core for a urinary catheter according to claim 5, wherein: the pressing surface is of a circular arc structure.

7. The inner core for a urinary catheter according to claim 2 or 3, wherein: the locking structure comprises an external thread arranged on the rear side of the annular table and an internal thread arranged on the inner wall of the pressing sleeve and matched with the external thread.

8. The inner core for a urinary catheter according to any one of claims 1 to 3, wherein: the inner core body is of a split structure comprising a rod part and an operation part, and the rod part is detachably connected with the operation part through threads.

9. Catheter assembly, including the catheter that extends along the fore-and-aft direction and be used for the cartridge to be in the catheter inner core in the inner chamber of catheter, its characterized in that: the inner catheter core according to any one of claims 1 to 8.