CN221888886U - Subcutaneous puncture dura mater catheter - Google Patents

Abstract

The utility model discloses a subcutaneous puncture dura mater catheter, comprising a catheter and a puncture end, wherein a positioning sleeve is arranged between the catheter and the puncture end, the catheter and the puncture end are connected in a detachable manner, a dura mater port is arranged along the axial direction of the catheter, the dura mater port is arranged as a split structure from the upper end to the position of 10-15mm below, the positioning sleeve passes through the puncture end and is connected to the catheter in a detachable manner, two groups of symmetrical first diaphragms and second diaphragms are arranged on the dura mater port, a first fluid channel and a second fluid channel are opened on the first diaphragm and the second diaphragm, a side of the catheter away from the puncture end is connected to the first fluid channel and the second fluid channel in a detachable manner through a Y-shaped channel tube, the puncture end is an arc structure, and is made of stainless steel, and the end of the puncture end is connected to the first fluid channel and the second fluid channel by bolts.

Description

Subcutaneous puncture dural catheter

Technical Field

The utility model belongs to the technical field of medical treatment, and in particular relates to a subcutaneous puncture dura mater catheter.

Background Art

In clinical practice, hemodialysis catheters are mainly used for patients who require bedside blood purification treatment. Such patients are often in critical condition, have low immunity, and are susceptible to infection. In addition, the caliber of the catheter is larger than that of a general venous tube, so blood clots are more likely to form after continuous bedside blood purification treatment, and the risk of bleeding and infection during puncture is greater. However, it is not easy to leave the catheter in place for too long, and generally needs to be replaced every 7-10 days. For patients who need to use the device for a long time, they will undoubtedly face the pain of repeated punctures and bear the risks that may arise from the process.

The peritoneal dialysis catheter is composed of a catheter, a lead wire and a polyester sheath. The insertion end of the catheter is provided with a side hole. Peritoneal dialysis is an effective renal replacement therapy for end-stage renal disease, and the peritoneal dialysis catheter is the "lifeline" of peritoneal dialysis patients.

However, existing peritoneal dialysis catheters still have shortcomings: first, most of them adopt an integral structure. When replacing the peritoneal dialysis catheter, the dialysis catheter needs to be replaced as a whole, which is inconvenient for replacing the external pipeline of the peritoneal dialysis catheter and easily leads to waste of resources. Secondly, a double-tube head is used. Due to the limited position of the double-tube head, during the injection and reflux process, the pipeline of the reflux fluid is relatively close to the pipeline of the injection fluid, which affects the injection effect of the dialysis catheter and causes the problem of poor hemodialysis effect.

In view of the above factors, a subcutaneous puncture dural catheter is specially designed, which can not only meet the needs of subcutaneous dural puncture, but also meet the needs of injection and reflux when dialysis is required.

Utility Model Content

The utility model aims to provide a subcutaneous puncture dura mater catheter to solve the problems raised in the above background technology.

The purpose of the utility model is achieved through the following technical solutions: a subcutaneous puncture dura mater catheter, comprising a catheter and a puncture end, a positioning sleeve is arranged between the catheter and the puncture end, the catheter and the puncture end are connected in a detachable manner, a dura mater port is arranged along the axial direction of the catheter, and the dura mater port is arranged as a split structure from the upper end to the lower 10-15mm position;

The positioning sleeve passes through the puncture end and is connected to the catheter in a detachable manner;

The dura mater port is provided with two groups of symmetrical first diaphragms and second diaphragms.

Furthermore, the first diaphragm and the second diaphragm are provided with a first fluid channel and a second fluid channel;

The side of the catheter away from the puncture end is connected to the Y-shaped channel tube in a detachable manner and communicates with the first fluid channel and the second fluid channel.

Furthermore, the puncture end is an arc-shaped structure and is made of stainless steel. The end of the puncture end is connected to the first fluid channel and the second fluid channel by bolts.

Further, the first fluid channel and the second fluid channel have different diameters.

Furthermore, the first diaphragm and the second diaphragm are staggered, and the staggered intersection angle of the first diaphragm and the second diaphragm is 45 degrees or 60 degrees.

Furthermore, the catheter and the dura mater port are made of medical silicone material, and the first diaphragm and the second diaphragm on the dura mater port have the same length.

Furthermore, the catheter and the dura mater port are made of medical silicone material, and the first diaphragm and the second diaphragm on the dura mater port have different lengths.

Furthermore, the length of the first diaphragm on the dura mater port is half of the length of the second diaphragm.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model adopts a detachable combination, which is convenient for disassembly and replacement when in use, and at the same time, a positioning sleeve is passed through the puncture end and the catheter for fixing, so as to meet the multi-purpose effect.

The utility model can meet the needs of subcutaneous dural puncture. The assembled catheter and the puncture end are passed through the channel established under the skin, the positioning sleeve and the puncture end are disassembled, and the first diaphragm and the second diaphragm are placed in the tear-off sheath tube and penetrate into the patient's body. After that, the first diaphragm and the second diaphragm are opened at the designated position, which can meet the needs of injection and reflux during dialysis.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a three-dimensional schematic diagram of the utility model;

FIG2 is a schematic cross-sectional view of FIG1 of the utility model;

FIG3 is an enlarged schematic diagram of the dura mater port of the utility model;

FIG4 is a plan view of a dura mater port of the present invention;

FIG5 is a schematic cross-sectional view of FIG4 of the utility model;

FIG6 is a schematic diagram of the deployment of the dura mater port of the utility model;

FIG. 7 is a schematic diagram of the connection between the utility model and the Y-shaped channel tube.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

As shown in Fig. 1-7, a subcutaneous puncture dura mater catheter comprises a catheter 1 and a puncture end 2, a positioning sleeve 3 is arranged between the catheter 1 and the puncture end 2, the catheter 1 and the puncture end 2 are detachably connected, a dura mater port 4 is arranged along the axial direction of the catheter 1, and the dura mater port 4 is arranged as a split structure from the upper end to the lower 10-15mm position;

The positioning sleeve 3 passes through the puncture end 2 and is connected to the catheter 1 in a detachable manner;

The dura mater port 4 is provided with two groups of symmetrical first diaphragms 5 and second diaphragms 6 .

In order to facilitate injection and reflux application during dialysis through the dura mater catheter in use, the first diaphragm 5 and the second diaphragm 6 are provided with a first fluid channel 7 and a second fluid channel 8;

The side of the catheter 1 away from the puncture end 2 is connected to the first fluid channel 7 and the second fluid channel 8 in a detachable manner via a Y-shaped channel tube.

In order to facilitate the establishment of a subcutaneous dural channel in the initial state through the puncture end in use, the puncture end 2 is an arc-shaped structure and is made of stainless steel. The end of the puncture end 2 is connected to the first fluid channel 7 and the second fluid channel 8 by bolts.

In order to facilitate the use according to the requirements of different groups of people, two different fluid channels are provided for different injection and reflux states, and the diameters of the first fluid channel 7 and the second fluid channel 8 are different.

For the convenience of use, the first diaphragm 5 and the second diaphragm 6 are set differently so that they can be expanded to a certain angle according to the angle setting after entering the puncture channel of the human body. At this time, the directions of injection and reflux are different. The first diaphragm 5 and the second diaphragm 6 are staggered, and the staggered intersection angle of the first diaphragm 5 and the second diaphragm 6 is 45 or 60 degrees.

In the use state, according to different use requirements, the catheter 1 and the dura mater port 4 are made of medical silicone material, and the first diaphragm 5 and the second diaphragm 6 on the dura mater port 4 are the same length.

In the use state, according to different use requirements, the catheter 1 and the dura mater port 4 are made of medical silicone material, and the first diaphragm 5 and the second diaphragm 6 on the dura mater port 4 are of different lengths.

In the use state, by setting diaphragms of different lengths, it is ensured that when in use, adjustment is made according to different entry positions, and the length of the first diaphragm 5 on the dura membrane port 4 is half the length of the second diaphragm 6.

When the utility model is used, before subcutaneous puncture, the puncture end is connected with the dura mater port 4 provided in the axial direction of the catheter 1 by bolts, wherein the bolt port of the dura mater port 4 is provided on the longer end of the first diaphragm 5 and the second diaphragm 6. After the puncture end is connected with the catheter 1, the positioning sleeve is passed through the puncture end and fixed to the outer circumference of the catheter, wherein the positioning catheter is a hollow conical tube structure, and the small end of the positioning sleeve faces the puncture end;

The assembled catheter 1 and the puncture end are passed through the channel established under the skin, the positioning sleeve and the puncture end are removed, and the first diaphragm 5 and the second diaphragm 6 are inserted into the tear-off sheath and penetrate into the patient's body. After that, the first diaphragm 5 and the second diaphragm 6 are opened at the designated position.

It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims (8)

1. A subdermal puncture epidural catheter, characterized by: the catheter comprises a catheter (1) and a puncture end (2), wherein a positioning sleeve (3) is arranged between the catheter (1) and the puncture end (2), the catheter (1) is detachably connected with the puncture end (2), a dura mater port (4) is arranged along the axial direction of the catheter (1), and the dura mater port (4) is arranged in a split structure from the upper end to the lower 10-15mm position;

The positioning sleeve (3) penetrates through the puncture end (2) and is detachably connected with the catheter (1);

Two groups of symmetrical first diaphragms (5) and second diaphragms (6) are arranged on the hard film port (4).

2. The subcutaneous puncture epidural catheter according to claim 1, wherein: the first diaphragm (5) and the second diaphragm (6) are provided with a first fluid channel (7) and a second fluid channel (8);

One side of the catheter (1) far away from the puncture end (2) is detachably connected with a Y-shaped channel tube and is communicated with a first fluid channel (7) and a second fluid channel (8).

3. The subcutaneous puncture epidural catheter according to claim 2, wherein: the puncture end (2) is of an arc-shaped structure and is made of stainless steel, and the tail end of the puncture end (2) is connected with the first fluid channel (7) and the second fluid channel (8) in a bolt mode.

4. A subcutaneous puncture epidural catheter according to claim 3, wherein: the diameters of the first fluid channel (7) and the second fluid channel (8) are different.

5. The subcutaneous puncture epidural catheter according to claim 4, wherein: the first membrane (5) and the second membrane (6) are arranged in a staggered mode, and the staggered intersection angle of the first membrane (5) and the second membrane (6) is 45 degrees or 60 degrees.

6. The subdermal puncture catheter according to claim 5, wherein: the catheter (1) and the dural port (4) are made of medical silica gel materials, and the lengths of a first diaphragm (5) and a second diaphragm (6) on the dural port (4) are the same.

7. The subdermal puncture catheter according to claim 5, wherein: the catheter (1) and the dural port (4) are made of medical silica gel materials, and the lengths of a first diaphragm (5) and a second diaphragm (6) on the dural port (4) are different.

8. The subcutaneous puncture epidural catheter according to claim 7, wherein: the length of the first membrane (5) on the hard membrane port (4) is one half of the length of the second membrane (6).