CN217246182U

CN217246182U - Pigtail type catheter

Info

Publication number: CN217246182U
Application number: CN202220232719.8U
Authority: CN
Inventors: 郭云国; 陈光洁; 范孝春; 张议丹
Original assignee: Sichuan Purui Shunxiang Medical Devices Co ltd
Current assignee: Sichuan Purui Shunxiang Medical Devices Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-08-23
Anticipated expiration: 2032-01-27

Abstract

The utility model provides a pigtail type pipe belongs to medical instrument technical field, include: the free end of the catheter body is provided with a pigtail loop, and the pigtail loop is in a non-closed ring shape formed by elastically bending the free end of the catheter; the catheter body is provided with a supporting structure which elastically deforms outwards along the radial direction in the ring of the pigtail loop; the utility model discloses a pigtail type pipe on pigtail ring's basis, has increased radial outside elastic deformation's bearing structure, is used for supplementary slippage that blocks the pipe through this bearing structure to avoid because the elasticity of pigtail ring circle is bent back not in place and the pipe slippage problem that arouses.

Description

Pigtail type catheter

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to pigtail type pipe.

Background

Nephrostomy tubes are commonly used clinically to achieve urinary diversion, hydronephrosis and drainage of pyonephrosis. A nephrostomy tube is a catheter placed directly into the renal pelvis percutaneously, with one end placed at the renal pelvis and one end leading outside the patient. It is divided into mushroom-shaped catheter and pigtail-shaped catheter according to the shape of the catheter placed on the renal pelvis and the principle of realizing the function.

The distal end of the pigtail catheter has a pigtail loop through which the catheter is prevented from slipping off. Before entering the human body, the pigtail loop needs to be aligned by a straightening tube so that the catheter can smoothly extend into the human body. After the straightened pigtail loop enters the human body, the straightening tube is moved to remove the limitation on the pigtail loop, so that the pigtail loop is elastically bent back.

However, since the pigtail loop is bent and aligned as a whole, the elastic deformation capability is poor, and when the pigtail loop is straightened for a long time, the elastic bending of the pigtail loop is not in place, which affects the effect of preventing the catheter from slipping.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the pigtail ring elasticity of the pigtail type pipe among the prior art and bending back not in place, can not prevent the defect of pipe slippage to a pigtail type pipe is provided.

In order to solve the technical problem, the utility model provides a pigtail type pipe, include: the free end of the catheter body is provided with a pigtail loop, and the pigtail loop is in a non-closed ring shape formed by elastically bending the free end of the catheter;

the catheter body is provided with a supporting structure which elastically deforms outwards along the radial direction in the ring of the pigtail loop.

Optionally, the support structure is provided at the root of the pigtail loop.

Optionally, the support structure is a sheet body formed by axially cutting the side wall of the catheter, and the middle part of the sheet body is elastically bent outwards to form a support.

Optionally, the sheet is a plurality of sheets uniformly arranged in the circumferential direction of the catheter.

Optionally, the lobes have four.

Optionally, the inside wall of the pigtail loop has a through hole leading to the inside of the conduit.

Optionally, the through hole has a plurality of through holes arranged at intervals.

Optionally, the middle section of the catheter body is slidably sleeved with a straightening pipe, and the straightening pipe is used for aligning the pigtail loop.

Optionally, the straightening tube has an outer wall tapered towards an end of the pigtail loop.

Optionally, the middle section of the catheter body is provided with scales for displaying the length.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a pigtail type pipe on the basis of pigtail ring circle, has increased radial outside elastic deformation's bearing structure, is used for supplementary slippage that blocks the pipe through this bearing structure to avoid because the elasticity of pigtail ring circle is bent back not in place and the pipe slippage problem that arouses.

2. The utility model provides a pigtail type pipe is used for carrying out the collimation to pigtail ring circle and bearing structure through straightening the straight tube to improve the convenience when inserting the pipe into the human body.

3. The utility model provides a pigtail type pipe, the tapering structure of the distal end of straightening pipe for insert human tissue when being convenient for get into the human body.

Drawings

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

Fig. 1 is a front view of one embodiment of a pigtail catheter provided in an embodiment of the present invention;

fig. 2 is an enlarged view of the distal end of the catheter body of fig. 1.

Description of reference numerals:

1. a catheter body; 2. a pigtail loop; 3. a support structure; 4. a sheet body; 5. straightening a pipe; 6. tapering; 7. and a through hole.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The pigtail catheter provided by the embodiment can be used in a drainage operation of a human body, such as a pyelostomy.

As shown in fig. 1, a specific embodiment of the pigtail catheter provided in this embodiment includes: the catheter comprises a catheter body 1, wherein a free end of the catheter body 1 is provided with a pigtail loop 2, and the pigtail loop 2 is in a non-closed ring shape formed by elastically bending the free end of the catheter; the pigtail loop 2 is used for extending into a cavity of a human body in an operation, so that a barrier is formed in the cavity of the human body to ensure that the catheter is not easy to slide out.

In addition, on the pigtail catheter provided by this embodiment, the catheter body 1 is provided with a support structure 3 which elastically deforms radially outwards in the loop of the pigtail loop 2. The supporting structure 3 is used for assisting in blocking the catheter from slipping off, so that the problem of catheter slipping off caused by the fact that the pigtail loop 2 is not bent back in place is avoided.

As shown in fig. 1, in the pigtail catheter provided in this embodiment, the support structure 3 is disposed at the root of the pigtail loop 2, the rebound velocity of the support structure 3 is greater than that of the pigtail loop 2, and after the distal pigtail loop 2 of the catheter body 1 is aligned and then guided into a human body, the pigtail loop 2 and the support structure 3 are released, so that the pigtail loop 2 and the support structure 3 rebound. Firstly, the supporting structure 3 rebounds in place, so that the catheter is blocked, then the pigtail loop 2 rebounds in place, the catheter is further blocked, and the catheter is prevented from slipping in a human body through double blocking.

As shown in fig. 2, in the pigtail catheter provided in this embodiment, the supporting structure 3 is a sheet 4 formed by axially cutting the side wall of the catheter, and the middle portion of the sheet 4 is elastically bent outward to form a support. The arrangement mode can guide the liquid in the human body through the supporting structure 3. In addition, this bearing structure 3 can be followed inside and collimated, specifically, can reset a plurality of lamellar bodies 4 through the mode that pushes away from inside to make the pipe resume the alignment state, so that the pipe can get into the human body smoothly.

In addition, as an alternative embodiment, the support structure 3 may also take other forms, for example, the support structure 3 may be formed by connecting elastic support sheets to the side walls of the catheter.

As shown in fig. 2, in the pigtail catheter provided in this embodiment, the sheet bodies 4 are uniformly arranged in the circumferential direction of the catheter, and specifically, the number of the sheet bodies 4 is four. In addition, as an alternative embodiment, only one, or more, of said sheets 4 can be provided.

As shown in figure 2, the inner side wall of the pigtail loop 2 is provided with a through hole 7 leading to the inside of the catheter, and the through hole 7 is used for draining human body fluid in operation. Specifically, the through holes 7 are arranged at intervals. In addition, as an alternative embodiment, only one or more through holes 7 may be provided.

As shown in fig. 1, a straightening tube 5 is slidably sleeved on the middle section of the catheter body 1, and the straightening tube 5 is used for aligning the pigtail loop 2. Specifically, before stretching into the human body with catheter body 1, will rectify straight tube 5 and slide towards pigtail ring 2, through the restriction of rectifying straight tube 5 with carry out the collimation to pigtail ring 2 to be convenient for more that catheter body 1 inserts towards the human body. After the pigtail loop 2 of the catheter body 1 is inserted in place, the straightening tube 5 is slid toward the proximal end close to the operation end to release the pigtail loop 2 so that it returns to an unclosed loop shape.

In addition, as a preferable embodiment, the outer wall of the straightening tube 5 facing one end of the pigtail loop 2 has a taper 6. Through the taper 6, the straightening pipe 5 behind the collimation pigtail loop 2 can enter a human body more easily.

As shown in figure 1, the middle section of the catheter body 1 is provided with scales for displaying the length, and when the operation is carried out, the scales can be used for accurately judging the position of the pigtail loop 2 reaching the human body, so that the convenience of the operation is improved.

As shown in fig. 1, in the pigtail catheter provided in this embodiment, the straightening tube 5 may be provided with a through opening along the axial direction, and the straightening tube 5 can be broken through the opening, so that the straightening tube 5 is detached from the catheter body 1, thereby avoiding inconvenience of the patient caused by the straightening tube 5 being hung outside the human body.

In addition, as an alternative embodiment, in the pigtail catheter provided in this embodiment, two ends of the catheter body 1 may be provided with pigtail loops 2, and the inner root of the pigtail loop 2 may be selectively provided with the support structure 3, so as to form a guide tube of the double pigtail loops 2.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the present invention.

Claims

1. A pigtail catheter, comprising: the catheter comprises a catheter body (1), wherein a pigtail loop (2) is arranged at the free end of the catheter body (1), and the pigtail loop (2) is in a non-closed ring shape formed by elastically bending the free end of the catheter;

the catheter body (1) is provided with a supporting structure (3) which elastically deforms outwards along the radial direction in the ring of the pigtail ring (2).

2. A pigtail catheter according to claim 1, wherein the support structure (3) is arranged at the root of the pigtail loop (2).

3. The pigtail catheter of claim 1, wherein the support structure (3) is a sheet (4) formed by axially cutting the side wall of the catheter, and the middle part of the sheet (4) is elastically bent outwards to form a support.

4. The pigtail catheter of claim 3, wherein the sheet (4) is provided in a plurality evenly arranged in the circumferential direction of the catheter.

5. The pigtail catheter of claim 4, wherein the sheet (4) has four.

6. A pigtail conduit according to any of claims 1-5, wherein the inside wall of the pigtail loop (2) has a through hole (7) leading to the interior of the conduit.

7. The pigtail catheter of claim 6, wherein the through-hole (7) has a plurality of holes arranged at intervals.

8. A pigtail catheter according to any of claims 1-5, wherein the middle section of the catheter body (1) is slidably sleeved with a straightening tube (5), through which straightening tube (5) the pigtail loop (2) is aligned.

9. The pigtail catheter of claim 8, wherein the outer wall of the straightening tube (5) towards the end of the pigtail loop (2) has a taper (6).

10. The pigtail catheter of any of claims 1-5, wherein the middle section of the catheter body (1) is provided with a scale for displaying the length.