Peritoneal dialysis indwelling catheter fixing line guiding device

Abstract

The utility model discloses a peritoneal dialysis indwelling catheter fixing line guiding device, which relates to the technical field of medical instruments and comprises a handle, and the outer part of the handle is connected with a moving block in a sliding manner; a puncture needle head is slidably connected into the blunt needle head, and a threading hole is formed in the blunt needle head; one end of the bent rod needle is fixedly connected with the handle, and the other end is fixedly connected with the blunt needle head; the flexible steel cable is slidably connected into the bent rod needle, one end of the flexible steel cable is connected with the moving block, and the other end of the flexible steel cable is connected with the puncture needle head. According to the peritoneal dialysis indwelling catheter, the guide device penetrates through the abdominal wall from the inside of the abdominal cavity to guide the fixing line, the effect of reducing the wound of an opening is achieved, meanwhile, the indwelling catheter position is rapidly fixed, the problem that an existing peritoneal dialysis indwelling catheter is prone to drifting and shifting is solved, and when puncture is not carried out, the puncture needle is shrunk inside the blunt needle, so that the puncture needle is not damaged. The guide device is simple in design, convenient to operate, stable, reliable and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a peritoneal dialysis catheter fixing line guide. Background Art

[0002] Peritoneal dialysis is a treatment method that uses the body's own peritoneum as a semipermeable dialysis membrane. It has now developed into one of the important treatments for end-stage renal disease. Compared with hemodialysis, peritoneal dialysis is more conducive to protecting residual renal function, has less impact on patients' lives and work, and has developed rapidly in recent years. Peritoneal dialysis catheter patency is the primary link in maintaining peritoneal dialysis treatment. In clinical practice, whether the peritoneal dialysis catheter is placed in the pelvic cavity by laparotomy or percutaneous puncture technology, there are complications such as catheter drift and displacement, and omental wrapping. Once the catheter drifts and displaces, it will lead to abnormal function of the peritoneal dialysis catheter and the inability to empty the peritoneal dialysis fluid. The patient needs to stop peritoneal dialysis and undergo catheter repositioning treatment or even a second surgery.

[0003] To prevent peritoneal dialysis catheters from drifting, a fixation line is typically used to secure the lower segment of the catheter. During surgery, an opening is made approximately three centimeters below the purse. Using hemostats, the ends of the line are guided through the purse along the abdominal wall to the lower opening. The catheter is then inserted through the bend in the line. The ends of the line, which pass through the peritoneum, are pulled to secure the line at the bend. This method, using hemostats, results in significant incision and is difficult to suture. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art and to propose a peritoneal dialysis catheter fixing line guide which reduces opening trauma and ensures rapid fixation of the catheter position.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A peritoneal dialysis catheter fixing line guide, comprising:

[0007] a handle having a moving block slidably connected to the outside thereof;

[0008] A blunt needle, the interior of which is slidably connected to a puncture needle, and the blunt needle is provided with a threading hole;

[0009] A curved needle, one end of which is fixedly connected to the handle and the other end of which is fixedly connected to the blunt needle;

[0010] And a flexible steel cable, the flexible steel cable is slidably connected to the inside of the curved rod needle, one end of the flexible steel cable is connected to the moving block, and the other end is connected to the puncture needle. The moving block is pushed so that the flexible steel cable pushes the puncture needle to extend from the inside of the blunt needle.

[0011] Furthermore, the curved needle is C-shaped.

[0012] Furthermore, the central axis of the handle is arranged perpendicular to the plane where the axis of the curved rod needle is located.

[0013] Furthermore, a through hole is provided inside the curved rod needle, and the flexible steel cable is slidably connected to the inside of the through hole.

[0014] Furthermore, the outer diameter of the flexible steel cable is the same as the inner diameter of the through hole.

[0015] Furthermore, the flexible steel cable is formed by spirally twisting a plurality of thin steel wires.

[0016] Furthermore, the blunt needle is in the shape of a truncated cone, and a rounded corner is provided on the top edge portion, and the lower end of the blunt needle is smoothly connected to the curved rod needle.

[0017] Furthermore, a sliding groove is provided at the upper end of the blunt needle, and the puncture needle is slidably connected to the inside of the sliding groove. The top of the puncture needle is needle-shaped, and one end of the flexible steel cable extends into the inside of the sliding groove and is fixedly connected to the bottom end of the puncture needle.

[0018] Furthermore, a slot is provided on the outside of the handle near one end of the curved rod needle, the moving block is slidably connected to the inside of the slot, and one end of the flexible steel cable extends to the inside of the slot and is fixedly connected to the moving block.

[0019] Furthermore, the outer ring of the handle is provided with anti-slip grooves.

[0020] The beneficial effects of the utility model are:

[0021] In the utility model, a peritoneal dialysis catheter fixing wire guider ties one end of the fixing wire to the lower section of the peritoneal dialysis catheter, and the other end passes through a threading hole. During surgery, after the catheter is placed in the abdominal cavity, the guide is passed from the abdominal cavity through the abdominal wall, and the other end of the fixing wire is brought out of the body under the guidance of the guide. The fixing wire is then fixed to the abdominal wall. The guider reduces the trauma of the opening while ensuring the rapid fixation of the catheter placement position during peritoneal dialysis catheter placement surgery, thereby solving the problem of easy drift and displacement of the existing peritoneal dialysis catheter.

[0022] When the introducer passes through the abdominal wall from the abdominal cavity, the blunt needle is first moved to a designated position in the abdominal cavity by the C-shaped curved rod needle, and then the top needle of the puncture needle is extended by pushing the moving block to form a puncture head with the blunt needle, so that the introducer can pass through the abdominal wall from the abdominal cavity to guide the fixed line. When no puncture is performed, the puncture needle is retracted inside the blunt needle, thereby effectively avoiding damage to human organs when the blunt needle moves in the human abdomen. The introducer is simple in design, easy to operate, stable and reliable, and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a schematic diagram of the three-dimensional structure of a peritoneal dialysis catheter fixing line guide proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of a peritoneal dialysis catheter fixing line guide proposed by the present invention when the puncture needle is extended;

[0025] Figure 3 This is a schematic cross-sectional view of the curved rod needle and blunt needle of a peritoneal dialysis catheter fixation line guide proposed by the present invention;

[0026] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A;

[0027] Figure 5 This is a schematic cross-sectional view of the curved needle and blunt needle of a peritoneal dialysis catheter fixation line guider proposed by the present invention when the puncture needle is extended;

[0028] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of part B.

[0029] In the figure: 1 handle, 101 anti-slip groove, 2 moving block, 3 curved rod needle, 301 through hole, 4 blunt needle, 5 threading hole, 6 puncture needle, 7 flexible steel cable. DETAILED DESCRIPTION

[0030] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0031] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this patent 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. Therefore, they should not be understood as limitations on this patent.

[0033] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0034] Reference Figure 1-6 A peritoneal dialysis catheter fixation line guide is used to guide the fixation line when fixing the peritoneal dialysis catheter, in order to reduce the opening trauma and avoid damage to the abdominal organs.

[0035] The peritoneal dialysis catheter fixing line guide comprises a handle 1, a blunt needle 4, a curved needle 3 and a flexible steel cable 7;

[0036] The outer ring of the handle 1 is provided with anti-slip grooves 101 to enhance the anti-slip effect of the handle 1 and facilitate holding the handle 1 for puncture.

[0037] The curved rod needle 3 is C-shaped, which is convenient for the guide to pass through the abdominal cavity. One end of the curved rod needle 3 is fixedly connected to the handle 1 and the other end is fixedly connected to the blunt needle 4. The central axis of the handle 1 is arranged perpendicular to the plane where the axis of the curved rod needle 3 is located. A through hole 301 is provided inside the curved rod needle 3, and the flexible steel cable 7 is slidably connected to the inside of the through hole 301. The outer diameter of the flexible steel cable 7 is the same as the inner diameter of the through hole 301, so that the flexible steel cable 7 can move along the curved through hole 301 inside the curved rod needle 3 to avoid bending of the flexible steel cable 7. The flexible steel cable 7 is spirally twisted by multiple strands of fine steel wire, which facilitates the transmission of force by the flexible steel cable 7 and avoids bending during puncture.

[0038] A slot is provided on the outside of the handle 1 near one end of the curved rod needle 3, and the moving block 2 is slidably connected to the inside of the slot. One end of the flexible steel cable 7 extends to the inside of the slot and is fixedly connected to the moving block 2. When holding the handle 1, pushing the moving block 2 can make the flexible steel cable 7 move inside the through hole 301.

[0039] The blunt needle 4 is provided with a threading hole 5, which is convenient for inserting one end of the fixing line to guide the fixing line. The blunt needle 4 is truncated cone-shaped, and the top edge is provided with rounded corners, so as to avoid the blunt needle 4 causing damage to human organs when moving in the human abdomen. The lower end of the blunt needle 4 is smoothly connected to the curved rod needle 3.

[0040] A sliding groove is provided at the upper end of the blunt needle 4, and the puncture needle 6 is slidably connected to the inside of the sliding groove. The top of the puncture needle 6 is needle-shaped, and one end of the flexible steel cable 7 extends to the inside of the sliding groove and is fixedly connected to the bottom end of the puncture needle 6. The flexible steel cable 7 moving inside the through hole 301 can push the puncture needle 6 to slide inside the sliding groove, thereby extending the top needle of the puncture needle 6, facilitating puncture and guiding the fixed line.

[0041] The working principle of the peritoneal dialysis catheter fixing wire guide is as follows: when in use, one end of the fixing wire is tied to the lower section of the peritoneal dialysis catheter, and the other end is passed through the threading hole 5. During surgery, after the catheter is placed in the abdominal cavity, the guide is passed from the abdominal cavity through the abdominal wall. The other end of the fixing wire is brought out of the body under the guidance of the guide, and then the fixing wire is fixed to the abdominal wall, thereby achieving the purpose of fixing the position of the lower section of the peritoneal dialysis catheter;

[0042] When the guide passes through the abdominal wall from the abdominal cavity, the blunt needle 4 is first brought to the designated position in the abdominal cavity through the C-shaped curved rod needle 3, and then the moving block 2 is pushed by the thumb holding the handle 1, and the moving block 2 moves inside the slot, so that the flexible steel cable 7 moves along the through hole 301. The other end of the flexible steel cable 7 will push the puncture needle 6, so that the puncture needle 6 slides inside the sliding groove, so that the top needle tip of the puncture needle 6 extends from the blunt needle 4, thereby forming a puncture head with the blunt needle 4. At this time, the guide can be passed through the abdominal wall from the abdominal cavity through the puncture needle 6, and one end of the fixed line can be brought out of the body.

[0043] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A peritoneal dialysis catheter fixing line guide, characterized in that: include: A handle (1) having a movable block (2) slidably connected to the outside of the handle; A blunt needle (4) is slidably connected to a puncture needle (6) inside the blunt needle (4), and a threading hole (5) is provided on the blunt needle (4); A curved needle (3), one end of which is fixedly connected to the handle (1) and the other end of which is fixedly connected to the blunt needle (4); and a flexible steel cable (7), wherein the flexible steel cable (7) is slidably connected to the interior of the curved rod needle (3), one end of the flexible steel cable (7) is connected to the moving block (2), and the other end is connected to the puncture needle (6), and the moving block (2) is pushed so that the flexible steel cable (7) pushes the puncture needle (6) to extend from the interior of the blunt needle (4).

2. The peritoneal dialysis catheter fixing wire guide according to claim 1, characterized in that: The curved needle (3) is in a C shape.

3. The peritoneal dialysis catheter fixing wire guide according to claim 1, characterized in that: The central axis of the handle (1) is arranged perpendicular to the plane where the axis of the curved needle (3) is located.

4. The peritoneal dialysis catheter fixing wire guide according to claim 1, characterized in that: A through hole (301) is provided inside the curved rod needle (3), and the flexible steel cable (7) is slidably connected to the inside of the through hole (301).

5. The peritoneal dialysis catheter fixing wire guide according to claim 4, characterized in that: The outer diameter of the flexible steel cable (7) is the same as the inner diameter of the through hole (301).

6. The peritoneal dialysis catheter fixing wire guide according to claim 1, characterized in that: The flexible steel cable (7) is formed by spirally twisting a plurality of thin steel wires.

7. The peritoneal dialysis catheter fixing wire guide according to claim 1, characterized in that: The blunt needle (4) is in the shape of a truncated cone, and a rounded corner is provided at the top edge. The lower end of the blunt needle (4) is smoothly connected to the curved needle (3).

8. The peritoneal dialysis catheter fixing wire guide according to claim 1, characterized in that: The upper end of the blunt needle (4) is provided with a sliding groove, the puncture needle (6) is slidably connected to the inside of the sliding groove, the top of the puncture needle (6) is needle-shaped, and one end of the flexible steel cable (7) extends to the inside of the sliding groove and is fixedly connected to the bottom end of the puncture needle (6).

9. The peritoneal dialysis catheter fixing wire guide according to claim 1, characterized in that: A slot is provided on the outside of the handle (1) near one end of the curved rod needle (3), the moving block (2) is slidably connected to the inside of the slot, and one end of the flexible steel cable (7) extends to the inside of the slot and is fixedly connected to the moving block (2).

10. The peritoneal dialysis catheter fixing wire guide according to claim 1, characterized in that: The outer ring of the handle (1) is provided with anti-slip grooves (101).

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