PICC (Peripherally Inserted Central Catheter) fixing device

Abstract

The utility model relates to the field of medical instruments, in particular to a PICC (Peripherally Inserted Central Catheter) fixing device which comprises a buckle seat, a buckle cover, a fixed positioning pin and a sliding positioning pin. According to the PICC central venous catheter fixing device, one end of the buckle cover is flexibly connected with one end of the buckle base in a freely opening and closing mode, and the other end of the buckle cover is detachably connected with the other end of the buckle base in a buckled mode. The sliding positioning pin is arranged on the buckle base in a sliding mode, can adjust the position between the sliding positioning pin and the fixed positioning pin, is used for clamping the distance between the PICC and is used for being matched with the distance between two positioning holes of PICC fins of different specifications, the universality of the catheter is greatly improved, the structure is more stable, and the situation of deflection is not prone to occurring.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, and particularly relates to a PICC central venous catheter fixing device. BACKGROUND

[0002] The peripherally inserted central catheter (PICC) can provide a safe and convenient venous access for tumor patients, the catheter tip of which is located in the superior vena cava or the subclavian vein, so as to effectively avoid the blood vessel injury caused by long-term infusion or infusion of chemotherapy drugs, and also reduce the local tissue stimulation, and is a commonly recommended venous infusion method in the clinic. However, the catheter may be blocked or partially detached due to improper nursing, lack of knowledge of the patient, and other reasons during use, and the incidence of catheter detachment can reach 5%-31%, which hinders the development of clinical work. In order to prevent the catheter from detaching and shifting during treatment, there are various methods for fixing the catheter on the patient's body. Common catheter fixing methods include external suture, bandage fixing method and adhesive tape fixing method. The external suture fixing method is to suture the external part of the catheter to the skin with surgical thread, so that the catheter does not shift and fall off. The disadvantage of the external suture method is that the suture time is relatively long, and repeated skin puncture, knotting and other complicated operations are required, which increases the pain of the patient, and also leaves suture scars on the skin of the patient, affecting the appearance and causing heavy psychological burden to the patient. The bandage fixing method also requires knotting and other operations, making the operation complicated, and the steps for removal are also relatively complicated. The adhesive tape fixing method is easy to detach and shift, and causes mechanical phlebitis.

[0003] At present, there are central venous catheter fixators on the market, which can solve the above problems to a certain extent, but most of them do not have the function of adjusting the positioning shaft, cannot fix various central venous catheters, and do not have applicability. And the current central venous catheter fixator basically adopts a double-opening cover structure, and the buckle structure is in the middle, so the operation area space is too small and the fingers are not easy to operate. SUMMARY

[0004] To solve the above problems, the purpose of the utility model is to provide a PICC central venous catheter fixing device.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] The utility model provides a PICC central venous catheter fixing device, comprising: a buckle seat, a buckle cover, a fixed positioning pin, and a sliding positioning pin; one end of the buckle cover is flexibly connected to one end of the buckle seat so as to be opened and closed at will, and the other end of the buckle cover is detachably connected to the other end of the buckle seat; the buckle seat is provided with a fixed positioning pin, and the sliding positioning pin is slidably arranged on the buckle seat and the distance between the sliding positioning pin and the fixed positioning pin is adjustable for clamping the PICC central venous catheter;

[0007] The buckle seat is provided with a positioning pin hole that passes through from top to bottom. The sliding positioning pin includes a pin rod, a connecting rod, a rotating shaft, and a hemispherical structure. The lower end of the pin rod is connected to the horizontal connecting rod, the lower end of the connecting rod is connected to the vertical rotating shaft, and the other end of the rotating shaft is connected to the hemispherical structure. The rotating shaft passes through the positioning pin hole, and the connecting rod and hemispherical structure are respectively located on the upper and lower surfaces of the buckle seat.

[0008] Furthermore, the device also includes an applicator, the buckle seat is connected to the upper end surface of the applicator, and the lower end surface of the applicator is the applicator surface.

[0009] Furthermore, the patch is in the shape of a butterfly-shaped sheet and is provided with breathable micropores.

[0010] Furthermore, the buckle cover is provided with an arc-shaped groove for facilitating the sliding limitation of the pin rod.

[0011] Furthermore, vertical edge structures are provided on the four peripheries of the buckle seat, and the interior of the buckle seat is divided into a fixed area.

[0012] Furthermore, a recess for accommodating wing fixing posts of different diameters of PICC catheters is provided at a middle position of the buckle cover corresponding to the buckle seat.

[0013] Furthermore, a latch pin is provided on the buckle seat, and a latch tooth is provided on the card cover, and the latch pin and the latch tooth are detachably latched together.

[0014] Furthermore, a long strip-shaped protrusion is provided on the buckle seat, one end of the protrusion is an outward circular structure, and the other end is an inward circular structure; a fixed positioning pin is provided on the protrusion, and a fixing hole for limiting the fixed positioning pin is opened on the buckle cover.

[0015] Furthermore, one end of the buckle cover and one end of the buckle seat are provided with a deformation fold to achieve a flexible connection that can be opened and closed at will.

[0016] Furthermore, the buckle cover is provided with a handle flap for easy buckling.

[0017] In the PICC central venous catheter fixing device of the present invention, one end of the buckle cover is flexibly connected to one end of the buckle seat so as to be opened and closed at will, and the other end of the buckle cover is detachably buckled to the other end of the buckle seat. The sliding positioning pin is slidably arranged on the buckle seat, and the distance between the sliding positioning pin and the fixed positioning pin for clamping the PICC central venous catheter can be adjusted, and is used to adapt to the distance between the two positioning holes of the wing of the PICC central venous catheter of different specifications, which greatly increases the versatility of the catheter, makes the structure more stable, and is not prone to skewing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 This is a three-dimensional diagram of the PICC central venous catheter fixing device of the utility model in one state;

[0020] Figure 2 This is a three-dimensional diagram of the PICC central venous catheter fixing device of the utility model in another state;

[0021] Figure 3 This is a three-dimensional diagram of the PICC central venous catheter fixing device of the utility model in another state;

[0022] Figure 4 This is a structural diagram of the sliding positioning pin in the PICC central venous catheter fixing device of the utility model;

[0023] Figure 5 This is a structural diagram of the buckle seat in the sliding positioning pin of the PICC central venous catheter fixing device of the utility model;

[0024] Figure 6 This is a structural diagram of a buckle seat in a sliding positioning pin in a PICC central venous catheter fixing device of the present invention;

[0025] The accompanying drawings are marked as follows: 1. buckle seat; 2. buckle cover; 3. fixed positioning pin; 4. sliding positioning pin; 5. application; 6. micropore; 7. pin rod; 8. connecting rod; 9. rotating shaft; 10. hemispherical structure; 11. arc-shaped groove; 12. vertical edge; 13. latch pin; 14. latch tooth; 15. protrusion; 16. fixing hole; 17. deformation fold; 18. handle petal; 19. notch; 20. square hole; 21. clearance groove; 22. positioning pin hole. DETAILED DESCRIPTION

[0026] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0027] like Figures 1 to 6 As shown, this device primarily secures PICC central venous catheters. It consists of a buckle holder 1, a buckle cover 2, a positioning pin, and an applicator 5. The applicator 5 is a butterfly-shaped sheet, bonded to the buckle holder 1 and the applicator 5 with medical adhesive. The bottom surface of the applicator 5 is attached to the patient's skin for secure attachment. To prevent skin damage from prolonged application, the applicator 5 is perforated with micropores 6 for ventilation.

[0028] The buckle base 1 is surrounded by four vertical edges 12, dividing the interior of the buckle base 1 into a fixed area. These edges 12 serve to strengthen the buckle base 1. One side of the buckle base 1 is open, and latch pins 13 are located on either side of the vertical edges 12 to securely engage the buckle cover 2 with the buckle base 1. These latch pins 13 protrude approximately 2mm from the vertical edges 12, forming a 110-degree flat surface. This ensures a secure hold on the latch teeth 14 while allowing for easy opening of the buckle cover 2.

[0029] The internal structure of the fixed area of ​​the buckle seat 1: a notch 19 structure of a certain width is designed in the middle of the vertical edge 12 in the front-to-back direction in order to leave enough space for the PICC catheter fixed wing structure. There is a long strip-shaped protrusion 15 at the center of the bottom plate of the buckle seat 1 of this device. One end of the protrusion 15 is an outward circular structure, and the other end is an inward circular structure. This design is mainly to reduce the weight of the device, provide support and fixation for the fixed positioning pin 3, and at the same time limit the sliding positioning pin 4. At the left side of the bottom surface protrusion 15 of the buckle seat 1 in this area, a cylindrical fixed positioning pin 3 of a certain length is fixed vertically upward. At the right side of the bottom surface of the buckle seat 1 in this area, there is a bottom-through positioning pin hole 22, and the positioning pin hole 22 is fixed with an inverted Z-shaped sliding positioning pin 4 that can swing in a fan shape around the positioning pin hole 22.

[0030] The sliding locating pin 4 includes a vertical axial pin rod 7 of a certain length, the lower end of the pin rod 7 is fixedly connected to a horizontal connecting rod 8, the other end of the connecting rod 8 is fixedly connected downward to a shorter rotating shaft 9, and the lower end of the rotating shaft 9 is designed with a hemispherical structure 10 similar to a mushroom head. The rotating shaft 9 and the mushroom head are inserted into the locating pin hole 22 of the buckle seat 1, and the sliding locating pin 4 can swing with the locating pin hole 22 as the center of the circle. The swing angle swings between the inward circular structure at one end of the long strip protrusion 15 and the low vertical edge 12 on the left side of the buckle seat 1. As the sliding locating pin 4 swings, the spacing between the fixed locating pin 3 and the pin rod 7 of the sliding locating pin 4 can be flexibly adjusted to adapt to the fixed wings of PICC central venous catheters with different spacing sizes, thereby realizing the fixation of catheters of multiple specifications.

[0031] Two square holes 20 penetrate the right side of the device's base, near vertical edge 12. These holes are reserved for mold ejector pins and also reduce the device's weight. A semicircular, outward-facing notch at the front of the base allows for a smooth transition between the PICC catheter and the skin insertion site after it is secured within the device.

[0032] The left side of the buckle cover 2 of the device is provided with a deformation fold 17 that is continuous in front and back and is connected to the buckle seat 1. The deformation fold 17 allows the buckle cover 2 to be opened and closed at will in the deformation section. The buckle cover 2 is like the arched roof of a car, and the bottom of the buckle cover 2 is a flat bottom structure. A clearance groove 21 is provided at the bottom of the buckle cover 2 corresponding to the notch 19 in the middle of the buckle seat 1 to accommodate wing fixing columns of different diameters of the PICC catheter. A circular fixing hole 16 is provided at the fixed positioning pin 3 corresponding to the buckle seat 1, and the slopes of the arched top on both sides of the fixing hole 16 are hollowed out along the slope. There is an arc-shaped groove 11 corresponding to the pin rod 7, and the arched slopes on both sides of the arc-shaped groove 11 are also hollowed out. The hollowing is mainly done to reduce the weight of the device and save material costs.

[0033] When the cover 2 is fastened to the base 1, the circular fixing hole 16 and arc-shaped groove 11 of the cover 2 effectively retain the pin 7. Two latching teeth 14, located on the bottom surface of the cover 2 and corresponding to the latching pin 13, engage with the latching pin 13 of the base 1 to secure the PICC central catheter. Next to the two latching teeth 14 of the cover 2 of this device is a handle 18 for easy opening, allowing for easy removal of the cover 2 for catheter removal.

[0034] When it is necessary to use this device to fix the PICC central venous catheter, stick the device patch 5 on the skin of the patient's central venous catheter wing, pull the handle flap 18 to open the buckle cover 2, place the catheter wing in the buckle seat 1, slide the pin rod 7 so that the distance between the fixed positioning pin 3 and the sliding positioning pin 4 just corresponds to the distance between the wing positioning holes on both sides of the catheter, insert the two positioning holes of the catheter wing onto the pin rod 7 of the fixed positioning pin 3 and the sliding positioning pin 4, so that the catheter is positioned through the wing positioning holes, close the buckle cover 2 to lock the teeth, thereby completing the fixation of the PICC central venous catheter.

[0035] Directions:

[0036] 1. Open the package and buckle the upper cover 2 of the device.

[0037] 2. Place the fixed wing assembly of the PICC central venous catheter into this device. First, insert the round hole on one side of the fixed wing into the fixed positioning pin 3 in the buckle seat 1 of this device. Adjust the sliding positioning pin 4 on the other side according to the spacing between the round holes on both sides of the fixed wing. Then insert the round hole of the wing on the other side into the sliding positioning pin 4. Finally, cover the buckle cover 2 of this device and press the buckle cover 2 tightly. When you hear a click, it indicates that the buckle cover 2 is engaged and fixed with the buckle seat 1.

[0038] 3. Tear off the release paper of the butterfly-shaped dressing 5, apply it to the skin surface according to the intersection of the PICC central venous catheter and the skin, and smooth and press it tightly.

[0039] 4. The outer packaging, i.e. the release paper, can be disposed of as general garbage.

[0040] The innovative technical points and beneficial effects of this utility model are at least:

[0041] 1. The arc-shaped sliding positioning pin 4 within the buckle 1 adjusts the spacing between the two positioning pins, adapting to the spacing between the two positioning holes of the wing of PICC central venous catheters of different specifications, greatly increasing the versatility of the catheter. Furthermore, the use of a rotating shaft 9 as the center of rotation, with the connecting rod 8 driving the pin 7 to rotate, makes the structure more stable and less prone to skew compared to traditional fixators that cannot be adjusted or require linear push-pull adjustment.

[0042] 2. The buckle cover 2 of this device adopts a one-piece structure, which can fully surround and fix the PICC catheter and avoid the repeated operation of two pressing pieces. It is stable and reliable, saving time and effort.

[0043] 3. The manual buckle-opening structure of the buckle cover 2 and the buckle seat 1 of this device is placed separately on the right side of the device, so that the doctor's fingers have enough space to control the hand-held flap buckle to open the buckle cover 2. Compared with the traditional fixator with manual double-opening buckle structures in the middle, the operable area is too small and difficult to operate with fingers, this device greatly improves the convenience of manual operation.

[0044] 4. The design concept of this device is simple in structure, and there are only two parts that need to be molded. The production cost is low and the assembly difficulty is low. Compared with traditional fixers, this device simplifies the production difficulty and greatly reduces the cost.

[0045] 5. The semicircular notch on the bottom plate of the buckle seat 1 facilitates the bending deformation of the PICC central catheter when it is inserted obliquely into the body.

[0046] 6. The enlarged opening handle 18 on the right side of the buckle cover 2 is conducive to easily opening the buckle cover 2 and evacuating the device.

[0047] 7. The butterfly-shaped patch 5 is perforated to minimize the effects of long-term application on the patient's skin such as skin ulceration.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A PICC central venous catheter fixing device, characterized in that: include: A buckle seat, a buckle cover, a fixed positioning pin, and a sliding positioning pin; one end of the buckle cover is flexibly connected to one end of the buckle seat so as to be opened and closed at will, and the other end of the buckle cover is detachably snap-connected to the other end of the buckle seat; the buckle seat is provided with the fixed positioning pin, and the sliding positioning pin is slidably provided on the buckle seat and the distance between the sliding positioning pin and the fixed positioning pin for clamping the PICC central venous catheter can be adjusted.

2. The PICC central venous catheter fixing device according to claim 1, characterized in that: The PICC central venous catheter fixing device also includes an application, the buckle seat is connected to the upper end surface of the application, and the lower end surface of the application is an application surface.

3. The PICC central venous catheter fixing device according to claim 2, characterized in that: The patch is in the shape of a butterfly-shaped sheet and is provided with breathable micropores.

4. The PICC central venous catheter fixing device according to claim 1, characterized in that: The buckle seat is provided with a positioning pin hole that passes through from top to bottom. The sliding positioning pin includes a pin rod, a connecting rod, a rotating shaft, and a hemispherical structure. The lower end of the pin rod is connected to the horizontal connecting rod, the lower end of the connecting rod is connected to the vertical rotating shaft, and the other end of the rotating shaft is connected to the hemispherical structure. The rotating shaft passes through the positioning pin hole, and the connecting rod and hemispherical structure are respectively located on the upper and lower surfaces of the buckle seat.

5. The PICC central venous catheter fixing device according to claim 4, characterized in that: The buckle cover is provided with an arc-shaped groove for facilitating the sliding and limiting position of the pin rod.

6. The PICC central venous catheter fixing device according to claim 1, characterized in that: The four peripheries of the buckle seat are provided with vertical edge structures, and the interior of the buckle seat is divided into a fixed area.

7. The PICC central venous catheter fixing device according to claim 1, characterized in that: The buckle seat is provided with a latch pin, and the latch pin is provided with a latch tooth. The latch pin and the latch tooth are detachably latched and connected.

8. The PICC central venous catheter fixing device according to claim 1, characterized in that: The buckle seat is provided with a long strip-shaped protrusion, one end of the protrusion is an outward circular structure, and the other end is an inward circular structure; the protrusion is provided with the fixed positioning pin, and the buckle cover is provided with a fixing hole for limiting the fixed positioning pin.

9. The PICC central venous catheter fixing device according to claim 1, characterized in that: One end of the buckle cover and one end of the buckle seat are provided with a deformation fold to achieve a flexible connection that can be opened and closed at will.

10. The PICC central venous catheter fixing device according to claim 1, characterized in that: The buckle cover is provided with a handle flap for easy buckling.

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