PICC (Peripherally Inserted Central Catheter) fixator

Abstract

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

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and in particular to a PICC central venous catheter fixer. Background Art

[0002] A peripherally inserted central catheter (PICC) provides safe and convenient venous access for cancer patients. Its tip is located in the superior vena cava or subclavian vein, effectively preventing vascular damage associated with long-term infusions of fluids or chemotherapy drugs while also minimizing local tissue irritation. It is currently the most widely recommended intravenous infusion method in clinical practice. However, problems such as catheter blockage and partial dislodgement can occur during use due to various factors, such as improper care and lack of patient knowledge. Catheter dislodgement occurs in an incidence of 5%-31%, hindering clinical practice. To prevent catheter dislodgement and migration during treatment, various methods are currently available to secure the catheter to the patient. Common catheter fixation methods include external suturing, bandage fixation, and adhesive tape fixation. External suturing involves suturing the external portion of the catheter to the skin with surgical sutures to prevent dislodgement. Disadvantages of external suturing include prolonged suturing time and the tedious process of repeated skin punctures and knot tying, which increases pain for the patient. It also leaves suture scars on the skin, which are aesthetically pleasing and can cause significant psychological burden. Bandage fixation also requires knotting, making the procedure cumbersome and the removal process complex. Adhesive strip fixation is prone to dislodging and causing mechanical phlebitis.

[0003] Currently, there are central venous catheter (CVC) holders on the market that can address these issues to a certain extent. However, most lack axis adjustment, are unable to secure a wide range of CVCs, and are therefore not suitable for a wide range of applications. Furthermore, most CVC holders currently utilize a double-opening structure with the latch located in the middle, leaving a small accessible area and making it difficult for fingers to operate. Summary of the Invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a PICC central venous catheter fixer that can keep the patient in a stable side-lying position.

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

[0006] The utility model provides a PICC central venous catheter holder, 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 snap-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 movably arranged on the buckle seat, and the distance between the sliding positioning pin and the fixed positioning pin can be adjusted;

[0007] The buckle seat is provided with an arc-shaped sliding groove penetrating from top to bottom, a fan-shaped accommodation groove is formed on the lower end surface of the buckle seat, the arc edge of the arc-shaped sliding groove is opposite to the fan-shaped accommodation groove, a circular hole is formed on the buckle seat at the center of the fan-shaped accommodation groove, and the sliding positioning pin comprises a pin rod, a connecting rod, a rotating shaft and a limiting piece connected in sequence.

[0008] Further, the limiting piece comprises a hemispherical structure or a spherical structure.

[0009] Further, the lower end surface of the buckle cover is provided with an accommodation circular groove and an arc-shaped accommodation groove; when the buckle cover and the buckle seat are closed, the accommodation circular groove is opposite to the fixed positioning pin, and the arc-shaped accommodation groove is opposite to the arc-shaped sliding groove.

[0010] Further, one end of the buckle cover is flexibly connected to one end of the buckle seat through an arc-shaped bending section.

[0011] Further, the inner side of the bending section is a front-rear penetrating circular arc-shaped deformation accommodation groove, and a front-rear penetrating deformation corner groove is arranged at the middle position of the deformation accommodation groove.

[0012] Further, the other end of the buckle cover is provided with a V-shaped elastic flap, the V-shaped elastic flap is provided with a ratchet, the other end of the buckle seat is provided with a clamping tooth, and the V-shaped elastic flap is elastically deformed after being buckled with the other end of the buckle seat, so that the clamping tooth clamps the ratchet.

[0013] Further, the V-shaped elastic flap is connected with a hand-held flap.

[0014] Further, the lower end surface of the buckle cover is provided with compressed cotton, and the upper end surface of the buckle cover is provided with a reinforcing rib.

[0015] Further, the four peripheries of the buckle seat are provided with standing edge structures, and the inner part of the buckle seat is divided into a fixed region and a clamping region and is separated by a front-rear reinforcing standing edge.

[0016] Further, the device further comprises a patch, the buckle seat is connected to the upper end surface of the patch, and the lower end surface of the patch is a patch surface.

[0017] In the PICC central venous catheter fixing device, one end of the buckle cover is flexibly connected to one end of the buckle seat, the other end of the buckle cover is buckled to the other end of the buckle seat, a fixed positioning pin is arranged on the buckle seat, the sliding positioning pin is movably arranged on the buckle seat and can adjust the distance between the sliding positioning pin and the fixed positioning pin, is used for adapting the distance between the two positioning holes of the PICC central venous catheter wing piece of different specifications, greatly increases the universality of the catheter, and the structure is more stable and is not prone to skew. BRIEF DESCRIPTION OF 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 utility model PICC central venous catheter fixator;

[0020] Figure 2 This is a top view of the PICC central venous catheter fixator of the utility model;

[0021] Figure 3 This is a front view of the PICC central venous catheter fixer of the utility model;

[0022] Figure 4 This is a structural diagram of the buckle seat in the PICC central venous catheter fixator of the utility model;

[0023] Figure 5 This is a structural diagram of the buckle cover in the PICC central venous catheter fixator of the utility model;

[0024] Figure 6 This is a disconnected diagram of the buckle seat in the PICC central venous catheter fixator of the utility model;

[0025] Figure 7 This is a disconnection diagram of the PICC central venous catheter fixator of the utility model;

[0026] Figure 8 This is a structural diagram of the fan-shaped give-way groove in the PICC central venous catheter fixator of the utility model;

[0027] Figure 9 This is a structural diagram of the sliding positioning pin in the PICC central venous catheter fixator of the utility model;

[0028] The accompanying drawings are marked as follows: 1. buckle seat; 2. buckle cover; 3. fixed positioning pin; 4. sliding positioning pin; 5. arc-shaped slide groove; 6. fan-shaped give way groove; 7. round hole; 8. pin rod; 9. connecting rod; 10. rotating shaft; 11. hemispherical structure; 12. give way circular groove; 13. arc-shaped give way groove; 14. deformation give way groove; 15. deformation angle groove; 16. V-shaped spring flap; 17. ratchet; 18. latch; 19. hand-held flap; 20. pressing cotton; 21. reinforcing rib; 22. vertical edge structure; 23. reinforced vertical edge; 24. application. DETAILED DESCRIPTION

[0029] In order for the person skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0030] As shown in the drawings, Figures 1 to 9 The PICC central venous catheter fixing device of the embodiment of the present application comprises: a buckle seat 1, a buckle cover 2, a fixed positioning pin 3, and a sliding positioning pin 4. One end of the buckle cover 2 is flexibly connected with one end of the buckle seat 1 in a freely openable and closable manner, the other end of the buckle cover 2 is snap-connected with the other end of the buckle seat 1, the fixed positioning pin 3 is arranged on the buckle seat 1, and the sliding positioning pin 4 is movably arranged on the buckle seat 1 and can adjust the distance between the sliding positioning pin 4 and the fixed positioning pin 3.

[0031] In the PICC central venous catheter fixing device of the present application, one end of the buckle cover 2 is flexibly connected with one end of the buckle seat 1 in a freely openable and closable manner, the other end of the buckle cover 2 is snap-connected with the other end of the buckle seat 1, the fixed positioning pin 3 is arranged on the buckle seat 1, and the sliding positioning pin 4 is movably arranged on the buckle seat 1 and can adjust the distance between the sliding positioning pin 4 and the fixed positioning pin 3. This is used for adapting to the distance between the two positioning holes of the PICC central venous catheter wing of different specifications, greatly increasing the universality of the catheter and making the structure more stable and less likely to be skewed.

[0032] Among them, the buckle seat 1 is provided with an arc-shaped sliding groove 5 penetrating through the upper and lower portions, the buckle seat 1 is provided with a fan-shaped accommodation groove 6 on the lower end surface, the arc-shaped sliding groove 5 is opposite to the arc edge position of the fan-shaped accommodation groove 6, the buckle seat 1 is provided with a circular hole 7 at the center of the fan-shaped accommodation groove 6, the sliding positioning pin 4 comprises a pin rod 8, a connecting rod 9, a rotating shaft 10 and a limiting piece which are connected in sequence; the limiting piece is arranged on the circular hole 7, the rotating shaft 10 penetrates the circular hole 7, the connecting rod 9 is swingably arranged in the fan-shaped accommodation groove 6, and the pin rod 8 is slidably arranged in the arc-shaped sliding groove 5 and extends out of the arc-shaped sliding groove 5.

[0033] Among them, the limiting piece comprises a hemispherical structure 11 or a spherical structure.

[0034] Among them, the buckle cover 2 is provided with an accommodation circular groove 12 and an arc-shaped accommodation groove 13 on the lower end surface; when the buckle cover 2 is closed with the buckle seat 1, the accommodation circular groove 12 is opposite to the fixed positioning pin 3, and the arc-shaped accommodation groove 13 is opposite to the arc-shaped sliding groove 5.

[0035] Among them, one end of the buckle cover 2 is flexibly connected with one end of the buckle seat 1 through an arc-shaped bending section.

[0036] The inner side of the bending section is an arc-shaped deformation clearance groove 14 that runs through the front and back, and a deformation angle groove 15 that runs through the front and back is provided in the middle of the deformation clearance groove 14 .

[0037] Among them, a V-shaped spring flap 16 is provided at the other end of the buckle cover 2, and a ratchet 17 is provided on the V-shaped spring flap 16. A locking tooth 18 is provided at the other end of the buckle seat 1. After the V-shaped spring flap 16 is pressed and locked with the other end of the buckle seat 1, the V-shaped spring flap 16 elastically deforms so that the locking tooth 18 locks the ratchet 17.

[0038] Among them, the V-shaped spring petal 16 is connected to the hand-held petal 19, the lower end surface of the buckle cover 2 is provided with a pressing cotton 20, and the upper end surface of the buckle cover 2 is provided with a reinforcing rib 21.

[0039] Among them, the four peripheries of the buckle seat 1 are provided with vertical edge structures 22, and the interior of the buckle seat 1 is divided into a fixed area and a buckle area and separated by reinforced vertical edges 23 in the front and rear directions.

[0040] The device further includes an application patch 24, the buckle seat 1 is connected to the upper end surface of the application patch 24, and the lower end surface of the application patch 24 is the application surface.

[0041] Specifically, the device is mainly used to fix a PICC central venous catheter. The device mainly consists of a patch 24, a buckle shell, a sliding positioning pin 4 and other structures. The patch 24 is a butterfly-shaped sheet with an application surface on the bottom, which is used to stick to the patient's skin for fixation.

[0042] A buckle shell is fixedly attached to the center of the patch 24. The buckle shell is wide in the left-right direction and short in the front-to-back direction, and its two sides are arc-shaped and convex outwards. The buckle shell is composed of a buckle base 1 and a buckle cover 2. A vertical edge structure 22 is set on the four peripheries of the buckle base 1. The buckle base 1 is divided into a fixed area and a snap-on area. These two areas are separated by a reinforced vertical edge 23 in the front-to-back direction. The vertical edge structure 22 and the reinforced vertical edge 23 are both used to increase the structural strength of the buckle base 1.

[0043] In the fixing area of ​​the buckle seat 1, a notch of a certain width is designed in the middle of the vertical edge structure 22 in the front-to-back direction. A cylindrical fixed positioning pin 3 of a certain length is fixed vertically upward on the left side of the bottom surface of the buckle seat 1 in this area. A curved chute 5 is provided on the right side of the bottom surface of the buckle seat 1 in this area, extending vertically. The curved chute 5 has a certain curvature. Directly below the curved chute 5, a fan-shaped clearance groove 6 of a certain depth is provided on the lower end surface of the bottom surface of the buckle seat 1. The curved chute 5 is located directly opposite the arc edge of the fan-shaped clearance groove 6. The inner center of the fan-shaped clearance groove 6 is located at the front side of the bottom surface, and a through-hole 7 is provided on the bottom surface directly above the center.

[0044] In the buckle area of ​​the buckle seat 1, a latching tooth 18 is provided at the top end of the right vertical side structure 22 in this area toward the inside, and the latching tooth 18 extends in the front-to-back direction.

[0045] The upper end of the vertical side structure 22 on the left side of the buckle seat 1 is connected to the buckle cover 2 through an arc-shaped bending section. The inner side of the bending section is designed as a deformation clearance groove 14 that is an arc-shaped recessed groove that runs through the front and back, and a deformation angle groove 15 that runs through the front and back is provided at the middle section of the deformation clearance groove 14. The deformation clearance groove 14 and the deformation angle groove 15 allow the buckle cover 2 to be opened and closed at will at the deformation section position. A recessed circular clearance groove 12 and an arc-shaped clearance groove 13 are provided on the lower end surface of the buckle cover 2. When the buckle cover 2 is closed, the circular clearance groove 12 is vertically opposite to the fixed positioning pin 3, and the arc-shaped clearance groove 13 is vertically opposite to the arc-shaped slide groove 5. The circular clearance groove 12 is a circular recessed groove of a certain depth that plays a role in giving way to the fixed positioning pin 3. The arc-shaped clearance groove 13 has the same curvature and width as the arc-shaped slide groove 5, and is recessed to a certain depth inside the lower end surface of the buckle cover 2. A V-shaped spring flap 16 is integrally fixedly connected to the right side of the buckle cover 2 , and a ratchet 17 is fixedly provided outwardly on the right side of the V-shaped spring flap 16 . The ratchet 17 is used to engage with the locking teeth 18 of the buckle seat 1 .

[0046] The V-shaped spring flap 16 has certain elastic deformation characteristics. When the buckle cover 2 is closed downward, the V-shaped spring flap 16 is compressed by the latch 18 through the ratchet 17, and the angular elasticity of the V-shaped spring flap 16 decreases. When the ratchet 17 is squeezed and moved to the lower part of the latch 18, the V-shaped spring flap 16 is elastically released and reset. The latch 18 has a locking effect on the ratchet 17, so that the buckle cover 2 is in a closed state. A hand-held flap 19 facing upward and outward is fixedly connected to the upper right side of the V-shaped spring flap 16 to facilitate the finger to press inward to open the buckle cover 2. A compression cotton 20 is glued and fixed to the lower end surface of the buckle cover 2 in the area between the circular groove 12 and the arc-shaped groove 13. The compression cotton 20 is a sponge with a sheet structure of a certain thickness, which is used to compress and fix the PICC central venous catheter fixed inside. A reinforcing rib 21 is provided on the upper end surface of the buckle cover 2.

[0047] A sliding positioning pin 4 is provided at the fan-shaped clearance groove 6 and the arc-shaped slide groove 5 of the buckle seat 1. The sliding positioning pin 4 includes a vertical axial pin rod 8 of a certain length. The lower end of the pin rod 8 is fixedly connected to a horizontal connecting rod 9. The other end of the connecting rod 9 is fixedly connected upward to a shorter rotating shaft 10. The upper end of the rotating shaft 10 is designed with a hemispherical structure 11 similar to a mushroom head. The rotating shaft 10 is inserted into the circular hole 7 of the buckle seat 1. The sliding positioning pin 4 can rotate with the circular hole 7 as the center of the circle. The pin rod 8 slides in the arc-shaped slide groove 5 of the buckle seat 1, and the connecting rod 9 swings in the fan-shaped clearance groove 6. As the sliding positioning pin 4 swings, the pin rod 8 slides in the arc-shaped slide groove 5, and the distance between the pin rods 8 of the fixed positioning pin 3 and the sliding positioning pin 4 can be flexibly adjusted.

[0048] When the device is needed to fix the PICC central venous catheter, the device is attached to the skin of the patient at the central venous catheter wing, the hand-held flap 19 is opened to open the buckle cover 2, the catheter wing is placed in the buckle seat 1, the pin rod 8 of the sliding positioning pin 4 is slid to adjust the distance between the fixed positioning pin 3 and the sliding positioning pin 4, the distance between the two positioning holes of the catheter wing is just corresponding to the distance between the two positioning holes of the catheter wing, the two positioning holes of the catheter wing are inserted into the pin rod 8 of the fixed positioning pin 3 and the sliding positioning pin 4, so that the catheter plays a positioning role through the wing positioning hole, the buckle cover 2 is closed and the ratchet 17 is clamped with the clamping tooth 18, and the compression cotton 20 at the lower end of the buckle cover 2 is compressed on the catheter wing, so that the fixing effect of the PICC central venous catheter is completed.

[0049] The innovative technical points and beneficial effects of the utility model are at least:

[0050] 1. The distance between the two positioning pins in the buckle seat 1 is adjusted in an arc swinging mode of the sliding positioning pin 4. It is used to adapt to the distance between the two positioning holes of the PICC central venous catheter wing of different specifications, greatly increasing the universality of the catheter. The rotating shaft 10 is used as the rotation center, and the connecting rod 9 drives the pin rod 8 to rotate. Compared with the traditional fixed device which cannot be adjusted or adjusted in a straight line, the structure is more stable and is not easy to be skewed.

[0051] 2. The buckle cover 2 of the buckle shell adopts a one-sided bending connection opening and closing compression fixing mode. Compared with the traditional structure opening and closing mode of left and right double covers, the device only needs to be compressed once to complete the compression fixing of the PICC central venous catheter. Compared with the traditional two-closing compression mode, the efficiency is higher, and the useless operation is reduced.

[0052] 3. The hand-controlled buckle opening structure of the buckle cover 2 and the buckle seat 1 is separately placed on the right side of the device, so that the fingers of the operating doctor have enough space to control the hand-held flap 19 to open the buckle cover 2. Compared with the traditional fixed device in which the hand-controlled buckle opening structure is in the middle, the operation area space is too small, and the fingers are not easy to operate. Compared with the traditional fixed device, the device greatly improves the convenience of hand-controlled operation.

[0053] 4. The device has a simplified structure, only two parts need to be opened, the production cost is low, and the assembly difficulty is low. Compared with the traditional fixed device, the device simplifies the production difficulty and greatly reduces the cost.

[0054] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary technical personnel in the technical field, without departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements should be regarded as the protection range of the utility model.

Claims

1. A PICC central venous catheter holder, 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 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 movably provided on the buckle seat and the distance between the sliding positioning pin and the fixed positioning pin can be adjusted; The buckle seat is provided with an arc-shaped slide groove running through from top to bottom, and a fan-shaped give way groove is provided on the lower end surface of the buckle seat. The arc-shaped slide groove is opposite to the arc edge of the fan-shaped give way groove. A circular hole is provided on the buckle seat at the center of the fan-shaped give way groove. The sliding positioning pin includes a pin rod, a connecting rod, a rotating shaft, and a limit piece connected in sequence; the limit piece is arranged on the circular hole, the rotating shaft passes through the circular hole, the connecting rod is swingably arranged in the fan-shaped give way groove, and the pin rod is slidably arranged in the arc-shaped slide groove and extends out of the arc-shaped slide groove.

2. The PICC central venous catheter holder according to claim 1, characterized in that: The limiting member includes a hemispherical structure or a spherical structure.

3. The PICC central venous catheter holder according to claim 1, characterized in that: A circular groove and an arc-shaped groove are provided on the lower end surface of the buckle cover; when the buckle cover and the buckle seat are closed, the circular groove faces the fixed positioning pin, and the arc-shaped groove faces the arc-shaped sliding groove.

4. The PICC central venous catheter holder according to claim 1, characterized in that: One end of the buckle cover is flexibly connected to one end of the buckle seat through an arc-shaped bending section.

5. The PICC central venous catheter holder according to claim 4, characterized in that: The inner side of the bending section is an arc-shaped deformation clearance groove running through the front and back, and the middle position of the deformation clearance groove is provided with a deformation angle groove running through the front and back.

6. The PICC central venous catheter holder according to claim 1, characterized in that: The other end of the buckle cover is provided with a V-shaped spring flap, and the V-shaped spring flap is provided with a ratchet. The other end of the buckle seat is provided with a locking tooth. After the V-shaped spring flap is pressed and locked with the other end of the buckle seat, the V-shaped spring flap elastically deforms so that the locking tooth locks the ratchet.

7. The PICC central venous catheter holder according to claim 6, characterized in that: The V-shaped spring flap is connected with a hand-held flap.

8. The PICC central venous catheter holder according to claim 1, characterized in that: The lower end surface of the buckle cover is provided with compression cotton, and the upper end surface of the buckle cover is provided with reinforcement ribs.

9. The PICC central venous catheter holder 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 and a buckle area and separated by reinforced vertical edges in the front and rear directions.

10. The PICC central venous catheter holder according to claim 1, characterized in that: The PICC central venous catheter holder 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.

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