Positioning device for ultrasound-guided puncture catheterization

Abstract

The positioning device comprises the puncture indwelling catheter, the surface of the puncture indwelling catheter is fixedly sleeved with a catheter fixing piece, side plates are arranged on the left side and the right side of the catheter fixing piece correspondingly, and fixing holes are formed in the surfaces of the side plates; a pair of adjusting supports is symmetrically installed on the left side and the right side of the catheter fixing piece, and the whole adjusting supports are in a triangular shape and protrude towards the outer side of the catheter fixing piece. By arranging the adjusting bracket, the fixed plate, the movable plate and the fixed notch, when the tightness of a suture needs to be adjusted, a medical worker can hold the upper part of the adjusting bracket and adjust the position of the movable plate downwards or upwards, so that the movable plate slides on the surface of the catheter fixing sheet; therefore, the protruding amplitude of the suture after being extruded by the fillet on the outer side of the fixing plate is controlled, the tightness of the suture is adjusted, the problems of pain and the like possibly caused by the fact that the suture pulls the skin can be avoided, and the use safety of the puncture indwelling catheter is further improved.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic puncture technology, and more specifically, to a positioning device for ultrasonic-guided puncture and catheter placement. Background Technology

[0002] Venous catheterization is a procedure to place a catheter in a blood vessel for long-term intravenous infusion or intravenous access for repeated use. The entire procedure is usually performed under ultrasound guidance. Venous catheterization involves inserting a thin, flexible catheter into a large vein, typically the median cubital vein, external jugular vein, or femoral vein. The aim is to establish a stable venous access for repeated blood sampling or medication administration. This method reduces the discomfort and risk of skin damage caused by frequent needle pricks. For patients requiring long-term intravenous infusion, catheterization avoids complications such as subcutaneous tissue inflammation and hematoma caused by repeated punctures. After catheter placement, the catheter fixation piece is sutured to the skin and reinforced with a skin protective film to complete the positioning and fixation of the catheter.

[0003] Currently, when suturing and fixing the catheter, the tension of the suture is not adjustable after it is fixed. When the patient turns over or in daily life, the suture may pull on the skin, causing pain and affecting daily activities. Furthermore, pulling the suture too tightly during activities may cause cuts or pressure ulcers, resulting in redness, swelling, and pain at the puncture site, which affects the patient's treatment. In severe cases, it may increase the risk of infection, leading to the need for replacement of the puncture catheter. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a positioning device for ultrasound-guided puncture and catheter placement. By setting an adjusting bracket, a fixing plate, a moving plate, and a fixing slot, when it is necessary to adjust the tightness of the suture, medical personnel can pinch the top of the adjusting bracket and adjust the position of the moving plate downwards or upwards, allowing it to slide on the surface of the catheter fixing piece. This controls the bulge amplitude of the suture after being squeezed by the outer rounded corner of the fixing plate, thereby adjusting the tightness of the suture. This avoids problems such as pain that may be caused by the suture pulling on the skin, further improving the safety of puncture and catheter placement during use, and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a positioning device for ultrasound-guided puncture catheter placement, comprising a puncture catheter, a catheter fixing plate fixedly sleeved on the surface of the puncture catheter, side plates provided on both the left and right sides of the catheter fixing plate, fixing holes opened on the surface of the side plates, a pair of adjusting brackets symmetrically installed on the left and right sides of the catheter fixing plate, the adjusting brackets being triangular in shape and protruding outwards from the catheter fixing plate, multiple fixing slots circumferentially and equidistantly opened on both the left and right sides of the catheter fixing plate, the adjusting brackets comprising a fixing plate, a movable plate fixedly installed at one end of the fixing plate, the fixing plate and the movable plate being connected by a rounded transition, one end of the fixing plate being fixedly installed on the surface of the puncture catheter, the movable plate slidingly contacting the surface of the catheter fixing plate, the length of the fixing plate being greater than the length of the movable plate, and the inclination of the movable plate being greater than the inclination of the fixing plate, the adjusting brackets being located diagonally above the side plates.

[0006] In a preferred embodiment, the catheter fixation plate and side plate are made entirely of medical-grade resin material.

[0007] In a preferred embodiment, the inner wall surfaces of the fixing holes are all smooth, and the fixing holes and the position of the adjusting bracket are kept on the same horizontal line.

[0008] In a preferred embodiment, the adjusting bracket is made entirely of elastic PP material, and the surface of the adjusting bracket is set with a rough surface structure. The pair of adjusting brackets are respectively located on both sides of the catheter fixing piece at an angle above it.

[0009] In a preferred embodiment, the end of the movable plate is semi-circular, and the movable plate can slide sequentially on the surface of the conduit fixing piece and be fitted and fixed inside the multiple fixing slots on the surface of the conduit fixing piece.

[0010] In a preferred embodiment, the fixing slot is generally strip-shaped, and the angle of the plurality of fixing slots varies with the curvature of the outer trajectory of the guide tube fixing piece.

[0011] The technical effects and advantages of this invention are as follows:

[0012] This invention, by setting up an adjusting bracket, a fixing plate, a moving plate, and a fixing slot, allows medical personnel to adjust the tightness of the suture by pinching the top of the adjusting bracket and adjusting the position of the moving plate downwards or upwards. This allows the moving plate to slide on the surface of the catheter fixing piece and, after adjustment to the appropriate position, it is fitted and fixed inside the corresponding fixing slot. This adjusts the overall bulge of the adjusting bracket, thereby controlling the bulge of the suture after compression by the outer rounded corner of the fixing plate. The smaller the bulge, the less constraint force on the suture, and the looser the suture; conversely, the larger the bulge, the greater the constraint force on the suture, and the tighter the suture. This significantly improves the flexibility of the device and effectively adjusts the tightness of the suture, avoiding pain caused by suture pulling on the skin, which could affect daily activities. It also prevents patients from pulling the suture too tightly during activities, which could lead to cuts or pressure ulcers, causing redness, swelling, and pain at the puncture site. This further improves the safety of puncture and catheter placement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the overall structure of the catheter fixation piece of the present invention;

[0015] Figure 3 This is a top view of the overall structure of the present invention;

[0016] Figure 4 This is a schematic diagram of the side structure of the catheter fixation piece of the present invention;

[0017] Figure 5 This is a schematic cross-sectional view of the catheter fixation piece of the present invention;

[0018] Figure 6 This is a schematic diagram of the catheter fixation plate and suture fixation posture of the present invention.

[0019] The attached diagram is labeled as follows: 1. Puncture and catheter placement; 2. Catheter fixation plate; 3. Side plate; 4. Fixation hole; 5. Adjustment bracket; 51. Fixation plate; 52. Movable plate; 6. Fixation slot. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] As attached Figure 1-6The device shown is a positioning device for ultrasound-guided puncture catheter placement, including a puncture catheter 1. A catheter fixation piece 2 is fixedly sleeved on the surface of the puncture catheter 1. Side plates 3 are provided on both the left and right sides of the catheter fixation piece 2. Fixing holes 4 are formed on the surface of the side plates 3. A pair of adjusting brackets 5 are symmetrically installed on the left and right sides of the catheter fixation piece 2. The adjusting brackets 5 are triangular in shape and protrude outward from the catheter fixation piece 2. Multiple fixing slots 6 are circumferentially spaced on both the left and right sides of the catheter fixation piece 2. The adjusting brackets 5 include a fixing plate 51. A movable plate 52 is fixedly installed at one end of the fixing plate 51. The fixing plate 51 and the movable plate 52 are connected by a rounded corner transition. One end of the fixing plate 51 is fixedly installed on the surface of the puncture catheter 1. The moving plate 52 slides in contact with the surface of the catheter fixation piece 2. The length of the fixing plate 51 is greater than the length of the moving plate 52, and the tilt amplitude of the moving plate 52 is greater than the tilt angle of the fixing plate 51. The adjusting bracket 5 is located diagonally above the side plate 3. By using the length settings of the fixing plate 51 and the moving plate 52, it can be ensured that the overall deformation of the fixing plate 51 is greater than the deformation of the moving plate 52, thereby avoiding the problem of the fixing plate 51 breaking due to excessive deformation of the moving plate 52. By using the position settings of the adjusting bracket 5, it can be ensured that the adjusting bracket 5 is in full contact with the suture above the catheter fixation piece 2, further improving the practicality of the device.

[0022] The catheter fixation piece 2 and the side plate 3 are made of medical-grade resin material. The inner wall surface of the fixation hole 4 is smooth. The fixation hole 4 and the adjustment bracket 5 are positioned on the same horizontal line. The adjustment bracket 5 is made of elastic PP material. The surface of the adjustment bracket 5 is set with a rough surface structure. A pair of adjustment brackets 5 are respectively located on the upper sides of the catheter fixation piece 2. With the above settings, it can be ensured that after the suture passes through the fixation hole 4, it can be aligned and fixed in the middle position of the adjustment bracket 5, thereby improving the fit accuracy between the structures.

[0023] Please refer to the attached instruction manual for details. Figure 2 The end of the movable plate 52 is semi-circular. The movable plate 52 can slide on the surface of the guide tube fixing piece 2 in sequence and be fitted and fixed inside the multiple fixing slots 6 on the surface of the guide tube fixing piece 2. The fixing slots 6 are strip-shaped in general, and the angles of the multiple fixing slots 6 change with the curvature of the outer extension trajectory of the guide tube fixing piece 2.

[0024] The specific implementation method is as follows: With the above-mentioned setting, the movable plate 52 can be arbitrarily fixed inside a single fixed slot 6, thereby adjusting the bulge between the movable plate 52 and the fixed plate 51. The closer the movable plate 52 and the fixed plate 51 are to each other, the greater the bulge, and the farther apart they are, the smaller the bulge. Thus, by controlling the bulge between the movable plate 52 and the fixed plate 51, the constraint range of the fixed plate 51 on the sewing line can be controlled. That is, the smaller the bulge, the smaller the constraint force on the sewing line, and vice versa, thus fully improving the flexibility of the device.

[0025] Working principle of this invention:

[0026] Step 1: First, the physician properly fixes the puncture catheter 1 and sutures the catheter fixation piece 2 to the skin. At the same time, ensure that the suture passes through the fixation hole 4 and then passes over the top of the adjustment bracket 5 and the catheter fixation piece 2 in sequence, and makes contact with their top surfaces. The above installation and suturing steps of the puncture catheter 1 are all existing surgical procedures. The specific operational details and medical instruments involved will not be elaborated here.

[0027] Step 2: When patients need to adjust the tightness of the sutures in their daily lives, medical staff can pinch the top of the adjusting bracket 5 and adjust the position of the moving plate 52 downwards or upwards, allowing it to slide on the surface of the catheter fixation piece 2. After adjusting to the appropriate position, it is fitted and fixed inside the corresponding fixing slot 6, thereby completing the adjustment of the overall bulge of the adjusting bracket 5. This controls the bulge of the suture after the outer rounded corner of the fixation plate 51 compresses it. That is, the smaller the bulge, the less restraining force on the suture, and the looser the suture. Conversely, the larger the bulge, the greater the restraining force on the suture, and the tighter the suture. This fully improves the flexibility of the device and effectively adjusts the tightness of the suture, avoiding pain caused by the suture pulling on the skin, which may affect daily activities. It also prevents the patient from pulling the suture too tightly during activities, which may cause cuts or pressure ulcers, resulting in redness, swelling, and pain at the puncture site. This further improves the safety of the puncture catheter 1 during fixed placement. Finally, the device completes the process of adjusting the tightness of the sutures on the catheter fixation piece 2.

[0028] Step 3: In the later stages, the physician can remove the puncture catheter 1, remove the sutures, remove the catheter fixation piece 2, and perform bandaging and nursing care on the puncture wound site.

[0029] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0030] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0031] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A positioning device for ultrasound-guided puncture catheter placement, comprising a puncture catheter, wherein a catheter fixation piece is fixedly sleeved on the surface of the puncture catheter, and side plates are provided on both the left and right sides of the catheter fixation piece, wherein fixing holes are formed on the surface of the side plates, characterized in that: A pair of adjusting brackets are symmetrically installed on the left and right sides of the catheter fixation piece. The adjusting brackets are triangular in shape and protrude outward from the catheter fixation piece. Multiple fixing slots are circumferentially and equidistantly opened on both sides of the catheter fixation piece. The adjusting bracket includes a fixing plate, and a movable plate is fixedly installed at one end of the fixing plate. The fixing plate and the movable plate are connected by a rounded transition. One end of the fixing plate is fixedly installed to the surface of the puncture catheter. The movable plate slides in contact with the surface of the catheter fixation piece. The length of the fixing plate is greater than the length of the movable plate, and the inclination of the movable plate is greater than the inclination of the fixing plate. The adjusting bracket is located diagonally above the side plate.

2. The positioning device for ultrasound-guided puncture and catheter placement according to claim 1, characterized in that: The catheter fixation plate and side plate are made entirely of medical-grade resin material.

3. The positioning device for ultrasound-guided puncture and catheter placement according to claim 1, characterized in that: The inner walls of the fixing holes are all smooth, and the fixing holes and the adjusting brackets are positioned on the same horizontal line.

4. The positioning device for ultrasound-guided puncture and catheter placement according to claim 1, characterized in that: The adjustment bracket is made of elastic PP material, and the surface of the adjustment bracket is set with a rough surface structure. The pair of adjustment brackets are respectively located on the upper sides of the catheter fixing piece.

5. The positioning device for ultrasound-guided puncture and catheter placement according to claim 1, characterized in that: The end of the movable plate is semi-circular, and the movable plate can slide sequentially on the surface of the conduit fixing piece and be fitted and fixed inside the multiple fixing slots on the surface of the conduit fixing piece.

6. The positioning device for ultrasound-guided puncture and catheter placement according to claim 1, characterized in that: The fixing slots are generally strip-shaped, and the angles of the multiple fixing slots change with the curvature of the outer trajectory of the guide tube fixing piece.

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