Peripheral vein catheterization limb fixator

Abstract

The utility model provides a peripheral vein catheterization limb fixator which comprises a supporting base, a first bevel gear, a pedal wheel, a second bevel gear, a lead screw, a connecting assembly and a bearing pad, and a containing space is formed in the supporting base; the first bevel gear is rotatably arranged in the accommodating space, and a threaded hole is formed in the middle of the first bevel gear; the pedal wheel is rotatably arranged on the supporting base in a penetrating manner and extends into the accommodating space; the second bevel gear is arranged in the accommodating space and connected with the pedal wheel, and the second bevel gear is meshed with the first bevel gear; the lead screw is arranged on the supporting base in a penetrating mode in the vertical direction, and the lead screw is arranged in the threaded hole in a penetrating mode and matched with the threaded hole in a threaded mode. The connecting assembly is connected with the screw rod; the bearing pad is arranged on the connecting assembly in the mode that the angle can be rotationally adjusted, a U-shaped groove used for bearing the wrist of the patient is formed in the bearing pad, and a bandage is arranged in the U-shaped groove. The device can replace an assistant, and can assist an operator to independently disinfect the upper arm of a patient and fix the punctured limb.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, and in particular to a peripheral vein catheter limb fixation device. Background Technology

[0002] PICC and midline catheters are thin, flexible, and bendable intravenous infusion catheters, usually inserted through a vein in the upper arm, used to infuse medication, protect blood vessels, and reduce the pain of repeated venous punctures.

[0003] During catheter placement, once the operator puts on a sterile surgical gown (isolation gown), they cannot directly contact the patient. At this time, an assistant is needed to help, including but not limited to: assisting the operator in disinfecting the patient's upper arm and ensuring the position of the patient's upper arm is fixed during the catheter placement process.

[0004] Especially when disinfecting the upper arm, in order to ensure a sterile puncture area, the assistant needs to hold the patient's wrist with one hand and raise the patient's arm to expose the disinfection area, making it easier for the operator to perform full-range disinfection. This requires the assistant to provide a certain amount of strength and endurance (especially when dealing with obese patients), which places high demands on the assistant. Moreover, fixing the patient's upper arm for a long time can also lead to arm fatigue for the assistant. In addition, since some patients cannot fully cooperate with the operation, they may move their arm position due to pain or other discomfort. In this case, the assistant also needs to help fix the arm position, but it is still impossible to effectively ensure that the patient's arm does not move.

[0005] Therefore, it is necessary to provide a peripheral venous catheter limb fixation device that can be used to replace an assistant and help the operator independently disinfect the patient's upper arm and fix the punctured limb when performing peripheral venous catheterization, thereby relieving manpower pressure. Utility Model Content

[0006] The purpose of this invention is to provide a peripheral venous catheter limb fixation device, which can be used to replace an assistant and help the operator independently disinfect the patient's upper arm and fix the punctured limb when performing peripheral venous catheterization, thereby relieving the pressure on the operator's hands.

[0007] To achieve the above objectives, this utility model provides a peripheral intravenous catheter limb fixation device, including a support base, a first bevel gear, a foot wheel, a second bevel gear, a lead screw, a connecting assembly, and a support pad. The support base has an accommodating space; the first bevel gear is rotatably disposed within the accommodating space, and the rotation center axis of the first bevel gear is arranged vertically, with a threaded hole in the middle of the first bevel gear; the foot wheel is rotatably mounted on the support base and extends into the accommodating space; the second bevel gear is disposed within the accommodating space and... The second bevel gear is connected to the foot pedal wheel, and its rotation center is arranged horizontally. The second bevel gear meshes with the first bevel gear. The lead screw passes vertically through the support base and is threaded into the threaded hole. The connecting assembly is connected to the lead screw. The support pad is rotatably adjustable on the connecting assembly, and its rotation center is arranged horizontally. The support pad has a U-shaped groove for supporting the patient's wrist, and a strap for fixing the patient's wrist is provided in the U-shaped groove.

[0008] Preferably, the accommodating space is provided with a mounting bearing, one end of the first bevel gear is inserted into the mounting bearing, and the other end of the first bevel gear meshes with the second bevel gear.

[0009] Preferably, the first bevel gear includes a gear mounting portion and a gear body portion, the gear mounting portion is inserted into the mounting bearing, the gear body portion meshes with the second bevel gear, and the threaded hole is arranged through the gear mounting portion and the gear body portion.

[0010] Preferably, the foot pedal includes a foot pedal connector, a rotating wheel, and foot pedal rods. One end of the foot pedal connector is rotatably inserted into the accommodating space, and the other end of the foot pedal connector is connected to one end of the rotating wheel. A plurality of foot pedal rods are spaced apart on the other end of the rotating wheel along the rotation direction of the rotating wheel. The foot pedal rods are used for doctors to step on.

[0011] Preferably, the connecting assembly includes a connecting arm, a connecting rod, and a mounting base. The connecting arm is connected to the upper end of the lead screw, the connecting rod is connected to the connecting arm, and the mounting base is disposed at the upper end of the connecting rod. The mounting base has an upward-facing mounting groove, and the support pad is inserted into the mounting groove and rotatably connected to the mounting base.

[0012] Preferably, it also includes an adjusting bolt. The support pad includes a support portion and a rotating portion. The U-shaped groove is disposed on the upper part of the support portion. The rotating portion is fixedly connected to the bottom of the support portion. The rotating portion is located in the mounting groove and rotatably extends to the outside of the mounting base. The adjusting bolt is sleeved on the rotating portion and is threadedly connected to the rotating portion to lock the support pad on the mounting base.

[0013] Preferably, the connecting rod is rotatably and adjustablely fitted onto the connecting arm, and the lower end of the connecting rod is provided with a kicking part for the doctor to kick and drive the connecting rod to rotate.

[0014] Preferably, the device further includes a ratchet, a pawl, and an elastic element. The ratchet is fixedly sleeved on the connecting arm and located on one side of the connecting rod. One end of the pawl is pivotally connected to the connecting rod, and the other end of the pawl engages with one of the teeth of the ratchet. One end of the elastic element is connected to the connecting rod, and the other end of the elastic element is connected to the pawl. By kicking the kicking part of the connecting rod, the connecting rod rotates, thereby causing the pawl to rotate and squeeze the elastic element. The elastic restoring force of the elastic element pushes the pawl to rotate in the opposite direction, causing the pawl to engage with the other tooth of the ratchet, thereby fixing the adjustment angle of the connecting rod.

[0015] Preferably, the connecting rod has an extension arm protruding from it, and one end of the elastic element is connected to the extension arm.

[0016] Compared with existing technologies, the peripheral venous catheterization limb fixation device of this invention, by setting up a support base, a first conical gear, a foot pedal, a second conical gear, a lead screw, a connecting component, and a support pad, can support the patient's wrist using the U-shaped groove of the support pad and use straps to tightly fix the patient's wrist to the support pad, thus achieving the positioning of the patient's wrist. When performing peripheral venous catheterization, if it is necessary to raise the patient's arm for disinfection or other operations, the doctor can step on the foot pedal to rotate it, which in turn drives the second conical gear to rotate. The rotation of the second conical gear drives the first conical gear to rotate, which in turn drives the lead screw to rise. This, in turn, lifts the support pad and the patient's arm on it through the connecting component. Therefore, the peripheral venous catheterization limb fixation device of this invention can replace an assistant and help the operator independently perform disinfection of the patient's upper arm and fixation of the punctured limb, relieving hand pressure. Attached Figure Description

[0017] Figure 1 This is a front view of the peripheral vein catheter limb fixation device of this utility model.

[0018] Figure 2This is a partial structural diagram of the peripheral vein catheter limb fixation device of this utility model.

[0019] Figure 3 This is a side view of the connection between the connecting rod and the support pad of the peripheral vein catheter limb fixation device of this utility model.

[0020] Figure 4 It is along Figure 1 A cross-sectional view along the AA direction. Detailed Implementation

[0021] To explain the technical content and structural features of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] Please see Figures 1 to 3 The peripheral intravenous catheter limb fixation device 100 of this utility model includes a support base 1, a first bevel gear 2, a foot wheel 3, a second bevel gear 4, a lead screw 5, a connecting assembly 6, and a support pad 7. The support base 1 has an accommodating space 11. The first bevel gear 2 is rotatably disposed in the accommodating space 11, and the rotation center axis of the first bevel gear 2 is arranged in the vertical direction. The middle part of the first bevel gear 2 has a threaded hole 21. The foot wheel 3 is rotatably mounted on the support base 1 and extends into the accommodating space 11. The second bevel gear 4 is disposed in the accommodating space 11. It is connected to the foot pedal wheel 3. The rotation center of the second bevel gear 4 is arranged in the horizontal direction. The second bevel gear 4 meshes with the first bevel gear 2. The lead screw 5 is inserted vertically on the support base 1 and is inserted into the threaded hole 21 and threaded into the threaded hole 21. The connecting assembly 6 is connected to the lead screw 5. The support pad 7 is rotatably adjustable on the connecting assembly 6. The rotation center of the support pad 7 is arranged in the horizontal direction. The support pad 7 is provided with a U-shaped groove 71 for supporting the patient's wrist. The U-shaped groove 71 is provided with a strap 711 for fixing the patient's wrist.

[0023] This invention utilizes the U-shaped groove 71 of the support pad 7 to support the patient's wrist, and uses a strap 711 to secure the patient's wrist to the support pad 7, thus achieving wrist positioning. Before the procedure, the angle of the support pad 7 can be adjusted by rotation to ensure the patient's wrist is at a suitable angle. During peripheral intravenous catheterization, when the patient's arm needs to be raised for disinfection or other procedures, the doctor can step on the foot pedal 3, causing it to rotate. This rotation drives the second bevel gear 4, which in turn drives the first bevel gear 2, which in turn causes the lead screw 5 to rise. This, in turn, allows the support pad 7 and the patient's arm to rise via the connecting assembly 6. Therefore, the doctor can raise and lower the support pad 7 and the patient's arm using only their foot, without using their hands, ensuring the aseptic nature of subsequent hand punctures.

[0024] Please see Figure 1 and Figure 2 In one embodiment, a mounting bearing 12 is provided within the accommodating space 11. One end of the first bevel gear 2 is inserted into the mounting bearing 12, and the other end of the first bevel gear 2 meshes with the second bevel gear 4. Specifically, the first bevel gear 2 includes a gear mounting portion 22 and a gear body portion 23. The gear mounting portion 22 is inserted into the mounting bearing 12, and the gear body portion 23 meshes with the second bevel gear 4. A threaded hole 21 is arranged through the gear mounting portion 22 and the gear body portion 23.

[0025] Please see Figure 1 and Figure 2 In one embodiment, the foot pedal 3 includes a foot pedal connector 31, a rotating wheel 32, and foot pedal rods 33. One end of the foot pedal connector 31 is rotatably inserted into the accommodating space 11, and the other end of the foot pedal connector 31 is connected to one end of the rotating wheel 32. A plurality of foot pedal rods 33 are spaced apart on the other end of the rotating wheel 32 along the rotation direction of the rotating wheel 32. The foot pedal rods 33 are used for the doctor to step on. By providing multiple foot pedal rods 33, the doctor can easily drive the foot pedal 3 to rotate.

[0026] Please see Figure 1 and Figure 3 In one embodiment, the connecting assembly 6 includes a connecting arm 61, a connecting rod 62, and a mounting base 63. The connecting arm 61 is connected to the upper end of the lead screw 5, the connecting rod 62 is connected to the connecting arm 61, and the mounting base 63 is disposed at the upper end of the connecting rod 62. The mounting base 63 has an upward-facing mounting groove 631, and the support pad 7 is inserted into the mounting groove 631 and is rotatably and adjustablely connected to the mounting base 63.

[0027] Furthermore, the peripheral venous catheter limb fixation device 100 of this utility model also includes an adjusting bolt 8. The support pad 7 includes a support portion 72 and a rotating portion 73. A U-shaped groove 71 is disposed on the upper part of the support portion 72, and the rotating portion 73 is fixedly connected to the bottom of the support portion 72. The rotating portion 73 is located in the mounting groove 631 and rotatably extends to the outside of the mounting base 63. The adjusting bolt 8 is sleeved on the rotating portion 73 and is threadedly connected to the rotating portion 73 to lock the support pad 7 onto the mounting base 63. Before surgery, the adjusting bolt 8 can be rotated to release the rotating portion 73 of the support pad 7, allowing the support pad 7 to rotate and adjust its angle, thereby adjusting the angle of the patient's arm. The adjusting bolt 8 can also be rotated to lock the rotating portion 73 of the support pad 7, thereby fixing the support pad 7 and thus fixing the angle of the patient's arm, completing the pre-adjustment of the angle of the patient's arm.

[0028] Please see Figure 1 , Figure 3 and Figure 4In one embodiment, the connecting rod 62 is rotatably adjusted and sleeved on the connecting arm 61. The lower end of the connecting rod 62 is provided with a kicking part for the doctor to kick and drive the connecting rod 62 to rotate. Specifically, the peripheral venous catheter limb fixation device 100 of this utility model also includes a ratchet 9, a pawl 91, and an elastic element 92. The ratchet 9 is fixedly sleeved on the connecting arm 61 and located on one side of the connecting rod 62. One end of the pawl 91 is pivotally connected to the connecting rod 62, and the other end of the pawl 91 is engaged with one of the teeth of the ratchet 9. One end of the elastic element 92 is connected to the connecting rod 62, and the other end of the elastic element 92 is connected to the pawl 91. By kicking the kicking part of the connecting rod 62, the connecting rod 62 rotates, thereby driving the pawl 91 to rotate and compress the elastic element 92. The elastic restoring force of the elastic element 92 pushes the pawl 91 to rotate in the opposite direction, so that the pawl 91 is engaged with the other tooth of the ratchet 9, thereby fixing the adjustment angle of the connecting rod 62. Therefore, when performing peripheral intravenous catheterization on a patient, the doctor does not need to use their hands; they can use their feet to move the support pad 7 and the patient's arm on it to adjust the angle to meet the doctor's needs during peripheral intravenous catheterization. This allows for independent operation by the doctor without the need for an assistant, ensuring the aseptic nature of subsequent punctures and catheterizations. More specifically, the connecting rod 62 has a protruding extension arm 621, and one end of the elastic element 92 is connected to the extension arm 621. The elastic element 92 can be an existing spring, elastic telescopic cylinder, etc.

[0029] In summary, the peripheral venous catheter limb fixation device 100 of this utility model can be used to replace an assistant and help the operator independently disinfect the patient's upper arm and fix the puncture limb when performing peripheral venous catheterization. No additional manpower is required, which effectively relieves the pressure on the hands. At the same time, it can also avoid the doctor using his hands to operate, and the adjustment operation of the peripheral venous catheter limb fixation device 100 of this utility model can be completed independently with the feet, ensuring the asepticity of subsequent puncture and catheterization by the doctor.

[0030] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.

Claims

1. A limb fixation device for peripherally inserted veins, characterized in that, include: A support base, wherein the support base has an accommodating space; A first bevel gear is rotatably disposed within the accommodating space, and the rotation center axis of the first bevel gear is arranged in the vertical direction, and a threaded hole is provided in the middle of the first bevel gear; A foot pedal wheel, which is rotatably mounted on the support base and extends into the receiving space; The second bevel gear is disposed within the accommodating space and connected to the foot wheel. The rotation center of the second bevel gear is arranged in the horizontal direction, and the second bevel gear meshes with the first bevel gear. A lead screw, which is vertically inserted into the support base and threaded into the threaded hole; A connecting assembly, which is connected to the lead screw; A support pad is rotatably and adjustablely mounted on the connecting assembly, with the rotation center of the support pad arranged in a horizontal direction. The support pad has a U-shaped groove for supporting the patient's wrist, and a strap for fixing the patient's wrist is provided in the U-shaped groove.

2. The peripheral venous catheter limb fixation device according to claim 1, characterized in that, The accommodating space is provided with a mounting bearing, one end of the first bevel gear is inserted into the mounting bearing, and the other end of the first bevel gear meshes with the second bevel gear.

3. The peripheral venous catheter limb fixation device according to claim 2, characterized in that, The first bevel gear includes a gear mounting part and a gear body part. The gear mounting part is inserted into the mounting bearing. The gear body part meshes with the second bevel gear. The threaded hole is arranged through the gear mounting part and the gear body part.

4. The peripheral venous catheter limb fixation device according to claim 1, characterized in that, The foot pedal includes a foot pedal connector, a rotating wheel, and foot pedal rods. One end of the foot pedal connector is rotatably inserted into the accommodating space, and the other end of the foot pedal connector is connected to one end of the rotating wheel. Several foot pedal rods are spaced apart on the other end of the rotating wheel along the rotation direction of the rotating wheel. The foot pedal rods are used for doctors to step on.

5. The peripheral venous catheter limb fixation device according to claim 1, characterized in that, The connecting assembly includes a connecting arm, a connecting rod, and a mounting base. The connecting arm is connected to the upper end of the lead screw, the connecting rod is connected to the connecting arm, and the mounting base is disposed at the upper end of the connecting rod. The mounting base has an upward-facing mounting groove, and the support pad is inserted into the mounting groove and is rotatably and adjustablely connected to the mounting base.

6. The peripheral venous catheter limb fixation device according to claim 5, characterized in that, It also includes an adjusting bolt. The support pad includes a support part and a rotating part. The U-shaped groove is provided on the upper part of the support part. The rotating part is fixedly connected to the bottom of the support part. The rotating part is located in the mounting groove and rotatably extends to the outside of the mounting base. The adjusting bolt is sleeved on the rotating part and is threadedly connected to the rotating part to lock the support pad on the mounting base.

7. The peripheral venous catheter limb fixation device according to claim 5, characterized in that, The connecting rod is rotatably and adjustablely fitted onto the connecting arm, and the lower end of the connecting rod is provided with a kicking part for the doctor to kick and drive the connecting rod to rotate.

8. The peripheral venous catheter limb fixation device according to claim 7, characterized in that, It also includes a ratchet, a pawl, and an elastic element. The ratchet is fixedly sleeved on the connecting arm and located on one side of the connecting rod. One end of the pawl is pivotally connected to the connecting rod, and the other end of the pawl engages with one of the teeth of the ratchet. One end of the elastic element is connected to the connecting rod, and the other end of the elastic element is connected to the pawl. By kicking the kicking part of the connecting rod, the connecting rod rotates, thereby driving the pawl to rotate and squeezing the elastic element. The elastic restoring force of the elastic element pushes the pawl to rotate in the opposite direction, causing the pawl to engage with the other tooth of the ratchet, thereby fixing the adjustment angle of the connecting rod.

9. The peripheral venous catheter limb fixation device according to claim 8, characterized in that, An extension arm protrudes from the connecting rod, and one end of the elastic element is connected to the extension arm.

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