Infusion port puncture positioning device

Abstract

The invention relates to the field of infusion instruments, in particular to an infusion port puncture positioning device which comprises a positioning cylinder, a vertically-penetrating avoiding notch is formed in the side wall of the positioning cylinder, the bottom of the positioning cylinder is communicated with a conical sleeve defined by a plurality of positioning claws, the small-diameter end of the conical sleeve is communicated with the positioning cylinder, and the positioning claws are plastic positioning claws. A gap is formed between the positioning claws, a positioning sliding hoop is slidably connected to the outer wall of the positioning cylinder and used for sliding to the positioning claws to hoop the positioning claws, multiple sets of limiting protrusions are arranged on the positioning claws on the two sides from top to bottom, and the distance between every two vertically-adjacent limiting protrusions is larger than the width of the positioning sliding hoop. The problem that an existing infusion port puncture positioning device is poor in stability can be solved.

Description

Technical Field

[0001] The present invention relates to the field of infusion equipment, and in particular to an infusion port puncture positioning device. Background Art

[0002] An infusion port, also known as an implantable drug delivery device or implantable intravenous infusion system, is a small medical device used for long-term or repeated infusion therapy. Figure 1 As shown, it usually consists of an infusion port 1 and a catheter 11 connected to a blood vessel 4. The infusion port 1 is usually implanted under the skin 3, located in the arm or chest wall, and the catheter 11 extends to the central vein, so that the drug can be directly delivered to the blood circulation system. Figure 2 As shown, the infusion port 1 includes a liquid storage chamber 12, the top of which is blocked by a silicone or special rubber diaphragm 13 that can be repeatedly punctured thousands of times without being easily damaged. When infusing, a special butterfly-wing non-destructive needle 2 is selected to be vertically inserted into the center of the diaphragm 13 until the resistance disappears, indicating that the needle has penetrated the diaphragm 13 and entered the interior of the infusion port 1. At this time, the prepared infusion bag or infusion bottle can be connected to the butterfly-wing non-destructive needle 2 through the infusion tube to start the infusion.

[0003] Combination Figure 3 As shown, currently, when puncturing clinically, medical staff need to first find the position of the infusion port seat 1, pinch the infusion port seat 1 from the subcutaneous part with one hand and keep the infusion port seat protruding from the surface of the skin 3, and perform puncture with the other hand. Since the infusion port seat is buried under the skin, and the fat layer shrinks after pinching it, especially when the patient is obese and the fat layer is thick, it is difficult for medical staff to pinch the infusion port seat with one hand and keep it protruding from the surface of the skin stably. Therefore, it is difficult to operate when one person punctures. In clinical practice, multiple people usually collaborate to complete the puncture, but this method has high labor costs and adds burden to the already heavy medical work.

[0004] In order to solve the above problems, a puncture positioning device for an infusion port is disclosed in the prior art (Announcement No. CN110507878B, announcement date 2021.05.28), which covers a truncated cone-shaped positioning cylinder outside the skin to be punctured, and drives the positioning cylinder to be pressed down by pressing down the pressing bar on the positioning cylinder, and utilizes the structural feature that the diameter of the end of the positioning cylinder in contact with the skin is greater than the diameter of the end away from the skin, so that the covered skin bulges upward when pressed down, which is convenient for subsequent puncture. However, there are still certain problems in the actual use of this device: the device covers the skin with a cylinder, and presses down hard, so that the skin and flesh covered by the middle part of the cylinder are squeezed and bulged upward. If this part needs to bulge upward more, especially during the pre-embedded infusion port, the patient's fat layer increases due to weight gain, then it is necessary to use force to make the cylinder vertically penetrate deeper into the skin, which will cause severe indentations on the skin and even cause compressive injuries. Summary of the invention

[0005] The present invention is intended to provide a method to solve the problem that the existing infusion port puncture positioning device squeezes the skin simply by vertically pressing downward during use, which easily causes serious skin indentations.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme:

[0007] A puncture positioning device for an infusion port comprises a positioning cylinder, a side wall of the positioning cylinder is provided with a vertically penetrating avoidance notch, the bottom of the positioning cylinder is connected to a conical sleeve surrounded by a plurality of positioning claws, the small diameter end of the conical sleeve is connected to the positioning cylinder, the positioning claws are plastic positioning claws, there is a gap between the positioning claws, a positioning hoop is slidably connected to the outer wall of the positioning cylinder, the positioning hoop is used to slide onto the positioning claws and clamp the positioning claws, a plurality of groups of limiting protrusions are arranged on the positioning claws on both sides from top to bottom, and the spacing between two adjacent limiting protrusions above and below is greater than the width of the positioning hoop.

[0008] Preferably, as an improvement, a catheter joint avoidance area is provided on the positioning cylinder, the positioning claws include long positioning claws and short positioning claws, and the short positioning claws are provided in the catheter joint avoidance area.

[0009] Preferably, as an improvement, a catheter joint avoidance area is provided on the positioning cylinder, and no positioning claws are provided in the catheter joint avoidance area.

[0010] Preferably, as an improvement, a catheter joint avoidance zone is provided on the positioning cylinder, and the spacing between the positioning claws in the catheter joint avoidance zone is greater than the spacing between the positioning claws in other areas of the positioning cylinder.

[0011] Preferably, as an improvement, a butterfly wing limiting ring is arranged in the positioning cylinder, and a limiting groove for limiting the butterfly wing without damaging the needle is opened on the inner wall of the butterfly wing limiting ring. A vertical avoidance notch is also opened on the butterfly wing limiting ring, and the butterfly wing limiting ring is detachably connected to the positioning cylinder.

[0012] Preferably, as an improvement, at least three connecting ropes are fixed circumferentially on the butterfly wing limiting ring, a rope hole is provided on the side wall of the positioning cylinder, the other end of the connecting rope passes through the rope hole, the connecting rope is fixed to the positioning cylinder by a rope head fixed at the free end, and an annular cutting blade is provided on the inner edge of the top of the positioning slide hoop, and the cutting blade can contact the rope head.

[0013] Preferably, as an improvement, the bottom of the butterfly wing limit ring is connected to a conical gasket tube, a puncture hole is opened in the center of the bottom of the gasket tube, a first annular tear line is provided at the connection between the gasket tube and the butterfly wing limit ring, and vertical second tear lines are provided on both sides of the gasket tube. The gasket tube and the butterfly wing limit ring can be separated by the first tear line, and the side wall of the gasket tube can be divided into two pieces by the second tear line. An adhesive layer is provided on the outer wall of the gasket tube, and the adhesive layer is covered with release paper.

[0014] Preferably, as an improvement, an adhesive layer is also provided on the inner wall of the cushioning tube, and the adhesive layer is also covered with release paper.

[0015] The principles and beneficial effects of this scheme are:

[0016] 1. In actual use, the present invention is placed on the skin of the infusion port seat with the conical sleeve facing downwards. The principle that the diameter of the bottom end of the conical sleeve is larger than the diameter of the top end is used so that when the conical sleeve is pressed down, it can squeeze the skin, so that the covered skin can bulge, thereby making the infusion port seat bulge through the skin; on this basis, by pressing the positioning hoop down onto the positioning claws, due to the gap between the positioning claws, the positioning claws can be retracted to the middle under the action of the positioning hoop, thereby the positioning claws can grasp the infusion port seat circumferentially through the skin in the middle, which can further make the infusion port seat bulge. Compared with simply relying on the conical sleeve to squeeze the skin, this invention coordinates the squeezing of the conical sleeve and the grasping of the positioning claws to more easily grasp the infusion port seat, without applying excessive pressure vertically to the skin, thereby effectively reducing the indentation caused by vertical force. In addition, the present solution adopts a plastic positioning claw. When the positioning hoop clamps the positioning claw, the plasticity of the positioning claw causes it to have a tendency to expand outward and reset. This tendency causes the positioning claw and the positioning hoop to tightly resist each other, thereby achieving a balance of force, and ultimately enabling the positioning claw to stably grasp the infusion port seat.

[0017] 2. This solution sets multiple groups of limiting protrusions on the positioning claw from top to bottom, and uses the limiting protrusions as limiting parts of the positioning hoop to further improve the stability of the positioning claw. Since the positioning claw is plastic, the positioning hoop can be forced to pass through the limiting protrusions when the positioning hoop is pressed with increased force. By setting multiple groups of limiting protrusions, it is convenient to choose the position to which the positioning hoop is pressed down according to the thickness of the patient's fat layer. It has a wide range of applications. The thicker the fat layer of the patient, the lower the positioning hoop needs to be pressed down, the greater the degree of retraction of the positioning claw, the more fat is grabbed, and the greater the gripping force, which can ensure the stability of the infusion port seat. Since the resistance of the positioning hoop increases when it passes through the limiting protrusion, it can be used as a reminder signal to help the operator determine which position the positioning hoop is pressed down to, and the operation is more convenient. In summary, the limiting protrusion of this solution cooperates with the positioning hoop and the plastic positioning claw to achieve two functions, one is to complete the limiting of the positioning claw, and the other is to serve as a reminder signal to help medical staff determine the position of the positioning hoop.

[0018] 3. Since the infusion port is connected to the catheter, the joint of the catheter may hinder the positioning claw. Specifically, the catheter joint raises the positioning claw under the skin, so that the positioning claw here cannot drop to the same level as other positioning claws, which may cause the device to tilt and may affect subsequent puncture. Therefore, this solution sets up a catheter joint avoidance area to avoid the catheter joint as much as possible to solve the above problem. For example, the catheter joint avoidance area does not set a positioning claw to avoid the catheter joint. For another example, a short positioning claw is set to avoid being raised by the catheter joint, so that the device as a whole remains horizontal.

[0019] 4. During the actual puncture, the medical staff pinches the butterfly wing of the butterfly-wing non-damage needle to perform the puncture. After letting go, the butterfly wing of the butterfly-wing non-damage needle unfolds to a horizontal state due to its own plastic properties, which is convenient for subsequent fixation on the skin. After the puncture is in place, this solution needs to be taken out to fix the butterfly-wing non-damage needle later. In order to avoid the loosening of the butterfly-wing non-damage needle caused by the pulling or touching caused by the action of taking out this device, this solution sets a butterfly wing limiting ring in the positioning cylinder. After the puncture is in place, the butterfly wing of the butterfly-wing non-damage needle is pressed tightly against the limiting groove of the butterfly wing limiting ring, and it is confined in the butterfly wing limiting sleeve. After the butterfly wing limiting ring is separated from the positioning cylinder, the positioning cylinder is taken out, which can stabilize the butterfly wing non-damage needle and effectively avoid collision or pulling of the butterfly wing non-damage needle when the positioning cylinder is taken out.

[0020] 5. This solution uses the rope head to limit the butterfly wing limit ring inside the positioning cylinder after the connecting rope is passed through the positioning cylinder. When the positioning cylinder is taken out after the puncture is completed, the positioning hoop must be slid up to reset. When the positioning hoop slides up, the cutting blade on it cuts off the rope head, and the connecting rope is cut off, thereby separating the butterfly wing limit ring from the positioning cylinder. This solution uses the necessary action of taking out the positioning cylinder - sliding the positioning hoop up to cut off the rope head, completing the separation of the butterfly wing limit ring from the positioning cylinder, without the need to complete the separation action, and the operation is more convenient.

[0021] 6. This solution connects the gasket tube below the butterfly wing limit ring, and a puncture hole is set at the bottom of the gasket tube to guide the puncture. On this basis, the gasket tube is specially set with a first easy-tear line and a second easy-tear line. After the positioning cylinder is taken out, the butterfly wing limit ring can be separated from the gasket tube by tearing along the first easy-tear line, and the tube wall of the gasket tube can be divided into two by tearing along the second easy-tear line. After being divided into two, it is pasted on the skin through the adhesive layer, and can be used as a gasket for the butterfly wing part between the skin and the butterfly wing to avoid direct contact between the butterfly wing part and the skin, thereby improving the patient's comfort. The structure of the gasket tube and the butterfly wing limit ring of this solution can limit the butterfly wing during puncture, and deform into the gasket of the butterfly wing after the puncture is completed. The design is ingenious.

[0022] On this basis, because the butterfly wing non-damaging needle has a certain length, there is still a certain distance between the butterfly wing part and the skin after puncture in patients with a thin fat layer, which needs to be filled with gauze. Currently, the gauze is placed on the skin and then pasted with medical tape, which is rather troublesome. This solution also provides an adhesive layer on the inner wall of the gasket tube. After the gasket tube is deformed and pasted on the skin, the gauze can be directly pasted on the adhesive layer on the inner wall of the gasket tube. It is quick and convenient, and there is no need to prepare additional tools such as medical tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the subcutaneous infusion port.

[0024] Figure 2 This is a schematic diagram of the structure of the infusion port.

[0025] Figure 3 This is a schematic diagram of the operation of infusion port puncture.

[0026] Figure 4 This is a schematic diagram of the structure of Example 1 of the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of Example 2 of the present invention.

[0028] Figure 6 It is a partial cross-sectional view of embodiment 5 of the present invention.

[0029] Figure 7 It is a partial cross-sectional view of embodiment 6 of the present invention.

[0030] Figure 8 Schematic diagram of the structure of the cushioning tube in Example 6 of the present invention.

[0031] Fig. 9 This is a schematic diagram of the unfolded cushioning tube in Example 6 of the present invention.

[0032] Fig.10 This is a schematic structural diagram of the positioning sliding hoop in Example 8 of the present invention.

[0033] Fig.11 It is a schematic structural diagram of the positioning sliding hoop in Example 9 of the present invention.

[0034] Fig.12 It is a partial structural schematic diagram of the positioning sliding hoop in Example 9 of the present invention. DETAILED DESCRIPTION

[0035] The following is further described in detail through specific implementation methods:

[0036] The figure marks in the drawings of the specification include: infusion port 1, catheter 11, fluid storage chamber 12, diaphragm 13, butterfly wing non-damaging needle 2, skin 3, blood vessel 4, positioning cylinder 5, avoidance gap 51, positioning claw 6, limiting protrusion 61, long positioning claw 62, short positioning claw 63, positioning sliding hoop 7, connecting plate 71, sliding pin 72, arc groove 73, butterfly wing limiting ring 8, limiting groove 81, connecting rope 82, rope head 83, cutting blade 84, gasket cylinder 9, puncture hole 91, first tear line 92.

[0037] Embodiment 1:

[0038] like Figure 4 As shown, an infusion port puncture positioning device includes a positioning cylinder 5, a vertically penetrating avoidance notch 51 is opened on the side wall of the positioning cylinder 5, the bottom of the positioning cylinder 5 is connected to a conical sleeve surrounded by a plurality of positioning claws 6, there are gaps between the positioning claws 6, the small diameter end of the conical sleeve is connected to the positioning cylinder 5, and the positioning cylinder 5 and the positioning claws 6 are made of medical plastic and are integrally formed.

[0039] A positioning hoop 7 is slidably connected to the outer wall of the positioning cylinder 5. The positioning hoop 7 is also made of medical plastic. The positioning hoop 7 is used to slide onto the positioning claw 6 and clamp the positioning claw 6. The positioning claws 6 on both sides are integrally formed with multiple groups of limiting protrusions 61 from top to bottom. In this embodiment, there are 2 groups. The limiting protrusions 61 on the same horizontal line are a group. In this embodiment, there are two limiting protrusions 61 in one group. The two limiting protrusions 61 in one group are symmetrically arranged on the left and right sides of the tapered sleeve, and the distance between the two adjacent limiting protrusions 61 above and below is greater than the width of the positioning hoop 7.

[0040] In this embodiment, the arm infusion port is used as an example to illustrate the working principle of this solution:

[0041] In actual use, first find the infusion port position, cover the positioning device with the conical sleeve facing downward on the infusion port seat 1, press the positioning device downward with the lower end of the positioning claw 6 pressed against the skin 3, and press the positioning device downward. Since the diameter of the bottom of the conical sleeve is larger than the diameter of the top, the conical sleeve can squeeze the skin 3 after being pressed down, so that the covered skin 3 bulges, thereby causing the infusion port seat 1 to be squeezed and bulged through the skin 3. The positioning claw 6 has a certain thickness and hardness to ensure that it does not turn outward during the downward pressing process. Then press the positioning hoop 7 downward onto the positioning claw 6. Since there is a gap between the positioning claws 6, the positioning claw 6 can be retracted inward after the positioning hoop 7 slides onto the positioning claw 6, thereby circumferentially grasping the skin 3 around the infusion port seat 1, making it bulge better and being stably fixed. When the positioning hoop 7 is pressed down to the limiting protrusion 61, it is necessary to increase the force to make the positioning hoop 7 pass through the limiting protrusion 61. After passing through, the positioning hoop 7 is fixed on the positioning claw 6 by the upper and lower positioning protrusions, and the stability is better. The skin is grasped and squeezed by the squeezing of the conical sleeve and the grasping of the positioning claw 6, which can more stably position the infusion port seat 1. This solution is particularly suitable for obese patients.

[0042] In actual use, the positioning slide hoop 7 can be pressed down to which group of limiting protrusions 61 according to the thickness of the patient's fat layer. The thicker the fat layer, the thicker the skin 3 that needs to be grasped, the greater the resilience of the skin 3, and the tighter it needs to be grasped. Therefore, the positioning slide hoop 7 of the patient with a thick fat layer needs to be pressed down lower. Since the resistance is greater when passing through the limiting protrusions 61, it is necessary to increase the force. Medical staff can use this as a judgment signal to determine which group of limiting protrusions 61 the positioning slide hoop 7 is pressed down to. In actual use, the number of limiting protrusions 61 can also be set as needed.

[0043] After the infusion port 1 is fixed, select a suitable butterfly-wing non-damage needle 2. It is necessary to select a butterfly-wing non-damage needle 2 whose width after the butterfly wings are unfolded is smaller than the inner diameter of the positioning cylinder 5, so as to facilitate the removal of the positioning cylinder 5 after the puncture is completed. During the puncture, pinch the butterfly-wing non-damage needle 2 and puncture it vertically into the infusion port 1. Stop the puncture when the resistance disappears. Successful blood withdrawal indicates a successful puncture. After the puncture is completed, press the butterfly-wing non-damage needle 2 with one hand, and slide the positioning hoop 7 upward and reset with the other hand. The positioning claw 6 will expand outward and reset under its own plasticity, and the raised skin 3 will be released. Then, the pipeline of the butterfly-wing non-damage needle 2 will be passed through the avoidance notch 51 into the positioning hoop 7. At this time, the positioning device can be removed from the skin 3. During the removal process, the hand keeps pressing the butterfly-wing non-damage needle 2. After removal, the butterfly-wing non-damage needle 2 can be fixed on the skin 3. Since the inner diameter of the positioning cylinder 5 is smaller than the unfolded width of the butterfly wing of the butterfly wing non-damaging needle 2, the butterfly wing non-damaging needle 2 will not be touched during the removal process.

[0044] Embodiment 2:

[0045] like Figure 5 As shown, the difference between this embodiment and embodiment 1 is that a catheter joint avoidance area is divided on the positioning cylinder 5, and the positioning claw 6 includes a long positioning claw 62 and a short positioning claw 63, and the short positioning claw 63 is located in the catheter joint avoidance area. When using this embodiment, it is necessary to pay attention to the short positioning claw 63 area being located at the position of the catheter joint on the infusion port 1 (the catheter 11 of the infusion port 1 is connected to the central vein along the arm vein, and the position of the catheter joint can be determined by the medical staff). The effect of such a setting is that: since the infusion port 1 is connected to the catheter 11, the joint part of the catheter 11 may raise the positioning claw 6 under the skin, so that the positioning claw 6 here cannot drop to the same horizontal position as other positioning claws 6, which may cause the device to tilt, and then may affect subsequent puncture. In this embodiment, the short positioning claw 63 is located on the skin 3 at the catheter joint position, which can effectively avoid being raised by the catheter joint, so that the device can be kept as horizontal as possible.

[0046] Embodiment 3:

[0047] The difference between this embodiment and embodiment 1 is that a catheter joint avoidance area is divided on the positioning cylinder 5, and the catheter joint avoidance area is not provided with a positioning claw 6. In actual use, the area without the positioning claw 6 is aligned with the position of the catheter joint. In this embodiment, the positioning claw 6 is not provided at the position of the catheter joint, which can directly avoid the influence of the catheter joint on the positioning claw 6, so that the device can be kept horizontal as much as possible. Since the area of ​​the catheter joint part is small, only a small part of the area is not provided with the positioning claw 6 in actual use, which will not affect the overall balance of the device.

[0048] Embodiment 4:

[0049] The difference between this embodiment and the first embodiment is that a catheter joint avoidance area is divided on the positioning cylinder 5, the spacing between the positioning claws 6 in the catheter joint avoidance area is greater than the spacing between the positioning claws 6 in other areas of the positioning cylinder 5, and the spacing between the positioning claws 6 in the catheter joint avoidance area is greater than the diameter of the catheter joint. In actual use, the area with a larger spacing between the positioning claws 6 is aligned with the position of the catheter joint, and the spacing between the positioning claws 6 in this area is aligned with the catheter joint, so that the catheter joint can effectively avoid the obstruction of the positioning claws 6, so that the device can be kept as horizontal as possible.

[0050] Embodiment 5:

[0051] Combination Figure 6As shown, the difference between this embodiment and embodiment 1 is that a butterfly wing limiting ring 8 is provided in the positioning cylinder 5, and the butterfly wing limiting ring 8 is located at the bottom of the positioning cylinder 5. A limiting groove 81 for limiting the butterfly wing of the butterfly wing without damaging the needle 2 is provided on the inner wall of the butterfly wing limiting ring 8. A vertical avoidance notch 51 is also provided on the butterfly wing limiting ring 8, and the butterfly wing limiting ring 8 is also made of medical plastic. The butterfly wing limiting ring 8 is detachably connected to the positioning cylinder 5. Specifically, at least three connecting ropes 82 are circumferentially glued and fixed to the butterfly wing limiting ring 8. In this embodiment, there are four connecting ropes 82, and the four connecting ropes 82 are evenly distributed. The connecting ropes 82 are made of plastic strips. Four rope holes are correspondingly provided on the side wall of the positioning cylinder 5, and the other ends of the four connecting ropes 82 pass through the four rope holes correspondingly. One end of the connecting rope 82 passing through the positioning cylinder 5 is glued and fixed with a rope head 83, which is a plastic head. The connecting rope 82 is fixed to the positioning cylinder 5 through the rope head 83. An annular cutting blade 84 is glued and fixed to the inner edge of the top of the positioning hoop 7, and the cutting blade 84 can contact the rope head 83 and cut the rope head 83. The length of the connecting rope 82 does not need to be too long, and it is sufficient to leave a gap between the butterfly wing limit ring 8 and the positioning cylinder 5, and the gap is 0.5-1CM. In this embodiment, the positioning hoop 7 is initially located below the rope head 83.

[0052] During puncture, pinch the butterfly wing of the butterfly wing non-damage needle 2 to perform puncture. After puncture is in place, press the butterfly wing against the limiting groove 81 on the butterfly wing limiting ring 8, thereby temporarily fixing the butterfly wing. Press the butterfly wing non-damage needle 2 with one hand, and slide the positioning hoop 7 with the other hand to release the positioning claw 6. When the positioning hoop 7 slides up, the cutting blade 84 on the top cuts off the rope head 83, and the connecting rope 82 breaks. The butterfly wing limiting ring 8 is separated from the positioning cylinder 5, which can avoid touching the butterfly wing non-damage needle 2 when taking out the positioning cylinder 5. Before taking out the positioning cylinder 5, first pass the pipeline of the butterfly wing non-damage needle 2 from the avoidance notch 51 into the positioning hoop 7 to avoid the pipeline from obstructing the positioning hoop 7. After the positioning cylinder 5 is taken out, the butterfly wing limiting ring 8 is removed from the butterfly wing non-damage needle 2, and the butterfly wing of the butterfly wing non-damage needle 2 is unfolded, and the butterfly wing non-damage needle 2 is fixed on the skin 3. The butterfly wing part is fixed by the butterfly wing limiting ring 8 when the positioning cylinder 5 is removed, which not only provides a certain stabilization effect on the butterfly wing non-damage needle 2 when the positioning cylinder 5 is removed, but also makes the present solution applicable to the butterfly wing non-damage needle 2 whose butterfly wing width is larger than the inner diameter of the positioning cylinder 5. Even if the butterfly wing non-damage needle 2 whose butterfly wing width is larger than the inner diameter of the positioning cylinder 5 is used for puncture, the puncture will not be affected if the butterfly wing part is pinched. After puncture, the butterfly wing part is restricted by the butterfly wing limiting ring 8 and the removal of the positioning cylinder 5 will not be affected. The application range is wide.

[0053] Embodiment 6:

[0054] Combination Figure 7 , Figure 8 and Fig. 9As shown, the difference between this embodiment and embodiment 5 is that a conical gasket tube 9 is connected to the bottom of the butterfly wing limit ring 8, the top of the gasket tube 9 is glued and fixed on the butterfly wing limit ring 8, a puncture hole 91 is opened at the center of the bottom of the gasket tube 9, and a first annular easy-tear line 92 is provided at the connection between the gasket tube 9 and the butterfly wing limit ring 8, and a vertical second easy-tear line is provided on both sides of the gasket tube 9. The gasket tube 9 and the butterfly wing limit ring 8 can be separated by the first easy-tear line 92, and the side wall of the gasket tube 9 can be divided into two pieces by the second easy-tear line. An adhesive layer is provided on the outer wall of the gasket tube 9, and the adhesive layer is covered with release paper. The gasket tube 9 can be made of plastic film, gauze, etc.

[0055] On the basis of Example 5, after the positioning cylinder 5 is taken out, it can be torn along the first tear line 92 to separate the butterfly wing limit ring 8 and the gasket tube 9, and then it can be torn along the second tear line to divide the cylinder wall of the gasket tube 9 into two fan-shaped pieces. The two pieces are pasted on the patient's skin 3 through the adhesive layer, and can be placed under the butterfly wing when fixing the butterfly wing without damaging the needle 2, so as to avoid direct contact between the butterfly wing and the patient's skin 3, which is more comfortable.

[0056] Embodiment 7:

[0057] The difference between this embodiment and the embodiment 6 is that an adhesive layer is also provided on the inner wall of the cushioning tube 9, and the adhesive layer is also covered with release paper.

[0058] Because the butterfly wing non-damaging needle 2 has a certain length, there is still a certain distance between the butterfly wing part and the skin 3 after puncture in patients with a thin fat layer, which needs to be filled with gauze. Currently, the gauze is placed on the skin 3 and then pasted with medical tape, which is rather troublesome. In this solution, an adhesive layer is also provided on the inner wall of the gasket tube 9. After the gasket tube 9 is deformed and pasted on the skin 3, the gauze can be directly pasted on the adhesive layer on the inner wall of the gasket tube 9, which is quick and convenient, and there is no need to prepare additional tools such as medical tape.

[0059] Embodiment 8:

[0060] Combination Fig.10 As shown, the difference between this embodiment and embodiment 1 is that the positioning slide hoop 7 is also provided with an avoidance notch 51 and the avoidance notch 51 thereon is aligned with the avoidance notch 51 on the positioning cylinder 5 in the radial direction. The positioning slide hoop 7 is made of medical plastic with a certain thickness and hardness, which does not affect its overall rigidity and can meet the requirements of compressing the positioning claw 6. The width of the avoidance notch 51 on the positioning slide hoop 7 is smaller than the width of the positioning claw 6, so that the positioning claw 6 can be prevented from passing through the avoidance notch 51, and the extrusion of the positioning claw 6 is not affected.

[0061] Embodiment 9:

[0062] Combination Fig.11 and Fig.12As shown, the difference between this embodiment and embodiment 8 is that a connecting plate 71 is provided outside the avoidance notch 51 on the positioning slide hoop 7, one end of the connecting plate 71 is rotatably connected to the positioning slide hoop 7 on one side of the avoidance notch 51, and an arc groove 73 is opened on the outer wall of the positioning slide hoop 7 on the other side of the avoidance notch 51, the arc groove 73 is sealed at the top and open at the bottom, and a sliding pin 72 is fixed to the other end of the connecting plate 71, and the sliding pin 72 is slidably connected in the arc groove 73, and the sliding pin 72 needs to apply a certain external force to slide in the arc groove 73.

[0063] In this embodiment, the connecting plate 71 is in a Fig.11 The state shown, that is, the avoidance notch 51 of the positioning hoop 7 is connected to the connecting plate 71, thereby improving the overall structural strength of the positioning hoop 7. Since the top of the arc groove 73 is sealed, the connecting plate 71 is subjected to the upward reaction force of the positioning claw 6 during the downward pressing of the positioning hoop 7 and is pressed against the top of the arc groove 73, and the connecting plate 71 will not fall off from the arc groove 73. When the positioning hoop 7 is slid upward after the puncture is completed, since the butterfly wing undamaged needle 2 is manually pressed, the catheter thereon can give the connecting plate 71 a downward reaction force, so that the sliding pin 72 slides along the arc groove 73, thereby causing the connecting plate 71 to rotate downward, open the avoidance notch 51, and thus directly take out the positioning cylinder without passing the catheter out. In actual use, in other embodiments, the connecting plate 71 can also be manually rotated downward to open the avoidance notch 51.

[0064] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A puncture positioning device for an infusion port, characterized in that: It includes a positioning cylinder, a side wall of the positioning cylinder is provided with a vertically penetrating avoidance notch, the bottom of the positioning cylinder is connected to a conical sleeve surrounded by a plurality of positioning claws, the small diameter end of the conical sleeve is connected to the positioning cylinder, the positioning claws are plastic positioning claws, there is a gap between the positioning claws, a positioning sliding hoop is slidably connected to the outer wall of the positioning cylinder, the positioning sliding hoop is used to slide onto the positioning claws and clamp the positioning claws, a plurality of groups of limiting protrusions are arranged on the positioning claws on both sides from top to bottom, and the spacing between two adjacent limiting protrusions above and below is greater than the width of the positioning sliding hoop.

2. The infusion port puncture positioning device according to claim 1, characterized in that: A catheter joint avoidance area is arranged on the positioning cylinder, and the positioning claws include long positioning claws and short positioning claws, and the short positioning claws are arranged in the catheter joint avoidance area.

3. The infusion port puncture positioning device according to claim 1, characterized in that: A catheter joint avoidance area is arranged on the positioning cylinder, and no positioning claws are arranged in the catheter joint avoidance area.

4. The infusion port puncture positioning device according to claim 1, characterized in that: A catheter joint avoidance area is arranged on the positioning cylinder, and the spacing between the positioning claws in the catheter joint avoidance area is greater than the spacing between the positioning claws in other areas of the positioning cylinder.

5. The infusion port puncture positioning device according to any one of claims 1 to 4, characterized in that: A butterfly wing limiting ring is arranged in the positioning cylinder, and a limiting groove for limiting the butterfly wing without damaging the needle of the butterfly wing is opened on the inner wall of the butterfly wing limiting ring. A vertical avoidance notch is also opened on the butterfly wing limiting ring, and the butterfly wing limiting ring is detachably connected to the positioning cylinder.

6. The infusion port puncture positioning device according to claim 5, characterized in that: At least three connecting ropes are fixed circumferentially on the butterfly wing limiting ring, a rope hole is opened on the side wall of the positioning cylinder, the other end of the connecting rope passes through the rope hole, the connecting rope is fixed on the positioning cylinder through a rope head fixed on the free end, and an annular cutting blade is provided on the inner edge of the top of the positioning sliding hoop, and the cutting blade can contact the rope head.

7. The infusion port puncture positioning device according to claim 6, characterized in that: A conical gasket tube is connected to the bottom of the butterfly wing limit ring, a puncture hole is opened in the center of the bottom of the gasket tube, a first annular tear line is arranged at the connection between the gasket tube and the butterfly wing limit ring, and vertical second tear lines are arranged on both sides of the gasket tube. The gasket tube and the butterfly wing limit ring can be separated by the first tear line, and the side wall of the gasket tube can be divided into two pieces by the second tear line. An adhesive layer is arranged on the outer wall of the gasket tube, and the adhesive layer is covered with release paper.

8. The infusion port puncture positioning device according to claim 7, characterized in that: An adhesive layer is also arranged on the inner wall of the cushioning tube, and the adhesive layer is also covered with release paper.

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