Multifunctional intravenous infusion scalp needle

Abstract

The invention relates to a multifunctional intravenous infusion scalp needle which is characterized by comprising an intravenous infusion needle used for being inserted into veins of a patient, a needle handle connected with the intravenous infusion needle, an infusion catheter connected with the needle handle and a puncture needle connected with the tail end of the infusion catheter and used for being inserted into a rubber plug of a bottle opening of an infusion bottle. A measuring tape take-up device is arranged in the middle of the infusion catheter and used for taking up the overlong infusion catheter, a vein blood sampling detector is arranged at the position, close to the needle handle, of the infusion catheter and comprises a side tube arranged on the infusion catheter, a piston capable of being pulled is arranged at the tail end of the side tube, and the needle handle is arranged on the side tube. And the middle section of the side pipe is provided with a slot into which blood test paper can be inserted. The multifunctional intravenous infusion scalp needle is reasonable in design, the length of an infusion catheter can be adjusted, and individual detection can be conducted on blood of an infusion patient.

Description

Technical Field

[0001] The present invention relates to an infusion device, in particular to a multi-functional intravenous infusion scalp needle. Background Art

[0002] The intravenous infusion scalp needle is mainly used for short-term, small-dose, and less irritating intravenous infusion treatments. After analyzing the market for various types of intravenous infusion scalp needles, it is found that although there are various types of intravenous infusion scalp needles on the market, the original limitations have not been broken. There are problems such as the need to exhaust air in the infusion catheter under the Murphy's dropper, the length of the infusion catheter cannot be changed, and the traditional infusion device cannot perform simple blood tests.

[0003] Currently, the following Chinese patents have been retrieved: A disposable infusion scalp needle with the publication number CN211327430U, which includes a needle tube and a clamping block. One end of the needle tube is connected with a connector. An infusion tube is installed on the side of the connector away from the needle tube. Among them, an installation groove is opened on the side of the connector close to the infusion tube. An installation head is fixed on the side of the infusion tube close to the installation groove. A groove is opened on the inner side of the connector close to the installation groove. A convex block is fixed on the side of the installation head close to the groove. The end of the needle tube away from the connector is connected with a needle head tube. When the infusion tube is connected to the connector of this disposable infusion scalp needle, the infusion tube drives the installation head into the interior of the installation groove. The convex block is squeezed, and then the convex block enters the interior of the installation groove. When the installation head completely enters the interior of the installation groove, the convex block can be aligned with the groove, and the convex block restores its shape and abuts against the groove, so as to fix the connection of the installation head through the convex block and prevent the infusion tube from easily detaching from the needle tube.

[0004] An infusion scalp needle and indwelling needle connection fixator with the publication number CN221286494U, which includes an indwelling needle body and a scalp needle body. The indwelling needle body is composed of a needle head, a catheter, and a heparin cap. The catheter is connected between the needle head and the heparin cap. An access port is opened inside the heparin cap. The scalp needle body is inserted into the interior of the access port. A stop clamp is provided on the surface of the catheter. A starting component is provided on the surface of the heparin cap. The starting component is provided with a connection component for assisting in improving the connection effect between the scalp needle body and the heparin cap. Through the access port opened at the end of the heparin cap of this patent, the scalp needle body can be connected to the heparin cap. By using the starting component provided on the surface of the heparin cap and the connection component inside the starting component, the surface of the scalp needle body inserted into the interior of the access port can be assisted in connection, effectively reducing the situation of the scalp needle body falling off.

[0005] A safe infusion set, with the publication number CN209270504U, includes a main infusion tube body. At the top of the main infusion tube body, there is a medicine bottle insertion needle. An air inlet tube is provided on the needle holder of the medicine bottle insertion needle. At the bottom of the main infusion tube body, there is an infusion needle holder. An infusion scalp needle is provided on the infusion needle holder. An infusion connector is arranged between the infusion needle holder and the infusion scalp needle. The infusion connector includes a diamond-shaped joint and a diamond-shaped card slot. The diamond-shaped joint is arranged inside the diamond-shaped card slot and is in close contact with the diamond-shaped card slot. A medicine liquid drip chamber and a medicine liquid flow rate regulator are provided on the main infusion tube body. Upper and lower connecting tubes are respectively provided at the centers of the upper and lower ends of the medicine liquid drip chamber. A limiting float tube is vertically arranged at the center inside the medicine liquid drip chamber. The lower end of the limiting float tube is open, and a number of medicine liquid through holes are provided on the upper surface and the side wall of the limiting float tube. A floating plug ball is arranged inside the limiting float tube. It has a stable structure, is easy to operate, and has high safety performance. An infusion tube scalp needle for preventing needle stick injuries, with the publication number CN111001058B, includes a needle head, a needle holder, a needle wing, and a flexible tube. A transition tube is arranged between the flexible tube and the needle holder. A through hole is opened at the end of the transition tube away from the needle holder. A sealing slider is fixedly installed at the end of the needle head. The sealing slider is slidably installed on the inner wall of the transition tube. A number of magnet blocks evenly arranged in the circumferential direction are embedded on the corresponding surface of the sealing slider in contact with the transition tube. A positioning assembly for restricting the position of the needle head is slidably sleeved on the outer side surface of the flexible tube. By setting the transition tube and the sealing slider, under the action of the positioning assembly, the sealing slider is driven to move in the transition tube, and then when the scalp needle is not in use, it is stored in the transition tube, and when the scalp needle is in use, the scalp needle is drawn out, so as to form an integrated structure of the use state and the protection state of the scalp needle, avoiding the situation of accidental dropping and loss of using an independent protective cover.

[0006] A safe disposable scalp needle, with the publication number CN104353152B, includes a needle head and an infusion tube. The needle head is fixed at the end of the infusion tube. A needle wing is provided on the side surface of the end of the infusion tube. A safety sheath is also provided. A raised snap ring is provided on the outer wall of the end of the infusion tube. Since the needle head and the infusion tube of this safe disposable scalp needle are axially slidably arranged in a safety sheath, the front part of the safety sheath is in clearance fit with the snap ring, and the rear part is in interference fit with the snap ring. When the disposable scalp needle is used up, the infusion tube is pulled backward until the snap ring is in interference fit with the rear wall of the safety sheath to clamp the infusion tube, and the needle head is completely retracted into the safety sheath, thus avoiding accidental injury to medical staff.

[0007] The above 5 existing patents cannot adjust the length of the infusion catheter and cannot detect individual items of the blood of the infusion person. Summary of the Invention

[0009] In view of the above deficiencies of the prior art, the object of the present invention is to provide a multifunctional intravenous infusion scalp needle, which is reasonably designed, can adjust the length of the infusion catheter, and can detect individual items of the blood of the infusion person.

[0010] The present invention is achieved through the following technical solutions: The multifunctional intravenous infusion scalp needle of the present invention is characterized in that it includes an intravenous infusion needle for inserting into the vein of a patient, a needle handle connected to the intravenous infusion needle, an infusion catheter connected to the needle handle, and a puncture needle connected to the tail end of the infusion catheter for inserting into the rubber stopper of the infusion bottle mouth. A tape measure wire reel is provided in the middle of the infusion catheter for winding up the overly long infusion catheter. A venous blood collection detector is provided at a position on the infusion catheter close to the needle handle. The venous blood collection detector includes a side tube provided on the infusion catheter. A piston that can be pulled is provided at the tail end of the side tube, and a slot for inserting a blood test strip is provided in the middle section of the side tube.

[0011] Preferably, a liquid medicine filtering and exhaust device is connected in series on the above-mentioned infusion catheter.

[0012] Preferably, the above-mentioned liquid medicine filtering and exhaust device includes an outer tube body and an exhaust mechanism and a filtering mechanism sequentially arranged in the outer tube body. The exhaust mechanism includes an exhaust channel communicated with the infusion catheter. A floating cylinder that can float with the amount of liquid medicine is provided at the inlet end position of the exhaust channel. A lever is fixed on the floating cylinder, and a sealing pad for blocking the on / off of the exhaust channel is fixed on the free end of the lever.

[0013] Preferably, an inner extension tube is provided at the position where the above-mentioned sealing pad blocks the on / off of the exhaust channel. A spring is sleeved on the periphery of the inner extension tube, the sealing pad and the lever.

[0014] Preferably, the above-mentioned filtering mechanism is composed of a microporous filter membrane provided in the outer tube body. The microporous filter membrane is specifically a polytetrafluoroethylene filter membrane or a polyvinylidene fluoride filter membrane.

[0015] Preferably, a flow regulator is provided on the above-mentioned infusion catheter.

[0016] Preferably, a liquid stop clip is provided on the above-mentioned infusion catheter.

[0017] Preferably, the above-mentioned tape measure wire reel includes a disc body and a rotating shaft coaxially arranged inside the disc body. A folded infusion catheter is wound around the rotating shaft. A partial section of the rotating shaft extends out of the disc body and can be driven by a rotating handle to rotate the rotating shaft, so that the folded infusion catheter is retracted into the disc body.

[0018] The usage method of the multifunctional intravenous infusion scalp needle of the present invention is as follows: with the stop clamp closed, insert the puncture needle into the rubber stopper of the infusion bottle mouth, insert the intravenous infusion needle into the patient's vein, and a small amount of the patient's blood will flow into the infusion catheter. At this time, by pulling the piston, the blood flows into the side tube, and the blood test strip located in the slot of the side tube contacts the patient's blood, enabling the detection of individual items of the blood (depending on the different test strips selected, different items can be detected, such as a blood glucose test strip for testing blood glucose). Then open the stop clamp, and the medicinal liquid is transported to the patient through the infusion catheter. Additionally, the length of the infusion catheter can be adjusted by adjusting the tape winder to facilitate the use by different patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the present invention during blood collection by the venous blood collection detector; Figure 3 is a schematic structural diagram of the present invention after detection by the venous blood collection detector; Figure 4 is a schematic structural diagram of the medicinal liquid filtering and air exhausting device (air exhausting state); Figure 5 is a schematic structural diagram of the medicinal liquid filtering and air exhausting device (infusion state); Figure 6 is Figure 4 a schematic structural diagram after removing the floating cylinder; Figure 7 is a partial schematic structural diagram of the air exhausting mechanism (floating cylinder, lever and gasket); Figure 8 is a sectional view of the tape winder. DETAILED DESCRIPTION OF THE INVENTION

[0022] The following further explains and illustrates the present invention in conjunction with specific embodiments and the drawings.

[0023] The multifunctional intravenous infusion scalp needle of the present invention includes an intravenous infusion needle 1 for inserting into the patient's vein, a needle handle 2 connected to the intravenous infusion needle, an infusion catheter 3 connected to the needle handle, and a puncture needle 4 connected to the tail end of the infusion catheter for inserting into the rubber stopper of the infusion bottle mouth. A tape winder 5 is provided in the middle of the infusion catheter to wind up the overly long infusion catheter. The tape winder 5 is an existing component, that is, in the structure of a tape measure, capable of winding up the redundant length of the infusion catheter, or the tape winder 5 has the following structure.

[0024] The tape measure rewinder 5 includes a disc body 501 and a rotating shaft 502 coaxially arranged inside the disc body. A folded infusion catheter is wound around the rotating shaft. A partial section of the rotating shaft extends out of the disc body and can be driven to rotate by a turning handle, so that the folded infusion catheter is retracted into the disc body.

[0025] A venous blood sampling detector 6 is provided at a position on the infusion catheter 3 close to the needle handle 2. The venous blood sampling detector 6 includes a side tube 61 provided on the infusion catheter. A piston 62 that can be pulled is provided at the tail end of the side tube. A slot 63 into which a blood test strip 7 can be inserted is provided in the middle section of the side tube. The piston 62 is connected to a handle to facilitate the pulling action of the user. According to different items to be tested, the blood test strip 7 inserted into the slot 63 can be replaced, such as a blood glucose test strip, a vitamin D test strip, etc.

[0026] After the blood contacts the blood test strip 7 (a small amount of blood overflows into the infusion catheter after the operator inserts the venous infusion needle 1 into the patient's scalp), the blood test strip 7 can be taken out of the slot 63, and then the piston can be pushed to the end to prevent subsequent blood or liquid medicine from overflowing from the slot 63.

[0027] To meet the use requirements, a flow regulator 9 is provided on the infusion catheter. A liquid stop clamp 10 is provided on the infusion catheter (the flow regulator 9 and the liquid stop clamp 10 are prior arts and will not be elaborated here). Before the operator inserts the venous infusion needle 1 into the patient's scalp, the infusion pipeline is interrupted through the liquid stop clamp 10. After the venous infusion needle 1 is inserted into the patient's scalp, the closing of the liquid stop clamp 10 is released to achieve smooth infusion of the infusion tube. The liquid stop clamp 10 is provided at a position close to the venous blood sampling detector 6, so that after the blood flows back to the venous blood sampling detector 6, the liquid stop clamp 10 can prevent excessive blood return.

[0028] To filter and exhaust the liquid medicine, a liquid medicine filtering and exhaust device 8 is connected in series on the infusion catheter. The liquid medicine filtering and exhaust device 8 can be an existing device or have the following specific structure.

[0029] The liquid medicine filtering and exhaust device 8 includes an outer tube body 81 and an exhaust mechanism 82 and a filtering mechanism 83 sequentially arranged inside the outer tube body. The exhaust mechanism 82 includes an exhaust channel 84 communicated with the infusion catheter. A float 85 that can float and sink according to the amount of the liquid medicine is provided at the inlet end position of the exhaust channel. A lever 86 is fixed on the float 85, and a sealing pad 87 for blocking the on-off of the exhaust channel is fixed on the free end of the lever. During operation, when the float 85 floats, it drives the lever 86 and the sealing pad 87 to block the exhaust channel. When the float 85 sinks, it drives the lever and the sealing pad 87 to disengage from blocking the exhaust channel. During use, the outer tube body 81 can be set horizontally. This design effectively filters the liquid medicine and exhausts the gas in the pipeline while ensuring the safety of infusion.

[0030] At the position where the gasket 87 blocks and unblocks the exhaust passage, there is an inner extension pipe 88. A spring 89 is sleeved on the periphery of the inner extension pipe 88, the gasket 87 and the lever 86 (this spring helps to restore the blockage of the exhaust passage by the gasket). The floating and sinking of the float drives the opening and closing of the gasket to block the port of the inner extension pipe, realizing the opening and closing of the exhaust passage. The function of this spring 89 is to make it easy for the gasket 87 to block the exhaust passage, that is, when the float 85 sinks, it drives the lever 86 and the gasket 87 to disengage from blocking the exhaust passage, and at the same time the spring 89 bends. At this time, the gas in the infusion tube can be discharged through the exhaust passage 80 (as Figure 4 shown by the arrow direction in the figure is the gas discharge direction). When the float 85 floats, under the driving force of the spring 89 returning to its original state and the buoyancy of the float, it drives the lever 86 and the gasket 87 to block the exhaust passage (as Figure 5 shown in the figure).

[0031] The spring 89 provides an elastic pre-tightening force, enabling the float 85 to respond quickly when the liquid medicine decreases and driving the gasket 87 to open the exhaust passage, while assisting the gasket to closely fit the end of the inner extension pipe 88 when the liquid medicine is full, ensuring the reliable sealing of the exhaust passage. This structure enhances the sensitivity and sealing stability of the exhaust mechanism, and further optimizes the automatic exhaust performance.

[0032] The liquid medicine filtering and exhaust device 8 adopts a modular design, and realizes the dual functions of precise liquid medicine filtration and automatic exhaust without changing the original structure of the infusion pipeline, effectively improving the safety and reliability of clinical infusion.

[0033] The filtering mechanism 83 is composed of a microporous filter membrane arranged inside the outer pipe body, preferably a polytetrafluoroethylene (PTFE) filter membrane or a polyvinylidene fluoride (PVDF) filter membrane. This filter membrane has stable chemical inertness and excellent biocompatibility, can effectively filter out particulate impurities in the liquid medicine, and at the same time maintain the permeability of the liquid medicine to ensure infusion safety.

[0034] The usage method of the multifunctional intravenous infusion scalp needle of the present invention: with the stop clamp closed, insert the puncture needle into the rubber stopper of the infusion bottle mouth, insert the intravenous infusion needle into the patient's vein. A small amount of the patient's blood will flow into the infusion catheter. At this time, by pulling the piston, the blood flows into the side tube, and the blood test strip located in the slot of the side tube contacts the patient's blood, and individual items of the blood can be detected (depending on the different test strips selected, different items can be detected, such as a blood glucose test strip for testing blood glucose). Then open the stop clamp, and the liquid medicine is transported to the patient through the infusion catheter. In addition, the length of the infusion catheter can be adjusted by adjusting the tape measure rewinder to facilitate the use of different patients.

[0035] The above are only the preferred embodiments of the present invention. Without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A multifunctional intravenous infusion scalp needle, characterized in that: It includes an intravenous infusion needle for inserting into a patient's vein, a needle handle connected to the intravenous infusion needle, an infusion catheter connected to the needle handle, and a puncture needle connected to the end of the infusion catheter for inserting into the rubber stopper of the infusion bottle. A tape winder is provided in the middle of the infusion catheter to wind up the excessive infusion catheter. A venous blood sampling detector is provided at a position on the infusion catheter close to the needle handle. The venous blood sampling detector includes a side tube provided on the infusion catheter. A piston that can be pulled is provided at the end of the side tube. A slot for inserting a blood test strip is provided in the middle section of the side tube.

2. The multifunctional intravenous infusion scalp needle according to claim 1, wherein: A liquid medicine filtering and air exhausting device is connected in series on the infusion catheter.

3. The multifunctional intravenous infusion scalp needle according to claim 2, characterized in that: The liquid medicine filtering and air exhausting device includes an outer tube body, and an air exhausting mechanism and a filtering mechanism provided in the outer tube body in sequence. The air exhausting mechanism includes an air exhausting channel communicated with the infusion catheter. A float that can float up and down according to the amount of the liquid medicine is provided at the inlet end position of the air exhausting channel. A lever is fixedly provided on the float, and a sealing pad for blocking the on-off of the air exhausting channel is fixedly provided at the free end of the lever.

4. The multifunctional intravenous infusion scalp needle according to claim 3, characterized in that: An inner extension tube is provided at the position where the sealing pad blocks the on-off of the air exhausting channel. A spring is sleeved on the periphery of the inner extension tube, the sealing pad and the lever.

5. The multifunctional intravenous infusion scalp needle according to claim 3, characterized in that: The filtering mechanism is composed of a microporous filter membrane provided in the outer tube body.

6. The multifunctional intravenous infusion scalp needle according to claim 5, characterized in that: The microporous filter membrane is specifically a polytetrafluoroethylene filter membrane or a polyvinylidene fluoride filter membrane.

7. The multifunctional intravenous infusion scalp needle according to claim 1, characterized in that: A flow regulator is provided on the infusion catheter.

8. The multifunctional intravenous infusion scalp needle according to claim 1, wherein: A liquid stop clamp is provided on the infusion catheter.

9. The multifunctional intravenous infusion scalp needle according to claim 1, characterized in that: The tape winder includes a disc body and a rotating shaft coaxially provided inside the disc body. A folded infusion catheter is wound around the rotating shaft. A partial section of the rotating shaft extends out of the disc body and can be driven by a turning handle to rotate the rotating shaft, so that the folded infusion catheter is retracted into the disc body.

10. A method for using a multifunctional intravenous infusion scalp needle, characterized in that: With the liquid stop clamp closed, insert the puncture needle into the rubber stopper of the infusion bottle, and insert the intravenous infusion needle into the patient's vein. A small amount of the patient's blood will flow into the infusion catheter. At this time, by pulling the piston, the blood flows into the side tube. The blood test strip located in the slot of the side tube contacts the patient's blood, and individual items of the blood can be detected. Then open the liquid stop clamp, and the liquid medicine is transported to the patient through the infusion catheter. In addition, the length of the infusion catheter can be adjusted by adjusting the tape winder to facilitate the use of different patients.

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