Intramedullary infusion device in high-cold environment

Abstract

The application discloses a marrow cavity transfusion device in an alpine environment and belongs to the technical field of medical devices. The device comprises a shell, a puncture needle and a transfusion assembly. A supporting seat is fixedly arranged on one side of the shell at an opening end. An ejection assembly is arranged in the shell. A threaded shell is fixedly arranged on the side of the supporting seat away from the shell. The puncture needle is composed of a needle head and a needle tail. The needle head and the needle tail are fixedly connected with each other. The side of the needle head away from the needle tail is conically arranged. A depth limiting assembly is arranged on the threaded shell. The marrow cavity can be transfused in an extreme environment, the transfusion is more stable, the input liquid can be heated or cooled as required, the device has a small volume and is easy to carry.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to an intraosseous infusion device for use in cold environments. Background Technology

[0002] In the resuscitation of critically ill patients, rapidly establishing vascular access is crucial. For patients with hemorrhagic shock, in addition to rapid and effective hemostasis, rapid blood transfusion and fluid resuscitation via vascular access are important measures to save the patient's life. For patients with cardiac arrest, adrenaline, amiodarone, and other drugs need to be administered via vascular access. For septic shock, rapid fluid resuscitation and vasoactive drugs need to be administered via vascular access. Clinically available routes of administration include peripheral veins, central veins, endotracheal intubation, and intraosseous cavity.

[0003] Currently, most hospitals in my country first attempt to establish peripheral venous access, and only consider establishing central venous access if puncture fails. However, patients with trauma or shock often have peripheral circulatory failure, poor or even collapsed peripheral venous networks, or limb injuries, which affect the success rate and time required for peripheral venous puncture. Establishing a central venous catheter requires relatively high technical skills, is time-consuming, and has a high failure rate (generally 10%-40%), especially for patients undergoing continuous CPR after cardiac arrest. Endotracheal intubation allows for the administration of only a portion of medications, and fluid administration is limited. These factors can lead to the loss of optimal medication administration time and even resuscitation failure.

[0004] Compared to peripheral and central venous access, intraosseous infusion can establish an effective fluid resuscitation pathway within 10-30 seconds, with a higher success rate. It offers significant advantages for rapid, large-volume blood transfusions, fluid replacement, and medication administration. Therefore, the American Heart Association, the European Resuscitation Committee, and the International Liaison Committee on Resuscitation all recommend prioritizing intraosseous vascular access in critically ill patients when peripheral venous access is difficult, followed by central venous access once the patient's condition has stabilized.

[0005] Currently, many intraosseous infusion devices exist on the market, many of which are electrically powered (e.g., Publication No.: CN100382854C). However, in extreme environments, the electrical power can be affected by ambient temperature, impacting the infusion effect. Existing intraosseous infusion devices cannot control the temperature of the infused fluid. In extremely cold conditions, excessively low fluid temperatures can damage the body, or even cause the fluid to freeze, leading to infusion failure.

[0006] In view of this, the present invention proposes an intramedullary infusion device suitable for cold environments that overcomes the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this invention is to provide an intraosseous infusion device for use in cold environments, in order to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An intraosseous cavity infusion device for high-altitude and cold environments includes a housing, a puncture needle, and an infusion assembly. A support base is fixedly installed on one side of the housing at the open end. An ejection assembly is installed inside the housing. A threaded shell is fixedly installed on the side of the support base away from the housing.

[0010] The puncture needle consists of a needle head and a needle tail, wherein the needle head and the needle tail are fixedly connected to each other, the side of the needle head away from the needle tail is tapered, and a depth-limiting component is provided on the threaded shell.

[0011] As a preferred embodiment of the present invention, the ejection assembly includes a high-pressure spring disposed inside the housing, and an ejection plate is slidably disposed on one side of the housing located on the high-pressure spring. The two ends of the high-pressure spring are respectively fixedly connected to the housing and the ejection plate.

[0012] The outer side of the housing is symmetrically provided with snap-fit ​​components;

[0013] A connecting component is provided between the ejection plate and the needle tail.

[0014] As a preferred embodiment of the present invention, a slot is provided on one side of the housing, the snap-fit ​​assembly includes a buckle disposed on one side of the slot, and the buckle is hinged to the housing, one end of the buckle is slidably snapped into the inside of the slot, and the buckle is configured to abut against the ejector plate;

[0015] A first spring is provided between the buckle and the housing, and the two ends of the first spring are fixedly connected to the buckle and the housing, respectively.

[0016] As a preferred embodiment of the present invention, the ejector plate is provided with symmetrical slide rails, the connecting assembly includes connecting blocks slidably disposed inside the slide rails, and the adjacent sides of the two connecting blocks are both arranged in an arc shape. A second spring is provided in the middle of the slide rail, and the two ends of the second spring are respectively fixedly connected to the two connecting blocks.

[0017] The needle tail is located in the middle of the two connecting blocks.

[0018] As a preferred embodiment of the present invention, the threaded shell has symmetrically formed depth grooves on both sides, the depth limiting component includes a threaded sleeve threaded on the threaded shell, a depth limiting block is symmetrically slidably disposed inside the threaded sleeve, and the depth limiting block is slidably disposed inside the depth limiting groove, the depth limiting block and the needle tail are configured to abut against each other.

[0019] As a preferred embodiment of the present invention, the infusion assembly includes an arc-shaped plate, a limiting clamp, and an infusion tube. Medical tape is provided on both sides of the arc-shaped plate, and a limiting groove is formed in the middle of the arc-shaped plate. The limiting clamp is fixedly disposed on one side of the arc-shaped plate, and the infusion tube passes through the limiting clamp.

[0020] As a preferred embodiment of the present invention, a connector is fixedly provided on the side of the needle tail away from the needle tip, and the connector is matched with the infusion tube.

[0021] In a preferred embodiment of the present invention, a conductor is fixedly disposed on one side of the arc-shaped plate located on the limiting clamp, and the conductor is sleeved on the infusion tube.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. In this invention, the puncture depth of the puncture needle is adjusted by controlling the rotation of the threaded sleeve on the threaded shell. The threaded sleeve is placed against the injection position, and the buckle is disengaged from the slot. At this time, the high-pressure spring ejects the ejector plate under high pressure, causing the ejector plate to eject the puncture needle synchronously, so that the puncture needle can be inserted into the bone marrow cavity. The depth limiting block abuts the needle tail, thus limiting the puncture depth. The ejection device ensures that this invention is not affected by extreme environments and has high practicality.

[0024] 2. In this invention, the arc-shaped plate controls the needle to pass through the limiting groove, so that the needle is located at the innermost side of the limiting groove, thereby limiting the puncture needle. The arc-shaped plate is fixed to the human body with medical tape, which facilitates the infusion work. The infusion tube can be connected to the puncture needle through the connector, and the liquid can be heated or cooled as needed through the conductor. This invention is small in size and easy to carry.

[0025] 3. The intraosseous infusion device of the present invention is suitable not only for use in extremely cold environments, but also for use in general environments. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is an exploded view of the threaded shell and threaded sleeve of the present invention;

[0028] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the housing of the present invention;

[0029] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0030] Figure 5This is a schematic diagram of the connection structure between the ejection plate and the puncture needle of the present invention;

[0031] Figure 6 This is a schematic diagram of the infusion assembly structure of the present invention;

[0032] Figure 7 This is a schematic cross-sectional view of the threaded sleeve structure of the present invention.

[0033] In the diagram: 1. Shell; 2. Puncture needle; 21. Needle tip; 22. Needle tail; 3. Support base; 4. Ejection assembly; 41. High-pressure spring; 42. Ejection plate; 5. Threaded shell; 6. Depth limiting assembly; 61. Depth limiting groove; 62. Threaded sleeve; 63. Depth limiting block; 7. Snap-fit ​​assembly; 71. Snap-fit ​​groove; 72. Snap-fit; 73. First spring; 8. Connecting assembly; 81. Slide rail; 82. Connecting block; 83. Second spring; 9. Connector; 10. Infusion assembly; 101. Arc plate; 102. Limiting clamp; 103. Infusion tube; 104. Limiting groove; 11. Conductor. Detailed Implementation

[0034] 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 a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] Example

[0036] Please see the appendix Figure 1-7 A bone marrow cavity infusion device for high-altitude and cold environments includes a housing 1, a puncture needle 2 and an infusion assembly 10. A support base 3 is fixedly installed on one side of the housing 1 at the open end. An ejection assembly 4 is installed inside the housing 1. A threaded shell 5 is fixedly installed on the side of the support base 3 away from the housing 1.

[0037] The puncture needle 2 consists of a needle head 21 and a needle tail 22, wherein the needle head 21 and the needle tail 22 are fixedly connected to each other, and the side of the needle head 21 away from the needle tail 22 is tapered. A depth-limiting component 6 is provided on the threaded shell 5.

[0038] In a further embodiment of the present invention, the housing 1 supports the entire invention, and the support base 3 facilitates the alignment of the housing 1, thereby adjusting the ejection direction of the puncture needle 2. The puncture needle 2 is used to penetrate the bone marrow cavity. The needle tip 21 is made of metal and has a sharp, tapered end with the same diameter as existing needle tips 21. The needle tail 22 is made of non-metallic material, using medical-grade polyethylene with low specific heat capacity, so as not to cause burns or frostbite to the skin under extreme heat or cold conditions. The threaded shell 5 supports the depth limiting component 6, which limits the depth of the needle tip 21 entering the human body.

[0039] Specifically, the ejection assembly 4 includes a high-pressure spring 41 disposed inside the housing 1, and an ejection plate 42 is slidably disposed on one side of the housing 1 located on the high-pressure spring 41. The two ends of the high-pressure spring 41 are fixedly connected to the housing 1 and the ejection plate 42 respectively.

[0040] The outer side of the housing 1 is symmetrically provided with snap-fit ​​components 7;

[0041] A connecting component 8 is provided between the ejection plate 42 and the needle tail 22.

[0042] In a further embodiment of the present invention, one end of the high-pressure spring 41 is limited and fixed by the housing 1. When the high-pressure spring 41 is inside the housing 1, it is in a compressed state and ejects the ejection plate 42 under high pressure. The ejection plate 42 pushes the needle tail 22 to eject through the connecting component 8, so that the puncture needle 2 can be injected into the human body. Ejection by the high-pressure spring 41 is not affected by extreme environments and has high practicality. The snap-fit ​​component 7 can limit the high-pressure spring 41 in the compressed state, thereby controlling the high-pressure spring 41 to eject the ejection plate 42.

[0043] Specifically, a slot 71 is provided on one side of the housing 1, and the snap-fit ​​assembly 7 includes a buckle 72 disposed on one side of the slot 71. The buckle 72 is hinged to the housing 1, and one end of the buckle 72 is slidably snapped into the inside of the slot 71. The buckle 72 is abutted against the ejector plate 42.

[0044] A first spring 73 is provided between the buckle 72 and the housing 1, and the two ends of the first spring 73 are fixedly connected to the buckle 72 and the housing 1 respectively.

[0045] In a further embodiment of the present invention, the housing 1 provides rotational support for the buckle 72, and the slot 71 is through-hole. The buckle 72 is disposed inside the slot 71 and can abut against the ejector plate 42. The first spring 73 provides elastic support for the buckle 72, thereby reducing the probability of the buckle 72 falling off the slot 71 without external force.

[0046] Specifically, the ejector plate 42 is symmetrically provided with slide rails 81, and the connecting component 8 includes connecting blocks 82 that are slidably disposed inside the slide rails 81. The adjacent sides of the two connecting blocks 82 are both arc-shaped. A second spring 83 is provided in the middle of the slide rails 81, and the two ends of the second spring 83 are fixedly connected to the two connecting blocks 82 respectively.

[0047] The needle tail 22 is located in the middle of the two connecting blocks 82.

[0048] In a further embodiment of the present invention, the connecting block 82 is slidably limited by the slide rail 81, and the two connecting blocks 82 are slid toward the center by the second spring 83 to clamp and limit the needle tail 22. The connecting block 82 is arc-shaped on the side near the needle tail 22, and the two connecting blocks 82 can be disengaged from the needle tail 22 by twisting the housing 1.

[0049] Specifically, the threaded shell 5 has symmetrically opened depth grooves 61 on both sides. The depth limiting component 6 includes a threaded sleeve 62 threaded on the threaded shell 5. A depth limiting block 63 is symmetrically slidably disposed inside the threaded sleeve 62, and the depth limiting block 63 is slidably disposed inside the depth limiting groove 61. The depth limiting block 63 and the needle tail 22 are configured to abut against each other.

[0050] In a further embodiment of the present invention, the depth limiting block 63 is slidably limited by the depth limiting groove 61, and rotated on the threaded shell 5 by the threaded sleeve 62, thereby adjusting the height of the depth limiting block 63 from the human skin, and thus adjusting the puncture depth of the puncture needle 2. When the puncture needle 2 is ejected, the depth limiting block 63 abuts against the needle tail 22, thereby controlling the puncture depth of the puncture needle 2. Figure 2 The depth limiting groove 61 slides and limits the depth limiting block 63, so that the relative position of the depth limiting block 63 does not change when the needle tail 22 rotates. When disassembling, after the puncture needle 2 is separated from the connecting block 82, the depth limiting block 63 will slide away from the depth limiting groove 61. The needle tail 22 has symmetrical notches. By rotating the threaded sleeve 62 and aligning the depth limiting block 63 inside the threaded sleeve 62 with the notches on the needle tail 22, the depth limiting block 63 can be removed from the needle tail 22 and the human body.

[0051] Specifically, the infusion assembly 10 includes an arc plate 101, a limiting clamp 102, and an infusion tube 103. Medical tape is provided on both sides of the arc plate 101, and a limiting groove 104 is provided in the middle of the arc plate 101. The limiting clamp 102 is fixedly set on one side of the arc plate 101, and the infusion tube 103 passes through the limiting clamp 102.

[0052] In a further embodiment of the present invention, the arc-shaped plate 101 passes through the needle 21 via the limiting groove 104 to limit the puncture needle 2, and is fixed to the human body with medical tape to facilitate infusion. A limiting clamp 102 is used to limit the infusion tube 103, facilitating heating or cooling of the infusion tube 103. The arc-shaped plate 101 is made of non-metallic material, using medical-grade polyethylene with a low specific heat capacity, to prevent burns or frostbite to the skin under extreme heat or cold conditions.

[0053] Specifically, a connector 9 is fixedly provided on the side of the needle tail 22 away from the needle tip 21, and the connector 9 is matched with the infusion tube 103.

[0054] In a further embodiment of the present invention, the connector 9 facilitates the connection between the infusion tube 103 and the puncture needle 2, thereby enabling infusion into the medullary cavity.

[0055] Specifically, the arc plate 101 is fixedly provided with a conductor 11 on one side of the limiting clamp 102, and the conductor 11 is sleeved on the infusion tube 103.

[0056] In a further embodiment of the present invention, the conductor 11 facilitates the conduction of temperature of the infusion tube 103, which is convenient for heating or cooling the liquid during infusion. External heating can be used, for example, by heating through a heat-conducting wire.

[0057] Working principle of the invention:

[0058] By controlling the rotation of the threaded sleeve 62 on the threaded shell 5, the puncture depth of the puncture needle 2 is adjusted. The threaded sleeve 62 is placed against the injection position, and the buckle 72 is disengaged from the slot 71. At this time, the high-pressure spring 41 ejects the ejection plate 42 under high pressure, causing the ejection plate 42 to drive the puncture needle 2 to be ejected synchronously, so that the puncture needle 2 can be inserted into the bone marrow cavity. The depth limiting block 63 abuts against the needle tail 22, so that the puncture depth is limited. The ejection device is not affected by extreme environments and has high practicality.

[0059] The control arc plate 101 guides the needle 21 through the limiting groove 104, positioning the needle 21 at the innermost side of the limiting groove 104, thereby limiting the puncture needle 2. The arc plate 101 is then fixed to the human body with medical tape, facilitating infusion. The infusion tube 103 can be connected to the puncture needle 2 via the connector 9, and the liquid can be heated or cooled as needed via the conductor 11. This invention is small in size and easy to carry.

[0060] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. An intraosseous cavity infusion device for high-altitude and cold environments, comprising a housing (1), a puncture needle (2), and an infusion assembly (10), characterized in that: The housing (1) is fixedly provided with a support base (3) on one side of the opening end, and an ejection assembly (4) is provided inside the housing (1). A threaded shell (5) is fixedly provided on the side of the support base (3) away from the housing (1). The puncture needle (2) is composed of a needle head (21) and a needle tail (22), wherein the needle head (21) and the needle tail (22) are fixedly connected to each other. The side of the needle head (21) away from the needle tail (22) is tapered. A depth-limiting assembly (6) is provided on the threaded shell (5). The ejection assembly (4) includes a high-pressure spring (41) disposed inside the housing (1), and an ejection plate (42) is slidably disposed on one side of the high-pressure spring (41) on the housing (1); the two ends of the high-pressure spring (41) are fixedly connected to the housing (1) and the ejection plate (42) respectively; wherein a snap-fit ​​assembly (7) is symmetrically disposed on the outer side of the housing (1); a connecting assembly (8) is disposed between the ejection plate (42) and the needle tail (22), and a slot is provided on one side of the housing (1). 71), the snap-fit ​​assembly (7) includes a snap fastener (72) disposed on one side of the slot (71), and the snap fastener (72) is hinged to the housing (1), one end of the snap fastener (72) is slidably snapped into the inside of the slot (71), and the snap fastener (72) is abutted against the ejector plate (42); wherein a first spring (73) is disposed between the snap fastener (72) and the housing (1), and the two ends of the first spring (73) are fixedly connected to the snap fastener (72) and the housing (1) respectively.

2. The intraosseous cavity infusion device for high-altitude and cold environments according to claim 1, characterized in that: The ejector plate (42) is symmetrically provided with slide rails (81), and the connecting assembly (8) includes connecting blocks (82) slidably disposed inside the slide rails (81), and the two adjacent sides of the two connecting blocks (82) are both arranged in an arc shape. A second spring (83) is provided in the middle of the slide rails (81), and the two ends of the second spring (83) are respectively fixedly connected to the two connecting blocks (82); wherein the needle tail (22) is disposed in the middle of the two connecting blocks (82).

3. The intraosseous cavity infusion device for high-altitude and cold environments according to claim 2, characterized in that: The threaded shell (5) has symmetrically opened depth grooves (61) on both sides. The depth limiting component (6) includes a threaded sleeve (62) threaded on the threaded shell (5). A depth limiting block (63) is symmetrically slidably arranged inside the threaded sleeve (62), and the depth limiting block (63) is slidably arranged inside the depth limiting groove (61). The depth limiting block (63) and the needle tail (22) are configured to abut against each other.

4. The intraosseous cavity infusion device for high-altitude and cold environments according to claim 3, characterized in that: The infusion assembly (10) includes an arc plate (101), a limiting clamp (102), and an infusion tube (103); medical tape is provided on both sides of the arc plate (101), and a limiting groove (104) is provided in the middle of the arc plate (101). The limiting clamp (102) is fixedly provided on one side of the arc plate (101), and the infusion tube (103) passes through the limiting clamp (102).

5. The intraosseous cavity infusion device for high-altitude and cold environments according to claim 4, characterized in that: A connector (9) is fixedly provided on the side of the needle tail (22) away from the needle tip (21), and the connector (9) is matched with the infusion tube (103).

6. The intraosseous cavity infusion device for high-altitude and cold environments according to claim 5, characterized in that: The arc plate (101) is fixedly provided with a conductor (11) on one side of the limiting clamp (102), and the conductor (11) is sleeved on the infusion tube (103).

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