CN201286886Y - Manual marrow intra-cavity infusion device - Google Patents

Abstract

The utility model comprises a handle and a drill bit, and the drill bit is a trocar needle structure, which consists of two parts, a casing pipe and a stylet needle. The casing is a hollow structure, and the stylet is a solid body, which is located in the cavity of the casing. The tip of the stylet passes through the casing and is closely connected with the tip of the casing to form a four-sided solid drill bit. The non-needle tip end of the needle is connected with the handle, and the non-needle tip end of the cannula has a plastic base with a standard infusion screw interface, which is tightly connected with the handle. The outer diameter of the cannula is 1.8mm, and the inner diameter is 1.5mm. The length L of the base is 20-30mm. The optimal length of the quadrangular drill protruding from the base is 25mm, and the casing and stylet are made of high-strength and tough alloy material. The utility model has the advantages of small size, convenient portability, safe and reliable use, can greatly shorten the time for establishing a transfusion channel, and improve the success rate of rescue.

Description

Manual intraosseous infusion device

technical field

The utility model relates to an infusion device, in particular to a manual intraosseous infusion device for establishing an infusion channel in the bone marrow cavity.

Background technique

At present, the hospital uses venous vascular infusion to treat patients with infusion, which is to infuse liquid, medicine, and blood into the patient's body through the patient's venous blood. When peripheral blood vessels collapse, or peripheral venipuncture cannot be performed due to extensive body surface burns, or puncture fails repeatedly, the rescue of the patient fails. According to statistics, if the infusion channel can be established in the first 10 minutes for the wounded in wartime hemorrhagic shock, the casualty rate will be greatly reduced. The traditional intravenous infusion takes an average of 12 minutes to establish, while it only takes 1 minute to pass through the bone marrow cavity. The establishment of intravenous infusion access has won precious time for saving the patient's life.

The mechanism of intraosseous cavity infusion is related to the internal anatomy of bone tissue. The bone marrow cavity is connected to the large vein of systemic circulation through Haversian central canal and nutrient vein, which can ensure that the fluid infused into the bone marrow cavity can quickly return to the large vein of systemic circulation. , to achieve the same effect as central venous infusion; in addition, the bone marrow cavity will not collapse with the collapse of the peripheral vein, so when the peripheral vein collapses, liquid drugs can still be injected into the patient's body through the bone marrow cavity.

Contents of the invention

The purpose of this utility model is to provide a manual intraosseous infusion device that can establish an infusion channel within one or two minutes, so as to win precious time for rescuing the wounded and sick in clinical or wartime, and greatly reduce the pain of the wounded and sick. fatality rate.

In order to achieve the above object, the utility model includes a handle and a drill bit, and the drill bit is a trocar structure, including a casing and a stylet. The casing is a hollow structure, and the stylet is a solid body, which is located in the cavity of the casing. The needle tip of the stylet passes through the casing and is closely connected with the tip of the casing to form a four-sided solid drill bit. The non-needle tip end of the needle is connected with the handle, and the non-needle tip end of the cannula has a plastic base with a standard infusion screw interface, which is tightly connected with the handle. The outer diameter of the cannula is 1.8mm, the inner diameter is 1.5mm, and the four-sided solid drill The length L of the base is 20-30mm. The optimal length of the quadrangular drill protruding from the base is 25mm, and the casing and stylet are made of high-strength and tough alloy material.

The principle of the utility model is to apply the principle and technology of a trocar. The puncture site is the tibia or the long bone of the arm. Within a few seconds, the drill bit can enter the bone marrow cavity through the periosteum, and the stylet can be taken out. Continuously infuse emergency fluid through the cannula, and establish an infusion channel in a short time to win rescue time.

To sum up, the utility model has the advantages of small size, convenient portability, safe and reliable use, can greatly shorten the time for establishing an infusion channel, and improve the success rate of rescue.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a structural representation of the utility model.

Fig. 2 is an exploded view of the utility model.

In the figure 1. Handle 2. Drill 3. Sleeve 4. Stylet 5. Plastic base 6. Infusion standard screw interface

Detailed ways

In the figure, the utility model includes a handle 1 and a drill bit 2, and the drill bit 2 is a trocar structure, including a sleeve tube 3 and a stylet 4. The sleeve 3 is a hollow structure, and the stylet 4 is a solid body, which is located in the cavity of the sleeve 3. The needle tip of the stylet 4 passes through the sleeve 3, and the tip of the sleeve 3 is closely connected with the tip of the sleeve to form a square shape. A solid drill bit 2, the non-tip end of the stylet needle 4 is connected to the handle 1, and the non-tip end of the sleeve 3 has a plastic base 5 with a standard infusion screw interface 6, which is tightly connected with the handle 1. The outer diameter of the sleeve 3 is 1.8mm, the inner diameter is 1.5mm, and the length L of the square solid drill bit 2 protruding from the base is 20-30mm. The optimal length of the quadrangular drill protruding from the base is 25mm, and the casing 3 and the stylet 4 are made of high-strength toughness alloy material. When in use, find the puncture site, select the puncture site one centimeter inside the tibial nodule, align the tip of the drill bit 2 of the present utility model with the puncture site, alternately rotate clockwise and counterclockwise to puncture, and wait until the drill bit 2 enters the bone marrow through the periosteum There will be a feeling of falling behind the cavity, at this time stop the needle insertion immediately, then separate the stylet 4 of the drill bit from the cannula 3, take out the stylet 4, and connect the infusion set or syringe to the standard infusion screw interface 6 of the cannula , the liquid and medicine can be injected into the patient's body, and the infusion channel is established.

Claims (7)

1. A manual intraosseous cavity infusion device, characterized in that: it includes a handle and a drill bit, the drill bit is a trocar structure, including a cannula and a stylet, the cannula is a hollow structure, and the stylet is a solid body , located in the cavity of the casing, the needle tip of the stylet pierces through the tip of the casing and closely connects with the tip of the casing to form a four-sided solid drill bit. 2. A manual intraosseous cavity infusion device according to claim 1, characterized in that: the non-needle tip end of the stylet is connected to the handle. 3. A manual intraosseous cavity infusion device according to claim 1, characterized in that: the non-needle tip end of the cannula has a plastic base with a standard spiral interface for infusion, which is closely connected with the handle. 4. A manual intraosseous cavity infusion device according to claim 1, characterized in that: the outer diameter of the cannula is 1.8 mm, and the inner diameter is 1.5 mm. 5. A manual intraosseous cavity transfusion device according to claim 1, characterized in that the length (L) of the four-sided solid drill protruding from the base is 20-30 mm. 6. A manual intraosseous cavity transfusion device according to claim 1, characterized in that the length (L) of the four-edged drill protruding from the base is 25 mm. 7. A manual intraosseous cavity transfusion device according to claim 1, characterized in that: said cannula and stylet are made of high-strength and tough alloy material.

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