A thoracic intramedullary cavity syringe

Abstract

The present invention discloses a thoracic intramedullary injection syringe, comprising a limit clamp, a thoracic intramedullary puncture needle and a hand-drill type power handle; the first end of the thoracic intramedullary puncture needle is connected to the hand-drill type power handle, after the connection, the hand-drill type power handle can drive the thoracic intramedullary puncture needle to rotate; the limit clamp can be clamped on the second end of the thoracic intramedullary puncture needle; the thoracic intramedullary puncture needle comprises: a needle core part, a needle tube part, a fixer and a limiter; the hand-drill type power handle is provided with a power output port; the hand-drill type power handle is provided with a power assembly and a pressure trigger starting assembly, the power assembly can drive the connecting part to rotate, the pressure trigger starting assembly can receive the feedback pressure of the thoracic intramedullary puncture needle; the pressure trigger starting assembly can start / stop the power assembly. The thoracic intramedullary injection syringe designed by the present invention has a simple structure, is easy to operate, can safely, stably and effectively establish an intramedullary infusion channel, reduces the pain of patients, and improves the efficiency of first aid.

Description

Technical Field

[0001] The invention belongs to the field of medical emergency equipment, and in particular relates to a thoracic bone marrow cavity syringe. Background Art

[0002] When a critically ill patient goes into shock, it is difficult to establish an infusion channel through conventional peripheral vein puncture due to peripheral vein collapse, which seriously affects the rescue efficiency. At this time, an infusion channel can be established through a quick and effective bone marrow cavity puncture. In emergency medical treatment environments such as disaster relief or pre-hospital emergency care, the use of bone marrow cavity injection is not only safe, but also relatively fast, so that people can be treated in a very short time. At present, the commonly used bone marrow cavity puncture and infusion methods at home and abroad include ejection-type bone marrow cavity puncture and infusion of the tibia, humerus and sternum, and drilling-type bone marrow cavity puncture and infusion of the tibia and humerus.

[0003] At present, the common bone marrow puncture instruments on the market mainly include ejection type and drilling type. There are two types of ejection bone marrow puncture needles abroad, one is BIG, which is specially used for tibia and humerus puncture, and the other is FAST, which is specially used for sternum. The advantage is that it is convenient and fast to use, but the disadvantage is that the infusion speed is not as fast as the sternum, and the puncture success rate is not as good as the hand drill type. The puncture process relies on the spring ejection puncture needle into the bone marrow cavity. There is no pressure feedback during the process, and the user cannot control the puncture force.

[0004] The drilling-type intramedullary puncture needle is mainly the EZ-IO from abroad. The advantage of EZ-IO is that it can feel the pressure feedback when drilling into the bone at any time during the drilling process, so that the user can understand the degree of puncture, because there will be a drilling feeling after the puncture needle enters the intramedullary cavity. However, since it does not have sufficient safety measures, it cannot be used for sternal puncture.

[0005] The sternum area is rich in high-quality bone marrow, but due to the way it is used, there is currently no drilling-type puncture and infusion equipment that is easy to operate, has controllable puncture force, and is safe to use. Summary of the invention

[0006] The present invention provides a thoracic intramedullary injection syringe, comprising: a limit clamp, a thoracic intramedullary puncture needle and a hand drill type power handle;

[0007] The first end of the thoracic intramedullary puncture needle is connected to the hand drill type power handle, and after the connection, the hand drill type power handle can drive the thoracic intramedullary puncture needle to rotate;

[0008] The limiting clip can be clamped on the second end of the thoracic intramedullary puncture needle;

[0009] The thoracic intramedullary puncture needle comprises: a needle core piece, a needle tube piece, a fixer and a stopper;

[0010] The needle core piece is provided with a connecting piece at the first end, an outer conical joint at the second end, and a needle core at the center of the second end;

[0011] The needle tube assembly comprises a needle tube seat, a clamping seat and a needle tube;

[0012] The needle tube seat is provided with an inner conical joint, and the inner conical joint cooperates with the outer conical joint; the needle core piece and the needle tube piece can be connected through the outer conical joint and the inner conical joint;

[0013] The needle tube seat is fixedly connected to the holder, and the holder is provided with a first thread and a second thread;

[0014] The needle tube part is provided with a through hole, the needle tube is arranged in the through hole of the needle tube part, the needle tube is a hollow needle-like structure, the needle core of the needle core part can be inserted into the needle tube, and the direction of the needle tube needle is the same as the direction of the holder;

[0015] The fixture is provided with a through hole, and a first internal thread is provided in the through hole of the fixture, and the first internal thread cooperates with the first thread, so that the fixture can be fixed on the base;

[0016] The first end of the stopper is provided with a second internal thread interface, the second internal thread interface cooperates with the second thread, the stopper can be fixed to the holder through the second internal thread interface, the stopper is also provided with a through hole, the needle tube can be inserted into the through hole of the stopper;

[0017] The hand drill power handle is provided with a power output port, the power output port cooperates with the connecting piece, and the connecting piece can be inserted into the power output port;

[0018] A power assembly is disposed in the hand drill power handle, and the power assembly can drive the connecting member to rotate;

[0019] A pressure-triggered starting component is also provided in the hand drill power handle;

[0020] The pressure-triggered starting component can receive feedback pressure from the thoracic intramedullary puncture needle;

[0021] When the pressure is less than the first pressure value, the pressure-triggered starting component can stop the power component;

[0022] When the pressure is greater than or equal to the first pressure value, the pressure-triggered starting component can start the power component.

[0023] Further, the outer conical connector is a 6% Luer outer conical connector with a locking connector;

[0024] The internal cone connector is a 6% Luer internal cone connector with a locking connector.

[0025] Furthermore, the needle core length is greater than the needle tube length;

[0026] When the needle core piece is connected to the needle tube piece, the needle core needle tip of the needle core piece can pass through the needle tube.

[0027] Furthermore, when the needle core piece is connected to the needle tube piece, the needle core and the needle tube cooperate to form a triangular needle.

[0028] Furthermore, the hand drill power handle also includes a power switch, which is arranged on one side of the hand drill power handle housing; the power switch is used to turn on / off the hand drill power handle power assembly.

[0029] Furthermore, the hand drill power handle also includes a control component, and the control component can control the rotation speed and / or torque of the connecting member.

[0030] Furthermore, after the power switch is turned on, the pressure-triggered starting component only starts the power component once due to pressure triggering.

[0031] Furthermore, the hand drill power handle further comprises a power interface, and the power interface is arranged on one side of the housing of the hand drill power handle;

[0032] The power interface is used to supply power to the hand drill power handle after being connected to a power source.

[0033] Furthermore, the hand drill power handle further comprises a rechargeable battery, wherein the hand drill power handle is provided with a rechargeable battery, and the rechargeable battery is used to supply power to the hand drill power handle;

[0034] The power interface is also used to charge the rechargeable battery after connecting to a power source.

[0035] Furthermore, the limiting clamp has a thickness of 4-6 cm.

[0036] The thoracic intramedullary cavity syringe designed by the present invention has a simple structure and is easy to operate, and can safely, stably and effectively establish an intramedullary cavity infusion channel, thereby reducing the pain of patients and improving the efficiency of emergency treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of the structure of a thoracic bone marrow cavity injector according to an embodiment of the present invention is shown;

[0038] Figure 2 A schematic diagram of the structure of a thoracic intramedullary puncture needle according to an embodiment of the present invention is shown;

[0039] Figure 3A schematic diagram of the explosion of a thoracic intramedullary puncture needle according to an embodiment of the present invention is shown;

[0040] Figure 4 A schematic diagram of the needle core structure of an embodiment of the present invention is shown;

[0041] Figure 5 A schematic diagram of the needle tube structure of an embodiment of the present invention is shown;

[0042] Figure 6 A schematic diagram of the structure of a fixture according to an embodiment of the present invention is shown;

[0043] Figure 7 A schematic diagram of the structure of a limiter according to an embodiment of the present invention is shown.

[0044] In the figure: 1. limit clamp; 2. thoracic intramedullary puncture needle; 21. needle core piece; 22. needle tube piece; 221. needle tube seat; 222. first thread; 223. second thread; 224. needle tube; 23. fixer; 24. limiter; 3. hand drill type power handle. DETAILED DESCRIPTION

[0045] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. The present invention is mainly used for thoracic intramedullary injection, and can also be used for intramedullary puncture injection of the humerus and tibia. The present invention provides a thoracic intramedullary injection syringe, which includes: a limit clamp 1, a thoracic intramedullary puncture needle 2 and a hand drill power handle 3. The first end of the thoracic intramedullary puncture needle 2 is connected to the hand drill power handle 3. After the connection, the hand drill power handle 3 can drive the thoracic intramedullary puncture needle 2 to rotate; the limit clamp 1 can be clamped on the second end of the thoracic intramedullary puncture needle 2.

[0046] For example, Figure 1 As shown, a thoracic intramedullary injection syringe designed by the present invention comprises a limit clamp 1, a thoracic intramedullary puncture needle 2 and a hand-drill-type power handle 3. The limit clamp 1 is used to control the puncture depth, the thoracic intramedullary puncture needle 2 is used for puncture and subsequent infusion, and the hand-drill-type power handle 3 is used to provide power to the thoracic intramedullary puncture needle 2. The first end of the thoracic intramedullary puncture needle 2 is connected to the hand-drill-type power handle 3, and after the connection, the hand-drill-type power handle 3 can drive the thoracic intramedullary puncture needle 2 to rotate; the limit clamp 1 can be clamped on the second end of the thoracic intramedullary puncture needle 2.

[0047] Specifically, the thoracic intramedullary puncture needle 2 includes: a needle core piece 21, a needle tube piece 22, a fixer 23 and a limiter 24; the first end of the needle core piece 21 is provided with a connector, the second end is provided with an outer conical joint, and the center of the second end is provided with a needle core; the needle tube piece 22 includes a needle tube seat 221, a holder and a needle tube 224; the needle tube seat 221 is provided with an inner conical joint, and the inner conical joint cooperates with the outer conical joint; the needle core piece 21 and the needle tube piece 22 can be connected through the inner conical joint and the outer conical joint; the needle tube seat 221 is fixedly connected to the holder, and the holder is provided with a first thread 222 and a second thread 223; the needle tube piece 22 is provided with a through hole, and the needle tube 224 is arranged on the needle tube piece 22 In the through hole, the needle tube 224 is a hollow needle-like structure, the needle core of the needle core piece 21 can be inserted into the needle tube 224, and the needle head direction of the needle tube 224 is the same as the direction of the base; the fixture 23 is provided with a through hole, and the fixture 23 is provided with a first internal thread in the through hole, the first internal thread cooperates with the first thread 222, and the fixture 23 can be fixed on the base; the first end of the stopper 24 is provided with a second internal thread interface, the second internal thread interface cooperates with the second thread 223, the stopper 24 can be fixed to the base through the second internal thread interface, the stopper 24 is also provided with a through hole, and the needle tube 224 can be inserted into the through hole of the stopper 24. The outer conical joint is a 6% Luer outer conical joint with a locking joint; the inner conical joint is a 6% Luer inner conical joint with a locking joint. The length of the needle core is greater than the length of the needle tube; when the needle core member 21 is connected to the needle tube member 22, the needle tip of the needle core can pass through the needle tube 224. When the needle core member 21 is connected to the needle tube member 22, the needle core and the needle tube 224 cooperate to form a triangular needle.

[0048] For example, Figure 2 As shown, Figure 2 This is a diagram showing the effect of the thoracic intramedullary puncture needle 2 after assembly. Figure 3 As shown, the thoracic intramedullary puncture needle 2 includes: a needle core 21, a needle tube 22, a fixer 23 and a stopper 24. Figure 4 As shown, the needle core member 21 is provided with a connecting member at the first end, an outer conical joint at the second end, and a needle core at the center of the second end. Figure 5As shown, the needle tube component 22 includes a needle tube seat 221, a holder and a needle tube 224. The needle tube seat 221 is provided with an inner conical joint, and the outer conical joint cooperates with the inner conical joint. The needle core component 21 and the needle tube component 22 can be connected through the outer conical joint and the inner conical joint. The thoracic intramedullary syringe designed by the present invention uses a 6% Luer conical joint with a locking joint. This joint is the most commonly used standard joint in medicine. After the needle core component 21 is removed from the needle tube component 22, a common medical instrument such as a syringe can be used to connect to the 6% Luer inner conical joint with a locking joint provided on the needle tube component 22. The needle tube seat 221 is fixedly connected to the holder, and the holder is provided with a first thread 222 and a second thread 223. The cross section where the first thread 222 is located is larger than the cross section where the second thread 223 is located. The following design can also be used, the first thread 222 and the second thread 223 have the same cross-section, but the device that matches the first thread 222 can be screwed on the second thread 223; while the device that matches the second thread 223 cannot be screwed on the first thread 222. The needle tube part 22 is provided with a through hole, and the needle tube 224 is arranged in the through hole of the needle tube part 22, and the needle tube 224 is a hollow needle-like structure. The needle tube seat 221 designed by the present invention has two design methods for the needle tube, one is that the needle tube seat 221, the socket and the needle tube 224 are integrally processed and formed, and the other is that after the needle tube seat 221 and the socket are processed, a through hole is set therein, and then the needle tube 224 is fixedly connected to the socket by welding or other means. The needle core of the needle core part 21 can be inserted into the needle tube 224, and the needle head direction of the needle tube 224 is the same as the direction of the socket. The length of the needle core is greater than the length of the needle tube; when the needle core member 21 is connected to the needle tube member 22, the needle tip of the needle core can pass through the needle tube 224. Figure 2 As shown, the needle core and the needle tube 224 cooperate to form a triangular needle, which is a form of puncture needle. This cooperation is more conducive to puncture. The fixture 23 is provided with a through hole, such as Figure 6 As shown, the fixing device 23 is provided with a first internal thread in the through hole, and the first internal thread cooperates with the first thread 222, so that the fixing device 23 can be fixed on the card seat. Figure 7 As shown, the first end is provided with a second internal thread interface, the second internal thread interface cooperates with the second thread 223, the stopper 24 can be fixed to the holder through the second internal thread interface, the stopper 24 is also provided with a through hole, the needle tube 224 can be inserted into the through hole of the stopper 24. The present invention uses two kinds of threads, so that after the stopper 24 is screwed to a certain place of the holder through the second thread 223, the fixer 23 is adjusted to make the fixer 23 close to the stopper 24, so that the stopper 24 will not rotate backwards after being subjected to pressure, thereby ensuring the precise position of the stopper 24.

[0049] Specifically, the limiting clamp 1 has a thickness of 4-6 cm.

[0050] Exemplarily, the thoracic bone marrow cavity syringe designed by the present invention uses a variety of safety control measures, one of which is to use a limit clamp 1 to limit the puncture depth. Before puncture, first clamp the limit clamp 1, then pierce the human body to the top of the sternum, the limit clamp 1 is close to the skin, and then the limiter 24 is adjusted to be close to the limit clamp 1. After adjustment, remove the limit clamp 1, so that the puncture depth can be guaranteed to be exactly the thickness of the limit clamp 1. In this way, the problem that the puncture depth is difficult to control when the present invention is applied to some people with a thicker fat layer can be eliminated. By studying the thickness data of the anterior cortex of the human bone marrow cavity in my country, the puncture depth can be determined, that is, 4-6cm. This thickness enables the present invention to puncture to the thoracic bone marrow cavity without further piercing the sternum. The present invention can also be applied to different populations in other countries, and the thickness of the limit clamp 1 should be designed according to the specific data of the thickness of the anterior cortex of the human bone marrow cavity in that country.

[0051] Specifically, the hand drill power handle 3 is provided with a power output port, the power output port cooperates with the connecting piece, and the connecting piece can be inserted into the power output port; the hand drill power handle 3 is provided with a power assembly, and the power assembly can drive the connecting piece to rotate; the hand drill power handle 3 also includes a power switch, and the power switch is arranged on one side of the housing of the hand drill power handle 3; the power switch is used to turn on / off the power assembly of the hand drill power handle 3. The hand drill power handle 3 also includes a control assembly, and the control assembly can control the rotation speed and / or torque of the connecting piece. The hand drill power handle 3 is also provided with a pressure trigger start assembly; the pressure trigger start assembly can receive the feedback pressure of the thoracic intramedullary puncture needle 2, and when the pressure is less than the first pressure value, the pressure trigger start assembly can stop the power assembly; when the pressure is greater than or equal to the first pressure value, the pressure trigger start assembly can start the power assembly. After turning on the power switch, the pressure trigger start assembly only starts the power assembly once due to pressure triggering.

[0052] Exemplarily, the hand drill power handle 3 is provided with a power output port, the power output port cooperates with the connecting piece, and the connecting piece can be inserted into the power output port; a power assembly is provided in the hand drill power handle 3, and the power assembly can drive the connecting piece to rotate. The hand drill power handle 3 also includes a power switch, which is arranged on one side of the housing of the hand drill power handle 3; the power switch is used to turn on / off the power assembly of the hand drill power handle 3. The hand drill power handle 3 also includes a control assembly, which can control the rotation speed and / or torque of the connecting piece, and it is easier to drill into different bones by adjusting the size of the rotation speed and / or setting different torques. Preferably, an adjustment switch is provided on the power switch, and the rotation speed and / or torque can also be adjusted by the power switch. A pressure-triggered start assembly is also provided in the hand drill power handle 3; the pressure-triggered start assembly can receive the feedback pressure of the thoracic intramedullary puncture needle 2, and when the pressure is less than the first pressure value, the pressure-triggered start assembly can stop the power assembly; when the pressure is greater than or equal to the first pressure value, the pressure-triggered start assembly can start the power assembly. The thoracic intramedullary injection syringe designed by the present invention has another case control means of a pressure-triggered starting component. A preset pressure starting threshold, i.e., a first pressure value, is set. When the received feedback pressure is greater than or equal to the first pressure value, the pressure-triggered starting component starts the power component to provide power to the thoracic intramedullary puncture needle 2. When the received feedback pressure is less than the first pressure value, the pressure-triggered starting component stops the power component, and the power component no longer provides power to the thoracic intramedullary puncture needle 2. When the thoracic intramedullary puncture needle 2 designed by the present invention pierces the muscle and does not encounter the sternum, the received feedback pressure is less than the first pressure value, and the thoracic intramedullary puncture needle 2 does not rotate at this time; when encountering the sternum, the received feedback pressure is greater than the first pressure value, the power component provides power to the thoracic intramedullary puncture needle 2, and the thoracic intramedullary puncture needle 2 starts to rotate; when the thoracic intramedullary puncture needle 2 drills into the intramedullary cavity, the received feedback pressure is less than the first pressure value, and the thoracic intramedullary puncture needle 2 stops rotating at this time. Since each time the power switch is turned on, the pressure-triggered starting component can only start the power component once due to pressure triggering, it will not drill again even if it drills to the bone wall on the other side of the thoracic medullary cavity, thus ensuring the safety of the entire thoracic medullary cavity puncture.

[0053] Specifically, the hand drill power handle 3 further includes a power interface, which is disposed on one side of the housing of the hand drill power handle 3; the power interface is used to connect to a power source and supply power to the hand drill power handle 3. The hand drill power handle 3 further includes a rechargeable battery, which is disposed inside the hand drill power handle 3 and is used to supply power to the hand drill power handle 3; the power interface is also used to charge the rechargeable battery after connecting to a power source.

[0054] Exemplarily, the thoracic intramedullary injector designed by the present invention can be directly powered by connecting to a power source, and the hand drill power handle 3 also includes a power interface, which is arranged on one side of the housing of the hand drill power handle 3; the power interface is used to power the hand drill power handle 3 after connecting to a power source. A built-in rechargeable battery can also be used for power supply, and the hand drill power handle 3 also includes a rechargeable battery, which is arranged inside the hand drill power handle 3, and the rechargeable battery is used to power the hand drill power handle 3; the power interface is also used to charge the rechargeable battery after connecting to a power source.

[0055] The sternum can be injected using the thoracic intramedullary injection syringe designed by the present invention in the following manner:

[0056] 1. According to the population in different countries, select the limit clip 1 of different thicknesses, and clamp the limit clip 1 on the thoracic intramedullary puncture needle 2;

[0057] 2. Insert the thoracic intramedullary syringe into the human body until it reaches the sternum, with the limit clip 1 close to the skin. Adjust the limiter 24 to be close to the limit clip 1, and then adjust the fixer 23 to be close to the limiter 24. After adjustment, remove the limit clip. This ensures that the puncture depth is exactly the thickness of the limit clip. This can eliminate the problem of poor control of the puncture depth when used on people with thick fat layers.

[0058] 3. Turn on the power switch, press down the thoracic bone marrow cavity syringe, the pressure triggers the starting component to start the power component, and rotates the thoracic bone marrow cavity puncture needle 2 to puncture the sternum;

[0059] 4. The thoracic intramedullary puncture needle 2 penetrates the sternum and reaches the intramedullary cavity, and the pressure-triggered starting component stops the power component, and the thoracic intramedullary puncture needle 2 no longer rotates. Due to the setting of the pressure-triggered starting component, the thoracic intramedullary puncture needle 2 will not start the power component again when it drills into the bone wall on the other side of the sternum;

[0060] 5. Remove the needle core member 21 and use the 6% Luer inner cone connector of the needle tube member 22 to perform medical procedures such as injection.

[0061] The thoracic intramedullary cavity syringe designed by the present invention has a simple structure and is easy to operate, and can safely, stably and effectively establish an intramedullary cavity infusion channel, thereby reducing the pain of patients and improving the efficiency of emergency treatment.

[0062] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A thoracic intramedullary injection syringe, characterized in that: The thoracic intramedullary injection syringe comprises: a limit clamp (1), a thoracic intramedullary puncture needle (2) and a hand drill-type power handle (3); The first end of the thoracic intramedullary puncture needle (2) is connected to the hand drill type power handle (3), and after the connection, the hand drill type power handle (3) can drive the thoracic intramedullary puncture needle (2) to rotate; The limiting clamp (1) can be clamped on the second end of the thoracic intramedullary puncture needle (2); The thoracic intramedullary puncture needle (2) comprises: a needle core component (21), a needle tube component (22), a fixer (23) and a stopper (24); The needle core piece (21) is provided with a connecting piece at the first end, an outer conical joint at the second end, and a needle core at the center of the second end; The needle tube component (22) comprises a needle tube seat (221), a clamping seat and a needle tube (224); The needle tube seat (221) is provided with an inner conical joint, and the inner conical joint cooperates with the outer conical joint; the needle core piece (21) and the needle tube piece (22) can be connected via the outer conical joint and the inner conical joint; The needle tube seat (221) is fixedly connected to the holder, and the holder is provided with a first thread (222) and a second thread (223); The needle tube component (22) is provided with a through hole, the needle tube (224) is arranged in the through hole of the needle tube component (22), the needle tube (224) is a hollow needle-shaped structure, the needle core of the needle core component (21) can be inserted into the needle tube (224), and the direction of the needle head of the needle tube (224) is the same as the direction of the holder; The fixer (23) is provided with a through hole, a first internal thread is provided in the through hole of the fixer (23), the first internal thread cooperates with the first thread (222), and the fixer (23) can be fixed on the holder; The first end of the stopper (24) is provided with a second internal thread interface, the second internal thread interface cooperates with the second thread (223), the stopper (24) can be fixed to the holder through the second internal thread interface, the stopper (24) is also provided with a through hole, the needle tube (224) can be inserted into the through hole of the stopper (24); The hand drill power handle (3) is provided with a power output port, the power output port cooperates with the connecting piece, and the connecting piece can be inserted into the power output port; A power assembly is arranged inside the hand drill power handle (3), and the power assembly can drive the connecting member to rotate; A pressure-triggered starting component is also provided in the hand drill power handle (3); The pressure-triggered starting component is capable of receiving feedback pressure from a thoracic intramedullary puncture needle (2); When the pressure is less than the first pressure value, the pressure-triggered starting component can stop the power component; When the pressure is greater than or equal to the first pressure value, the pressure-triggered starting component can start the power component; The external conical connector is a 6% Luer external conical connector with a locking connector; The internal conical connector is a 6% Luer internal conical connector with a locking connector; The needle core length is greater than the needle tube length; When the needle core piece (21) is connected to the needle tube piece (22), the needle core needle tip of the needle core piece (21) can pass through the needle tube (224).

2. The thoracic intramedullary injection syringe according to claim 1, characterized in that: When the needle core piece (21) is connected to the needle tube piece (22), the needle core and the needle tube (224) cooperate to form a triangular needle.

3. The thoracic intramedullary injection syringe according to claim 1, characterized in that: The hand drill power handle (3) further comprises a power switch, which is arranged on one side of the housing of the hand drill power handle (3); the power switch is used to turn on / off the power component of the hand drill power handle (3).

4. The thoracic intramedullary injection syringe according to claim 3, characterized in that: The hand drill power handle (3) further comprises a control component, wherein the control component is capable of controlling the rotation speed and / or torque of the connecting member.

5. The thoracic intramedullary injection device according to claim 3 or 4, characterized in that: After the power switch is turned on, the pressure-triggered starting component only starts the power component once due to pressure triggering.

6. The thoracic intramedullary injection syringe according to claim 5, characterized in that: The hand drill power handle (3) further comprises a power interface, wherein the power interface is arranged on one side of the housing of the hand drill power handle (3); The power interface is used to supply power to the hand drill power handle (3) after being connected to a power source.

7. The thoracic intramedullary injection syringe according to claim 6, characterized in that: The hand drill power handle (3) further comprises a rechargeable battery. The hand drill power handle (3) is provided with a rechargeable battery, and the rechargeable battery is used to supply power to the hand drill power handle (3); The power interface is also used to charge the rechargeable battery after connecting to a power source.

8. The thoracic intramedullary injection syringe according to claim 1, characterized in that: The thickness of the limiting clamp (1) is 4-6 cm.

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