A powder spraying device for medical hemostatic powder

Abstract

The application discloses a medical hemostatic powder spraying device and relates to the technical field of medical hemostatic powder, which is characterized in that the device comprises a quantitative powder discharging assembly arranged in the interior of a shell and used for quantitatively discharging powder, a quantitative gas feeding assembly arranged in the interior of the shell and used for quantitatively feeding gas, and a linkage assembly arranged between the quantitative powder discharging assembly and the quantitative gas feeding assembly and used for controlling the quantitative powder discharging assembly and the quantitative gas feeding assembly to work cooperatively. The quantitative powder discharging assembly can quantitatively discharge the hemostatic powder, so that the powder discharging amount can be accurately controlled. The quantitative gas feeding assembly can quantitatively feed gas, so that the gas discharging amount is controlled, and the airflow for spraying the powder is more uniform. The quantitative powder discharging assembly and the quantitative gas feeding assembly work cooperatively, so that the accurate powder discharging amount is uniformly blown out, and the spreading of the hemostatic powder is more uniform and efficient.

Description

Technical Field

[0001] This invention relates to the field of medical hemostatic powder technology, and more specifically to a powder spraying device for medical hemostatic powder. Background Technology

[0002] Medical hemostatic powder is a powdered emergency treatment used to stop bleeding from a patient's wound. It is highly effective and rapid. During medical surgery, patients' wounds often face the risk of massive bleeding. In such cases, a common approach is to apply hemostatic powder to the bleeding point, where it coagulates with the blood to stop the bleeding. However, because hemostatic powder is a powder, it is often applied using a spray bottle. Existing spray bottles can cause uneven powder distribution and concentrated spraying force, resulting in powder not spreading properly and splashing back onto the wound. This reduces the effectiveness of the hemostatic powder and also contaminates the surgical environment.

[0003] Therefore, based on this, a design or technical improvement is proposed to solve the above-mentioned problems.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a powder spraying device for medical hemostatic powder.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A powder spraying device for medical hemostatic powder includes a housing, with an air delivery nozzle disposed at the lower end of the housing, and further includes:

[0008] A metering powder dispensing component, located inside the housing, is used for metering powder dispensing;

[0009] A metering gas delivery component, located inside the housing, is used for metering gas delivery;

[0010] The linkage component is located between the metering powder dispensing component and the metering air supply component, and is used to control the metering powder dispensing component and the metering air supply component to work together.

[0011] Preferably, the quantitative powder dispensing component includes a dispensing compartment, the interior of which, from top to bottom, is provided with a powder storage compartment for storing hemostatic powder, a transition compartment for dispensing a single quantitative amount of hemostatic powder, and a powder dispensing compartment for dispensing hemostatic powder and communicating with an air delivery nozzle.

[0012] When the passage between the transition chamber and the powder storage chamber is fully open, the passage between the transition chamber and the powder outlet chamber is fully closed, and the passage between the powder outlet chamber and the air delivery nozzle is fully open.

[0013] When the channel between the transition chamber and the powder storage chamber is completely closed, the channel between the transition chamber and the powder outlet chamber is completely open, and the channel between the powder outlet chamber and the air delivery nozzle is completely closed.

[0014] Preferably, the powder outlet chamber is provided with a movable end cap that can abut and seal the openings on its upper and lower sides, the inner wall of the dispensing chamber is provided with a plate that cooperates with the movable end cap, the movable end cap is provided with a linkage plate, and the linkage plate is connected to an opening and closing plate hinged inside the powder storage chamber via a connecting rod.

[0015] Preferably, the metering gas delivery assembly includes a first cylinder connected to the gas delivery nozzle, a double-ended piston rod that slides in a sealed manner inside the first cylinder, and a drive assembly that drives the double-ended piston rod to move pistons inside the first cylinder.

[0016] Preferably, the drive assembly includes a drive motor disposed inside the housing and a limiting slide arm disposed on the double-ended piston rod and limited by its vertical movement. The drive motor is connected to an eccentric guide wheel via a drive shaft. An eccentric shaft is disposed on the eccentric guide wheel. The eccentric guide wheel is movably connected to a connecting rod structure disposed on the limiting slide arm via the eccentric shaft.

[0017] Preferably, the upper end of the first cylinder is provided with a one-way valve, the outer shell is provided with an air hole corresponding to the position of the one-way valve, and the inside of the air delivery nozzle is provided with a one-way valve plate.

[0018] Preferably, the linkage assembly includes a linkage arm with its two ends respectively disposed on the movable end cap and the double-ended piston rod so that the two move synchronously. The connection between the powder outlet chamber and the air delivery nozzle is also movably connected to a powder-dispersing impeller via a movable shaft. A gear is movably connected to the component chamber via a movable shaft. The gear and the movable shaft of the powder-dispersing impeller are driven by a belt sleeve. The linkage arm also includes a transmission arm disposed on the double-ended piston rod and meshing with the gear through a rack plate portion disposed at its upper end, and a driven frame disposed on the movable end cap and driven by abutting against the transmission arm.

[0019] Preferably, the driven frame includes a fixed block disposed on the movable end cap and slidably connected to the limiting grooves opened on both sides of the component compartment; a movable locking block slidably engaged with the limiting grooves disposed on the side of the fixed block away from the movable end cap; a movable locking arm constrained on the fixed block for reciprocating limiting sliding by a spring disposed between the movable locking block and the limiting grooves; and a movable locking frame constrained on the component compartment for reciprocating limiting sliding by the limiting locking block and the spring disposed on the component compartment. The movable locking arm abuts against a protrusion disposed on the transmission arm, and the upper side of its abutting end is an arc surface. The end of the movable locking arm away from the transmission arm abuts against a protrusion disposed on the movable locking frame. The upper side of the movable locking arm is also provided with a stop plate that slidably abuts against the movable locking frame. The lower end of the movable locking frame is provided with an arc surface that abuts against the fixed block.

[0020] Preferably, the quantitative gas delivery assembly further includes a second cylinder disposed at a position opposite to the upper end of the first cylinder and whose inner surface is sealed and slides with respect to the end of the double-ended piston rod away from the first cylinder. The upper end of the second cylinder is provided with a one-way air valve, and the second cylinder is connected to a blood pressure airbag through a ventilation hose.

[0021] Preferably, the blood-pressure airbag is provided with a fixing plate that is bonded and fixed to the patient's skin by adhesive patches on both sides.

[0022] Compared with existing technologies, the beneficial effects of this solution are as follows: the solution is equipped with a quantitative powder dispensing component that can deliver hemostatic powder in a quantitative manner, thereby accurately controlling the amount of powder dispensed. It is also equipped with a quantitative air delivery component that can deliver air in a quantitative manner, thereby controlling the amount of air dispensed and making the airflow of powder spraying more uniform. Through the coordinated operation of the quantitative powder dispensing component and the quantitative air delivery component, the precise amount of powder dispensed is evenly blown out, resulting in more uniform and efficient application of hemostatic powder.

[0023] The solution uses a powder-discharging impeller to further refine and quantify the hemostatic powder delivered by the quantitative powder dispensing component in a single operation. This results in more uniform powder delivery and avoids the problem of powder splashing from spot spraying and contaminating the surgical environment.

[0024] The solution utilizes a pressure balloon to apply pressure to the area around the patient's wound during the powder hemostasis process, thereby slowing blood flow and reducing the rate of bleeding. This prevents the hemostatic powder from being washed away by the blood before it can coagulate due to excessive bleeding, thus reducing the amount of hemostatic powder used and improving hemostasis efficiency. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

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

[0027] Figure 2 This is a bottom-view perspective view of the present invention;

[0028] Figure 3 This is the present invention. Figure 1 A three-dimensional schematic diagram of the inner and outer shell;

[0029] Figure 4 This is the present invention. Figure 3 A three-dimensional schematic diagram of the internal structure of the inner and outer shells;

[0030] Figure 5 This is the present invention. Figure 3 A three-dimensional cross-sectional view of the inner and outer shell;

[0031] Figure 6 This is the present invention. Figure 3 A three-dimensional schematic diagram of the internal structure of the outer shell;

[0032] Figure 7 This is the present invention. Figure 6 A three-dimensional schematic diagram of the medium-quantity powder dispensing component;

[0033] Figure 8 This is the present invention. Figure 7 Cross-sectional three-dimensional schematic diagram of the medium-weight compartment;

[0034] Figure 9 This is the present invention. Figure 7 A three-dimensional diagram of the interior of the medium-weight compartment;

[0035] Figure 10 This is the present invention. Figure 6 A three-dimensional schematic diagram of a medium-quantity gas delivery component;

[0036] Figure 11 This is the present invention. Figure 6 A 3D schematic diagram of the central linkage component;

[0037] Figure 12 This is the present invention. Figure 9 A three-dimensional schematic diagram of the driven frame;

[0038] Figure 13 This is the present invention. Figure 9 Exploded three-dimensional diagram of the driven frame;

[0039] Figure 14 This is the present invention. Figure 1A frontal three-dimensional view of the central fixing plate;

[0040] Figure 15 This is the present invention. Figure 1 A three-dimensional view of the central fixing plate from below;

[0041] Figure 16 This is the present invention. Figure 9 A schematic diagram of the movement of the movable locking arm and movable locking frame under the engaged state of the driven frame.

[0042] In the diagram: 1. Outer shell; 11. Air nozzle; 2. Quantitative powder dispensing assembly; 21. Dispensing bin; 22. Powder storage bin; 23. Transition bin; 24. Powder dispensing bin; 25. Movable end cap; 26. Linkage plate; 27. Opening and closing plate; 28. Powder-discharging impeller; 3. Quantitative air delivery assembly; 31. First cylinder; 32. One-way valve; 33. Double-headed piston rod; 34. Limiting slide arm; 35. Drive motor; 36. Eccentric guide wheel; 37. Second cylinder; 4. Linkage assembly; 41. Linkage arm; 42. Transmission arm; 43. Gear; 44. Driven frame; 45. Fixed block; 46. Movable locking arm; 47. Movable locking bracket; 51. Blood pressure airbag; 52. Fixed plate; 53. Adhesive sheet; 6. Movable locking block; 61. Limiting locking block; 62. Protruding plate; 63. Support plate; 64. Protrusion; 65. Limiting slide rod. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] like Figure 1-16 The device shown is a medical hemostatic powder spraying device, including a housing 1, with an air delivery nozzle 11 at the lower end of the housing 1, a metering powder dispensing component 2 disposed inside the housing 1 for metering powder dispensing, a metering air delivery component 3 disposed inside the housing 1 for metering air delivery, and a linkage component 4 disposed between the metering powder dispensing component 2 and the metering air delivery component 3 for controlling the coordinated operation of the metering powder dispensing component 2 and the metering air delivery component 3. The device dispenses a metered amount of hemostatic powder in a single operation through the metering powder dispensing component 2, and then delivers a metered amount of air in a single operation through the metering air delivery component 3, thereby using a metered airflow to blow a metered amount of hemostatic powder, so that the hemostatic powder can be evenly dispersed by a metered airflow in a single operation, thus facilitating the even spraying of hemostatic powder onto the patient's wound.

[0045] More specifically, the quantitative powder dispensing component 2 includes a dispensing chamber 21, and inside the dispensing chamber 21, from top to bottom, there is a powder storage chamber 22 for storing hemostatic powder, a transition chamber 23 for dispensing a quantitative amount of hemostatic powder at a time, and a powder dispensing chamber 24 for dispensing hemostatic powder and communicating with the air nozzle 11.

[0046] During the operation of the quantitative powder dispensing component 2, when the channel between the transition chamber 23 and the powder storage chamber 22 is fully open, the channel between the transition chamber 23 and the powder dispensing chamber 24 is fully closed, and the channel between the powder dispensing chamber 24 and the air supply nozzle 11 is fully open; when the channel between the transition chamber 23 and the powder storage chamber 22 is fully closed, the channel between the transition chamber 23 and the powder dispensing chamber 24 is fully open, and the channel between the powder dispensing chamber 24 and the air supply nozzle 11 is fully closed.

[0047] The device uses a powder storage chamber 22 to store hemostatic powder. Then, by opening the channel between the powder storage chamber 22 and the transition chamber 23, the channel between the transition chamber 23 and the powder dispensing chamber 24 is closed, allowing a certain amount of hemostatic powder to be temporarily stored inside the transition chamber 23. Next, the channel between the powder storage chamber 22 and the transition chamber 23 is closed, while the channel between the transition chamber 23 and the powder dispensing chamber 24 is opened, thus transporting the quantitatively stored hemostatic powder inside the transition chamber 23 to the powder dispensing chamber 24 for dispensing preparation. Then, the lower channel of the powder dispensing chamber 24 is opened, allowing the hemostatic powder to be dispensed from the quantitative powder dispensing component 2. During the dispensing process, the channel between the transition chamber 23 and the powder dispensing chamber 24 is closed again, and the channel between the powder storage chamber 22 and the transition chamber 23 is opened again, thus preparing for the storage of the next amount of hemostatic powder while dispensing the hemostatic powder, thereby achieving continuous quantitative powder dispensing.

[0048] Furthermore, the powder dispensing chamber 24 is internally equipped with a movable end cap 25 that can abut and seal its upper and lower openings. The inner wall of the dispensing chamber 21 is equipped with a plate that cooperates with the movable end cap 25. A linkage plate 26 is mounted on the movable end cap 25. The linkage plate 26 is connected via a connecting rod to an opening and closing plate 27 hinged inside the powder storage chamber 22. The movable end cap 25, by abutting against the plate between the upper and lower openings of the powder dispensing chamber 24, forms a closed channel. It can only close one side of the channel. The opening and closing plate 27 is used to close the channels between the powder storage chamber 22 and the transition chamber 2. The opening and closing of the channel between the three chambers is controlled. When the movable end cap 25 closes the channel between the transition chamber 23 and the powder outlet chamber 24, it can push the opening and closing plate 27 through the linkage plate 26, thereby causing the opening and closing plate 27 to rotate and open the channel between the powder storage chamber 22 and the transition chamber 23. At this time, the channel between the powder storage chamber 22 and the transition chamber 23 is opened, while the channel between the transition chamber 23 and the powder outlet chamber 24 is closed, and the channel between the powder outlet chamber 24 and the air delivery nozzle 11 is opened, thereby completing the continuous powder delivery and quantitative powder dispensing work.

[0049] More specifically, the metered air delivery assembly 3 includes a first cylinder 31 connected to the air delivery nozzle 11, a double-ended piston rod 33 that slides in a sealed manner inside the first cylinder 31, and a drive assembly that drives the double-ended piston rod 33 to perform piston movement inside the first cylinder 31. The drive assembly drives the double-ended piston rod 33 to perform reciprocating piston movement inside the first cylinder 31, thereby completing the precise metered air delivery work.

[0050] Furthermore, the drive assembly includes a drive motor 35 disposed inside the housing 1 and a limiting slide arm 34 disposed on the double-headed piston rod 33 and limited by its vertical movement. The drive motor 35 is connected to an eccentric guide wheel 36 via a drive shaft. An eccentric shaft is disposed on the eccentric guide wheel 36. The eccentric guide wheel 36 is movably connected to a connecting rod structure disposed on the limiting slide arm 34 via the eccentric shaft. After the drive motor 35 is started, it drives the eccentric guide wheel 36 to rotate via the drive shaft. The eccentric shaft on the eccentric guide wheel 36 drives the connecting rod to perform cyclical movements in the vertical and horizontal directions. By limiting the limiting slide arm 34, it can only perform vertical movements. Thus, during the rotation of the eccentric guide wheel 36, it can drive the limiting slide arm 34 to perform reciprocating vertical movements, thereby driving the double-headed piston rod 33 to perform reciprocating piston movements.

[0051] Furthermore, a one-way valve 32 is provided at the upper end of the first cylinder 31, and an air hole is provided in the outer shell 1 at the position corresponding to the one-way valve 32. A one-way valve plate is provided inside the air delivery nozzle 11. By providing a one-way valve plate inside the air delivery nozzle 11, the gas at the air port position of the air delivery nozzle 11 is prevented from being drawn in during the air extraction process of the double-ended piston rod 33, thereby avoiding airflow disturbance to the delivered hemostatic powder.

[0052] More specifically, the linkage assembly 4 includes a linkage arm 41 with its two ends respectively mounted on the movable end cap 25 and the double-ended piston rod 33, enabling them to move synchronously. A powder-discharging impeller 28 is movably connected to the connection between the powder outlet chamber 24 and the air delivery nozzle 11 via a movable shaft. A gear 43 is movably connected to the component chamber 21 via a movable shaft. The movable shafts of the gear 43 and the powder-discharging impeller 28 are driven by a belt coupling. The linkage arm 41 also includes a transmission arm mounted on the double-ended piston rod 33 and meshing with the gear 43 via a rack plate portion mounted on its upper end. The rod 42 and the driven frame 44, which are mounted on the movable end cap 25 and drive the transmission arm 42 through abutment, drive the transmission arm 42 to drive the movable end cap 25 during the process of the double-headed piston rod 33 driving the transmission arm 42 to drive the gear 43 through the rack, thereby driving the powder-dispersing impeller 28 to rotate. Thus, during the process of dispensing powder in the metered powder dispensing component 2, the metered hemostatic powder is dispersed in a secondary manner, making the dispensed hemostatic powder more uniform and easier to spread when blown by the airflow.

[0053] Furthermore, the driven frame 44 includes a fixed block 45 mounted on the movable end cap 25 and slidably connected to the limiting grooves on both sides of the component compartment 21; a movable locking block 6 slidably engaged with the limiting grooves on the side of the fixed block 45 away from the movable end cap 25; a movable locking arm 46, which is limited to the fixed block 45 for reciprocating limited sliding by a spring mounted between the movable locking block 6 and the limiting grooves; and a movable locking frame 47, which is limited to the component compartment 21 for reciprocating limited sliding by the limiting locking block 61 and the spring mounted on the component compartment 21. A limiting sliding rod 65 for further sliding stabilization is also slidably connected to the movable locking frame 47. The movable locking arm 46 abuts against the protrusion 62 mounted on the transmission arm 42, and the upper side of its abutting end is arc-shaped. On the side, the end of the movable clamping arm 46 away from the transmission arm 42 is movably abutted against the protrusion 64 provided on the movable clamping frame 47. The upper side of the movable clamping arm 46 is also provided with a stop plate 63 that slides against the movable clamping frame 47. The lower end of the movable clamping frame 47 is provided with an arc surface that can abut against the fixed block 45. During the process of the transmission arm 42 driving the movable end cap 25 to move upward, the movable end cap 25 will block the channel between the transition chamber 23 and the powder storage chamber 22, thereby allowing the hemostatic powder to be stored inside the transition chamber 23. At the same time, the hemostatic powder inside the powder dispensing chamber 24 is sent out to the quantitative powder dispensing component 2. During the dispensing process, in order to ensure that the dispensing hemostatic powder is completely purged, the duration of air supply needs to be longer than the powder dispensing time to ensure long-term During the continuous airflow, the transmission arm 42 abuts against the lower end of the movable clamping arm 46, causing the fixed block 45 to move upward, which in turn causes the movable end cap 25 to move upward. When the fixed block 45 moves upward a certain distance, it abuts against the lower arc surface of the movable clamping bracket 47. At the same time, the movable clamping bracket 47 abuts against the upper end plate 63 of the movable clamping arm 46. Thus, when the fixed block 45 abuts against the movable clamping bracket 47 and moves laterally, the movable clamping bracket 47 abuts against the plate 63 on the movable clamping arm 46 and slides laterally. This causes the movable clamping arm 46 and the protrusion 62 of the transmission arm 42 to misalign. After the movable end cap 25 abuts against the upper channel, the transmission arm 42 can still slide upward, thereby driving the dust agitation. The impeller 28 rotates continuously to disperse the hemostatic powder. Simultaneously, the movable clamp 47, after being misaligned with the fixed block 45, can reset and lock the fixed block 45 in place, thus maintaining the continuous sealing of the channel by the movable end cap 25. Next, the transmission arm 42 moves downwards. During this downward movement, it indicates that the first cylinder 31 is supplying air to the air delivery nozzle 11. At this time, the transmission arm 42 drives the gear 43 to reverse, causing the powder-dispersing impeller 28 to reverse and completely scatter the remaining hemostatic powder at its upper end. Simultaneously, a continuous airflow is generated inside the air delivery nozzle 11, continuously blowing the hemostatic powder delivered inside the nozzle 11. As the transmission arm 42 moves downwards, its protruding plate 62 abuts against the upper arc surface of the movable clamp arm 46.This, in turn, pushes the movable clamping arm 46 to move laterally, causing it to abut against the protrusion 64 on the movable clamping bracket 47. This causes the movable clamping bracket 47 to slide laterally, resulting in a misalignment between its lower end and the fixed block 45. Consequently, the fixed block 45 falls under gravity, sealing the lower channel with the movable end cap 25. When the double-ended piston rod 33 reaches its lowest point, the airflow completely removes the hemostatic powder, and the protrusion 62 of the transmission arm 42 returns to the lower position of the movable clamping arm 46, thus continuing the powder spraying operation for the next cycle.

[0054] Furthermore, the quantitative air delivery assembly 3 also includes a second cylinder 37 located at the upper end of the first cylinder 31 and whose inner surface is sealed and slides away from the end of the double-ended piston rod 33 away from the first cylinder 31. The upper end of the second cylinder 37 is provided with a one-way air valve 32. The second cylinder 37 is connected to a blood-pressure airbag 51 through an air hose. With the blood-pressure airbag 51 in place, it can be placed around the patient's wound during powder spraying. Then, during the powder spraying process, the upward movement of the double-ended piston rod 33 inflates the inside of the blood-pressure airbag 51, thereby applying pressure to the area around the patient's wound. This slows down blood flow during the spraying of hemostatic powder, thereby reducing bleeding and enabling more efficient hemostasis.

[0055] Furthermore, the compression airbag 51 is provided with a fixing plate 52 that is bonded and fixed to the patient's skin by adhesive pieces 53 on both sides. The adhesive pieces 53 are used to bond and fix the airbag to the patient's skin surface. The fixing plate 52 is used to press and fix the upper end of the compression airbag 51, so that it will not expand upward during inflation, thereby better applying pressure to the patient's body parts.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A powder spraying device for medical hemostatic powder, comprising a housing (1), wherein an air delivery nozzle (11) is provided at the lower end of the housing (1), characterized in that: include: A quantitative powder dispensing component (2) is disposed inside the outer casing (1) for quantitative powder dispensing; A metered gas delivery component (3) is disposed inside the housing (1) for metered gas delivery; The linkage component (4) is set between the quantitative powder dispensing component (2) and the quantitative air supply component (3) to control the quantitative powder dispensing component (2) and the quantitative air supply component (3) to work together. The quantitative powder dispensing component (2) includes a dispensing chamber (21). The dispensing chamber (21) is provided from top to bottom with a powder storage chamber (22) for storing hemostatic powder, a transition chamber (23) for dispensing a quantitative amount of hemostatic powder at a time, and a powder dispensing chamber (24) for dispensing hemostatic powder and communicating with the air nozzle (11). When the passage between the transition chamber (23) and the powder storage chamber (22) is fully open, the passage between the transition chamber (23) and the powder outlet chamber (24) is fully closed, and the passage between the powder outlet chamber (24) and the air delivery nozzle (11) is fully open; When the channel between the transition chamber (23) and the powder storage chamber (22) is completely closed, the channel between the transition chamber (23) and the powder outlet chamber (24) is completely open, and the channel between the powder outlet chamber (24) and the air delivery nozzle (11) is completely closed; The powder outlet chamber (24) is provided with a movable end cap (25) that can abut and seal the openings on its upper and lower sides. The inner wall of the dispensing chamber (21) is provided with a plate that cooperates with the movable end cap (25). The movable end cap (25) is provided with a linkage plate (26). The linkage plate (26) is connected to an opening and closing plate (27) that is hinged inside the powder storage chamber (22) via a connecting rod. The metered gas delivery assembly (3) includes a first cylinder (31) connected to the gas delivery nozzle (11), a double-ended piston rod (33) that slides in a sealed manner inside the first cylinder (31), and a drive assembly that drives the double-ended piston rod (33) to perform piston movement inside the first cylinder (31). The drive assembly includes a drive motor (35) disposed inside the housing (1) and a limiting slide arm (34) disposed on the double-headed piston rod (33) and limited by its up-and-down movement. The drive motor (35) is connected to an eccentric guide wheel (36) via a drive shaft. An eccentric shaft is disposed on the eccentric guide wheel (36). The eccentric guide wheel (36) is movably connected to a connecting rod structure disposed on the limiting slide arm (34) via the eccentric shaft. The linkage assembly (4) includes a linkage arm (41) with its two ends respectively set on the movable end cap (25) and the double-headed piston rod (33) so that the two move synchronously. The powder outlet chamber (24) and the air supply nozzle (11) are connected by a powder-dispersing impeller (28) through a movable shaft. The component chamber (21) is connected by a gear (43) through a movable shaft. The movable shafts of the gear (43) and the powder-dispersing impeller (28) are driven by a belt sleeve. The linkage arm (41) also includes a transmission arm (42) set on the double-headed piston rod (33) and meshing with the gear (43) through the rack plate set at its upper end, and a driven frame (44) set on the movable end cap (25) and driven by abutting with the transmission arm (42).

2. The powder spraying device for medical hemostatic powder according to claim 1, characterized in that: The upper end of the first cylinder (31) is provided with a one-way valve (32), the outer shell (1) is provided with an air hole corresponding to the position of the one-way valve (32), and the inside of the air delivery nozzle (11) is provided with a one-way valve plate.

3. The powder spraying device for medical hemostatic powder according to claim 1, characterized in that: The driven frame (44) includes a fixed block (45) disposed on the movable end cap (25) and slidably connected to the limiting grooves opened on both sides of the component compartment (21); a movable locking block (6) slidably engaged between the limiting grooves disposed on the side of the fixed block (45) away from the movable end cap (25); a movable locking arm (46) limited to the fixed block (45) for reciprocating limiting sliding by a spring disposed between the movable locking block (6) and the limiting grooves; and a component compartment (21) limited to the component compartment (21) by the limiting locking block (61) disposed on the component compartment (21) and the spring. 1) The movable card holder (47) is reciprocating and limiting the sliding. The movable card arm (46) and the convex plate (62) provided on the transmission arm (42) abut against each other and the upper side of the abutting end is an arc surface. The end of the movable card arm (46) away from the transmission arm (42) abuts against the convex block (64) provided on the movable card holder (47). The upper side of the movable card arm (46) is also provided with a stop plate (63) that slides against the movable card holder (47). The lower end of the movable card holder (47) is provided with an arc surface that can abut against the fixed block (45).

4. The powder spraying device for medical hemostatic powder according to claim 3, characterized in that: The quantitative gas delivery assembly (3) further includes a second cylinder (37) located at the upper end of the first cylinder (31) and whose inner surface is sealed and slides away from the end of the double-ended piston rod (33) away from the first cylinder (31). The upper end of the second cylinder (37) is provided with a one-way valve (32), and the second cylinder (37) is connected to a blood pressure bag (51) through a ventilation hose.

5. The powder spraying device for medical hemostatic powder according to claim 4, characterized in that: The blood pressure airbag (51) is provided with a fixation plate (52) that is fixed to the patient's skin by adhesive patches (53) on both sides.

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