Chitosan hemostatic powder pusher

Abstract

The utility model relates to medical instrument technical field, specifically disclose a kind of chitosan hemostatic powder push-in device, comprising: sleeve, piston is slidably connected in sleeve interior, piston upper fixedly connected with telescopic push rod, telescopic push rod upper fixedly connected with handle, sleeve both sides are fixedly connected with finger grip handle;Hemostatic powder box, hemostatic powder box is located below sleeve;Box cover, box cover is located below hemostatic powder box;Replacement mechanism, replacement mechanism includes puncture needle and tin foil, tin foil is located on the upper end of hemostatic powder box, sleeve lower end is designed with helical thread connection structure, and detachable seal connection is formed by rotating and matched hemostatic powder box, and detachable seal structure meets heat expansion sealing ring, both realize quickly replace hemostatic powder box, and also can actively enhance sealing property under high temperature environment, prevent powder from damp, overall design gives consideration to aseptic operation, dosage control and extreme environment adaptability, significantly improve the hemostatic efficiency and safety under first-aid and surgical scene.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a chitosan hemostatic powder injector. Background Technology

[0002] Hemostatic powder, as a highly effective hemostatic agent, plays an important role in medical surgery and daily life. Its widespread application is attributed to its excellent coagulation efficacy and biocompatibility. This product exhibits strong adsorption properties for body fluids, achieving rapid hemostasis through a dual mechanism of action: First, its water-absorbing properties promote the rapid absorption of water from the blood, leading to a significant increase in platelet density, thereby accelerating the construction of the platelet aggregation network and enhancing its stability; second, the physical compression effect generated by the hemostatic powder after absorbing moisture and swelling can effectively compress blood vessels around the wound.

[0003] In modern medicine, hemostatic powder is often delivered to the required location using a push device. Traditional push devices are mostly designed for single use, and the entire device must be discarded after the hemostatic powder is used up, resulting in waste of materials such as plastic and metal. Furthermore, the long-term cost of use is relatively high. In addition, the device needs to be disassembled or manually poured when replenishing the hemostatic powder, which is complicated and can easily lead to powder spillage, increasing the risk of contamination. Therefore, we propose a chitosan hemostatic powder pusher. Utility Model Content

[0004] The purpose of this invention is to provide a chitosan hemostatic powder injector to solve the problems mentioned in the background art. Traditional injectors are mostly designed for single use, and the whole device needs to be discarded after the hemostatic powder is used up, which leads to the waste of materials such as plastic and metal. Furthermore, the long-term use cost is high, and the device needs to be disassembled or manually poured when replenishing the hemostatic powder, which is complicated and easily leads to powder spillage and increases the risk of contamination.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a chitosan hemostatic powder injector, comprising a cannula, a piston slidably connected inside the cannula, a telescopic push rod fixedly connected above the piston, a handle fixedly connected above the telescopic push rod, and finger grips fixedly connected to both sides of the cannula; a hemostatic powder box located below the cannula; a box cover located below the hemostatic powder box; and a replacement mechanism comprising a puncture needle and aluminum foil, the aluminum foil located at the upper end of the hemostatic powder box, and a spiral threaded connection structure designed at the lower end of the cannula, which forms a detachable sealed connection with the matching hemostatic powder box by rotation.

[0006] The lower end of the sleeve is provided with an air outlet, which is distributed in a honeycomb array to balance the air pressure. A silicone one-way valve is fixedly connected above the piston.

[0007] The puncture needle is located at the end of the cannula near the hemostatic powder box, and the puncture needle has a conical needle tip structure.

[0008] The aluminum foil is located on the upper surface of the hemostatic powder box, and the lower end of the hemostatic powder box has powder outlet holes, which are distributed in a honeycomb array.

[0009] The lid and the hemostatic powder box are connected by a snap fastener. A sealing ring is fixedly connected inside the lid. The sealing ring is made of a material that expands when heated, and automatically strengthens the seal when the temperature is abnormal.

[0010] The inner surface of the handle is equipped with an anti-slip pad, which has a textured surface to improve hand stability.

[0011] This utility model has at least the following beneficial effects: The chitosan hemostatic powder injector achieves rapid sealing assembly of the cannula and the hemostatic powder box through a spiral threaded connection structure. During operation, rotating the cannula causes the puncture needle to pierce the foil sealing layer at the top of the hemostatic powder box. Subsequently, the telescopic push rod drives the piston to compress the airflow, and the hemostatic powder is evenly diffused through the honeycomb-shaped powder outlet holes. At the same time, the silicone one-way valve can prevent the powder from flowing back. The honeycomb-shaped air outlet array balances the air pressure through multi-channel micropores to avoid powder clumping and blockage. Combined with the finger grip and the concave-convex anti-slip pads on the surface of the handle, a stable grip system is formed, ensuring that the injection action is accurate and controllable. Its advantages are reflected in: the detachable sealing structure combined with the heat-expanding sealing ring can not only achieve rapid replacement of the hemostatic powder box, but also actively enhance the sealing performance in high-temperature environments to prevent the powder from getting damp. The overall design takes into account aseptic operation, dosage control and extreme environment adaptability, significantly improving the hemostasis efficiency and safety in emergency and surgical scenarios. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a lower view of the structure of this utility model;

[0014] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point A.

[0015] In the diagram: 1. Sleeve; 11. Piston; 12. Telescopic push rod; 13. Handle; 14. Finger grip; 15. Vent; 16. Silicone one-way valve; 17. Anti-slip pad; 2. Replacement mechanism; 21. Hemostatic powder box; 22. Box lid; 23. Puncture needle; 24. Aluminum foil; 25. Powder outlet; 26. Sealing ring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3 This utility model provides a technical solution: a chitosan hemostatic powder injector, including a sleeve 1, a piston 11 slidably connected inside the sleeve 1, a telescopic push rod 12 fixedly connected above the piston 11, a handle 13 fixedly connected above the telescopic push rod 12, and finger grips 14 fixedly connected to both sides of the sleeve 1; a hemostatic powder box 21 located below the sleeve 1; a box cover 22 located below the hemostatic powder box 21; and a replacement mechanism 2, including a puncture needle 23 and aluminum foil 24, with the aluminum foil 24 located at the upper end of the hemostatic powder box 21. The lower end of the sleeve 1 is designed with a spiral threaded connection structure, which forms a detachable sealed connection with the matching hemostatic powder box 21 by rotation.

[0018] The lower end of the sleeve 1 is provided with an air outlet 15, which is distributed in a honeycomb array to balance the air pressure. A silicone one-way valve 16 is fixedly connected above the piston 11.

[0019] The puncture needle 23 is located at the end of the cannula 1 near the hemostatic powder box 21, and the puncture needle 23 has a conical needle tip structure.

[0020] Aluminum foil 24 is located on the upper surface of hemostatic powder box 21. Hemostatic powder box 21 has powder outlet holes 25 at the lower end, and the powder outlet holes 25 are distributed in a honeycomb array.

[0021] The lid 22 is connected to the hemostatic powder box 21 by a snap fastener. A sealing ring is fixedly connected inside the lid 22. The sealing ring is made of a material that expands when heated, and automatically strengthens the seal when the temperature is abnormal.

[0022] The inner surface of the handle 13 is provided with an anti-slip pad 17, which has a textured surface to improve hand stability.

[0023] The cannula 1 is made of transparent medical polymer material, with an internal sliding piston 11. The piston 11 is connected to the handle 13 via a telescopic push rod 12. The push rod has scale markings on its surface to quantify the dosage. The finger grips 14 on both sides of the cannula 1 have a streamlined concave design that fits the natural grip posture of the human hand. The inner surface is covered with a silicone anti-slip pad 17, whose textured surface can still provide stable friction even in a wet surgical glove environment. The lower end of the cannula 1 integrates a spiral threaded interface, which forms an airtight connection after being tightened with the matching thread on the upper end of the hemostatic powder box 21. The thread engagement depth has been optimized to ensure that assembly or disassembly can be completed with one hand.

[0024] The hemostatic powder box 21 is an independently sterile cylindrical cavity with an upper surface covered by a foil 24 sealing layer and a honeycomb array of powder outlet holes 25 at the lower end. The powder outlet holes 25 can balance the powder dispensing efficiency and powder uniformity. The box lid 22 is fixed to the box body by a snap-fit ​​mechanism and has a built-in heat-expanding sealing ring 26. When the ambient temperature is too high, the sealing ring 26 will expand to fill the connection gap and prevent the hemostatic powder from getting damp and deteriorating. The box body can be pre-filled with different specifications of chitosan hemostatic powder (such as 1g / 3g / 5g capacity), and the dosage can be adapted by changing the box body.

[0025] The lower end of the cannula 1 integrates a stainless steel puncture needle 23 with a tapered tip design. When piercing the tin foil 24, it creates a tiny incision rather than causing debris to fall off, avoiding the risk of foreign matter residue. The piston 11 head is fixed with a silicone one-way valve 16. The valve body closes the powder outlet 25 in its natural state to prevent powder from flowing back to the upper part of the cannula 1. The honeycomb-shaped air outlet 15 at the lower end of the cannula 1 balances the air pressure during the pushing process, and its structure can prevent powder from clogging the air passage.

[0026] This device can be applied in various fields, such as: in battlefield first aid, it is pre-loaded with rapid hemostatic chitosan powder and used with a detachable extension tube. Different length sleeves 1 can be connected through a threaded interface to meet the hemostasis needs of penetrating limb wounds or narrow areas such as the neck; in endoscopic surgery, the hemostatic powder box 21 can be replaced with a drug-carrying module, pre-loaded with anti-tumor drugs or biological glue, and targeted drug delivery can be achieved through a puncture needle 23. The honeycomb powder outlet array 25 can control the particle size of drug release, which is suitable for gastrointestinal bleeding or local chemotherapy of tumors; in burn care, the box is filled with chitosan-silver ion composite powder, and the powder is evenly sprayed onto the wound using a pusher. The silicone one-way valve 16 prevents backflow of body fluids and contamination of the powder, and the spiral interface can be connected to a spray assembly to achieve nebulized drug delivery.

[0027] The modular hemostatic powder box 21 and spiral sealing design enable quick replacement. Combined with a honeycomb pore array and air pressure balance system, it ensures uniform powder diffusion and precise dosage control, significantly improving the hemostasis efficiency of deep wounds. By changing the type of powder box, it is compatible with multiple scenarios such as antibacterial and bone repair, and has both emergency hemostasis and minimally invasive treatment capabilities. It breaks through the single-function limitations of traditional instruments and realizes the clinical value of "one device with multiple effects".

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chitosan hemostatic powder injector, comprising: A sleeve (1) is slidably connected to a piston (11) inside the sleeve (1). A telescopic push rod (12) is fixedly connected above the piston (11). A handle (13) is fixedly connected above the telescopic push rod (12). Finger grips (14) are fixedly connected to both sides of the sleeve (1). A hemostatic powder box (21) is located below the sleeve (1); A lid (22) is located below the hemostatic powder box (21); Its characteristic is that it further includes: The replacement mechanism (2) includes a puncture needle (23) and tin foil (24). The tin foil (24) is located at the upper end of the hemostatic powder box (21). The lower end of the sleeve (1) is designed with a spiral threaded connection structure, which forms a detachable sealed connection with the matching hemostatic powder box (21) by rotation.

2. The chitosan hemostatic powder injector according to claim 1, characterized in that: The lower end of the sleeve (1) is provided with an air outlet (15), which is distributed in a honeycomb array to balance the air pressure. A silicone one-way valve (16) is fixedly connected above the piston (11).

3. The chitosan hemostatic powder injector according to claim 2, characterized in that: The puncture needle (23) is located at one end of the cannula (1) near the hemostatic powder box (21), and the puncture needle (23) has a tapered needle tip structure.

4. The chitosan hemostatic powder injector according to claim 3, characterized in that: The tin foil (24) is located on the upper surface of the hemostatic powder box (21), and the lower end of the hemostatic powder box (21) is provided with a powder outlet hole (25), which is distributed in a honeycomb array.

5. The chitosan hemostatic powder injector according to claim 4, characterized in that: The lid (22) and the hemostatic powder box (21) are connected by a snap fastener. A sealing ring is fixedly connected inside the lid (22). The sealing ring is made of a material that expands when heated, and automatically strengthens the seal when the temperature is abnormal.

6. The chitosan hemostatic powder injector according to claim 5, characterized in that: The inner surface of the handle (13) is provided with an anti-slip pad (17), which has a textured surface to improve hand stability.

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