A device for pushing granular hemostatic agent into deeper wounds

Abstract

The present invention discloses a device for pushing a granular hemostatic agent to a deeper wound, comprising a cylindrical outer cylinder, the front end of which is closed and the rear end is open, and the inner cylinder is provided inside the outer cylinder, the outer diameter of the inner cylinder is consistent with the inner diameter of the outer cylinder, the two cooperate with each other and can slide relatively, and the inner cavity of the cylinder is a hemostatic agent accommodating space; the two ends of the inner cylinder are open. The front end of the outer cylinder is a conical design, and is cut or injection molded into a plurality of fan-shaped petals, each petal is connected by a thin wall or seamlessly, and when an axial force is applied to the inner cylinder, the petals on the outer cylinder are forced to be in an open state. The blockage at the rear end of the inner cylinder is removed, and the push rod is inserted into the inner cylinder to apply pressure to quickly push out the hemostatic agent in the cylinder. The discharge end of the cylinder of the present invention is easier to open to ensure smooth push injection of the hemostatic agent and to maximize the full effect of the hemostatic agent.

Description

Technical Field

[0001] The invention relates to a medical device, in particular to a device for pushing a granular hemostatic agent to a deeper wound, belonging to the technical field of medical emergency. Background Art

[0002] If the wound is not treated quickly or correctly when the human body is injured externally, heavy bleeding may occur, and even fatal danger may occur. Military data show that about 50% of combat casualties in armed conflicts are caused by blood loss, and most people die within thirty minutes after being injured, of which about 60% die within the first five minutes. Gunshot wounds are relatively common external traumas in armed conflicts. The wounds are deep and the bleeding rate is fast, so timely hemostasis of the wounds can greatly reduce casualties. Because gunshot and stabbing wounds are special, the wounds on the surface are less and have a certain depth. Conventional external hemostatic materials cannot penetrate deep into the wound, so a hemostatic technology that can be directly inserted and contact the bleeding point is needed.

[0003] For example, the utility model patent with publication number CN 205924682 U, publication date February 8, 2017, and titled "A barrel-type hemostatic device" discloses a technical means that can enter the bleeding point for hemostasis, which includes a cylindrical barrel, the barrel rear end of the barrel is open, the barrel front end of the barrel is a discharge end, the discharge end includes a circular bottom plate, the bottom plate is seamlessly connected to the barrel or integrally formed around the bottom plate, the bottom plate includes a plurality of fan-shaped petals, and adjacent petals are connected by a plurality of connection points or connected by thin walls or seamlessly spliced. The barrel-type hemostatic device provided by the utility model can be made into different lengths and different diameters, can be inserted into wounds or incisions of different diameters, and the hemostatic agent can be pushed into a relatively deep bleeding position in time without the need to expand the wound through surgery.

[0004] For example, the invention patent application with publication number CN 108888843 A and titled "Powder hemostatic agent propeller for human cavity wounds" discloses a powder hemostatic agent propeller for human cavity wounds, including a cylinder and a propulsion assembly, the cylinder including a connected cylindrical section and a piercing section, the piercing section gradually decreasing in radial dimension from one end connected to the cylindrical section to the end away from the cylindrical section; in the injection state, the powder hemostatic agent in the cylinder is squeezed out from the piercing section by the pressure of the piston head.

[0005] The shortcomings of the above-mentioned prior art are: first, the cylinder of the device in the prior art is a single-layer design, and the front end valve body of the device relies on the power transmitted by the hemostat to open. This opening method causes the hemostat to be squeezed and compressed, destroying the original shape of the hemostat, so that the hemostat cannot fully contact with the blood, affecting the liquid absorption performance of the hemostat, and further affecting the hemostatic effect; secondly, the conductive force provided by the hemostat is limited, and the front end valve body of the device cannot be fully opened, and the hemostat cannot be quickly pushed out, affecting the hemostatic effect; thirdly, as mentioned above, due to the limitation of the conductive force of the hemostat, in order to realize its push function, the prior art generally needs to set the gap between the valve bodies to be relatively wide. Although the hemostat can be barely pushed out, the wide gap between the valve bodies of the device leads to poor rigidity of the front end of the device, which is not easy to insert into the wound, and the wide gap between the valve bodies of the device causes blood to flow into the device during the placement of the device, causing the hemostat to adhere and gather at the opening, aggravating the problem of difficulty in pushing out, and failing to achieve the purpose of emergency treatment. Summary of the invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a device for pushing granular hemostatic agents into deeper wounds, wherein the discharge end of the cylinder is easier to open to ensure smooth injection of the hemostatic agent and maximize the full effect of the hemostatic agent.

[0007] The present invention provides the following technical solutions:

[0008] A device for pushing granular hemostatic agents into deeper wounds, comprising a cylindrical outer cylinder, the front end of which is closed and the rear end is open. The device is characterized in that an inner cylinder is arranged inside the outer cylinder, the outer diameter of the inner cylinder is consistent with the inner diameter of the outer cylinder, the two cooperate with each other and can slide relative to each other, and the inner cavity of the cylinder is a hemostatic agent accommodating space; both ends of the inner cylinder are open.

[0009] The present invention also includes a push rod, the outer diameter of the push rod is consistent with the inner diameter of the inner cylinder, the two are matched with each other and can slide relatively.

[0010] A plug is provided at the rear end of the inner cylinder, and the outer diameter of the plug is consistent with the inner diameter of the inner cylinder; the plug is used to seal the rear of the inner cylinder to prevent leakage of the hemostatic agent.

[0011] The plug is also provided with a pull ring, which is convenient for quickly removing the plug when in use.

[0012] The front end of the outer cylinder is conical in design, and is cut or molded into a plurality of fan-shaped petals, each of which is connected by a thin wall or seamlessly, and when an axial force is applied to the inner cylinder, the petals on the outer cylinder are forced to open. The plug at the rear end of the inner cylinder is removed, and the push rod is inserted into the inner cylinder to apply pressure to quickly push out the hemostatic agent in the cylinder.

[0013] The number of the plurality of petals is ≥3.

[0014] A water drop-shaped opening is provided at the end of the petal body, so that the petal body is easier to open.

[0015] The outer layer cylinder, the inner layer cylinder and the rear end of the injection rod are all provided with a card holder, which is convenient for holding and provides a fulcrum, and is convenient for use.

[0016] The inner cylinder is provided with a limiting protrusion for limiting position.

[0017] A movable limiting assembly clamp is provided on the outer wall of the inner cylinder to fix the relative distance between the inner and outer cylinders to prevent the inner cylinder from moving during transportation and damaging the sealing of the front valve body.

[0018] The limiting assembly clamp includes an inner cylinder limiting clamp on the inner side, which is used to fix the relative distance between the inner and outer cylinders, and an outer injection rod assembly clamp, which can be used to fix the injection rod.

[0019] The advantages of the present invention are:

[0020] (1) The front valve of the device relies on the power transmitted by the inner cylinder to open, which can provide sufficient power to quickly and fully open the valve. (2) The opening process of the valve of the device does not rely on the power transmitted by the hemostat, which avoids excessive force and extrusion of the hemostat, ensures the integrity of the shape of the hemostat, and ensures that the efficacy and performance of the hemostat are not impaired. (3) Since it can provide sufficient opening power, it allows the valves to be seamlessly connected or thin-walled, so that the front end of the device is in a sealed state before transportation and use, ensuring that the hemostat will not scatter before injection or come into contact with blood in advance, causing injection difficulties. 4) Since it can provide a sufficiently large opening force, it allows the petals to be seamlessly connected or thin-walled, or to use a material with better rigidity, so that the front end of the device of the present invention has better mechanical strength, which is conducive to penetrating narrow deep wounds; (5) In the expanded state, the inner cylinder not only provides support for the open petals and continuously ensures the wide opening size, but also better isolates the blood, ensuring that the loaded hemostatic agent reaches the deep wound surface directly. The injection process avoids contact with blood at the opening gap between the side wall petals, ensuring smooth injection and maximizing the full effect of the hemostatic agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the specific implementation modes of the present invention, the drawings required for use in the description of the specific implementation modes will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1This is a structural diagram of Example 1 of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the push rod of the present invention.

[0024] Figure 3 It is a cross-sectional schematic diagram of embodiment 1 of the present invention.

[0025] Figure 4 This is a schematic diagram of the discharging end of the present invention in an open state.

[0026] Figure 5 It is a schematic diagram of the process of pushing out the hemostatic agent of the present invention.

[0027] Figure 6 This is a schematic diagram of the overall structure of Example 2 of the present invention.

[0028] Figure 7 It is a schematic diagram of the limit assembly clamp structure of the present invention.

[0029] Figure 8 This is a schematic diagram of the structure of the outer cylinder of Example 3 of the present invention.

[0030] Fig. 9 This is a schematic diagram of the structure of Example 4 of the present invention.

[0031] Fig.10 This is a schematic diagram of the structure of Example 5 of the present invention.

[0032] Among them: 1 - outer cylinder, 1.1 - discharge end, 1.2 - petal body, 1.3 - outer cylinder holder, 1.4 - drop-shaped opening; 2 - inner cylinder, 2.1 - inner cylinder limiting protrusion, 2.2 - inner cylinder holder; 3 - injection rod, 3.1 - injection rod holder; 4 - plug, 4.1 - pull ring; 5 - hemostatic agent; 6 - limiting assembly clamp, 6.1 - inner cylinder limiting clamp, 6.2 - injection rod assembly clamp. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Embodiment 1:

[0035] like Figure 1 , Figure 2 As shown, it is a specific embodiment of the present invention, which includes an inner and outer double-layer cylindrical barrel (an outer barrel 1 and an inner barrel 2), an inner barrel plug 4, and an injection rod 3.

[0036] like Figure 3As shown, the inner diameter of the outer cylinder 1 is consistent with the outer diameter of the inner cylinder 2, and the two cooperate with each other. The inner cylinder 2 and the outer cylinder 1 can slide relative to each other, and a cavity is formed in the inner and outer cylinders, and the cavity is a space for accommodating the hemostatic agent 5. The front end of the outer cylinder 1 is closed and the rear end is open; both ends of the inner cylinder 2 are open; the rear end of the inner cylinder is provided with a plug 4, the outer diameter of the plug is consistent with the inner diameter of the inner cylinder, and is used to seal the hemostatic agent 5 in the cavity. The plug 4 is also provided with a pull ring 4.1, which is convenient for opening the plug 4 when in use.

[0037] like Figure 3 As shown, the discharge end 1.1 at the front end of the outer cylinder 1 is of conical design, which is specially cut or integrally molded into uniform multiple (3, 4, 5, 6, 7, 8, 9 or 10) fan-shaped petals 1.2, each of which is connected by a thin wall or seamlessly spliced. When an axial force is applied to the inner cylinder 2 to push it forward, the petals on the outer cylinder 1 are forced to open. Remove the plug 4 at the rear end of the inner cylinder, insert the push rod 3 into the inner cylinder 2, and apply pressure to push the hemostatic agent 5 in the cylinder to be quickly pushed out.

[0038] The inner and outer double-layer cylinder and the rear end of the push rod 3 are respectively provided with an outer cylinder holder 1.3, an inner cylinder holder 2.2 and a push rod holder 3.1 extending radially outwardly along the cylinder, which are convenient for holding and provide a fulcrum for easy use.

[0039] like Figure 4 and Figure 5 As shown, when the present invention is used, the discharge end 1.1 is aligned with the wound and inserted to a suitable depth, and the holder 2.2 on the inner cylinder 2 is pushed toward the wound until it contacts the outer cylinder holder 1.3. At this time, the connections between the valve bodies on the outer cylinder 1 are disconnected, and the discharge end is opened; then the pull ring 4.1 of the plug 4 at the rear end of the inner cylinder 2 is pulled out to remove the plug, and the push rod 3 is inserted, and the push rod 3 is pushed along the wound direction to inject the hemostatic agent 5 into a deeper bleeding site.

[0040] Embodiment 2:

[0041] like Figure 6 As shown, based on Example 1, a movable limiting assembly clamp 6 is further provided on the outer wall of the inner cylinder 2 to fix the relative distance between the inner and outer cylinders to prevent the inner cylinder from moving during transportation and destroying the sealing of the front valve body.

[0042] The limit assembly clamp 6 shown is composed of two parts, such as Figure 7 As shown, 6.1 is an inner cylinder limiting clamp, which is installed on the outer wall of the inner cylinder 2 and has a certain width so that the inner and outer cylinders will not slide. 6.2 is an injection rod assembly clamp, which can assemble the combined cylinder and the injection rod together during packaging, which is convenient for packaging and transportation.

[0043] like Figure 6 As shown, when the present invention is used, first remove the push rod 3 stuck on the combined cylinder, align the discharge end 1.1 with the wound and insert it to a suitable depth, then remove the limit clip 6 stuck on the combined cylinder, and then push the inner cylinder, insert and push the push rod to inject the hemostatic agent in sequence as described in Example 1.

[0044] Embodiment 3:

[0045] Another embodiment of the present invention is Figure 8 As shown, based on embodiments 1 and 2, further, a teardrop-shaped opening 1.4 is provided at the end of the petal body of the outer cylinder to make the petal body easier to open.

[0046] Embodiment 4:

[0047] Another embodiment of the present invention is Fig. 9 As shown, on the basis of embodiments 1, 2, and 3, the inner cylinder is further provided with a limiting protrusion 2.1 for limiting, so that a suitable space is left between the inner cylinder and the outer cylinder holder after the inner cylinder is pushed, which is convenient for applying thrust when pushing the inner cylinder with one hand, or when the outer cylinder is inserted into a deeper wound and causes the outer cylinder to be close to the tissue, it provides finger gripping space for pushing the push rod.

[0048] Embodiment 5:

[0049] like Fig.10 Another embodiment of the position limiting assembly clamp of the present invention is shown, wherein the upper end of the position limiting assembly clamp clamps the position limiting protrusion of the inner cylinder, and the lower end clamps the outer cylinder retaining bracket, thereby limiting the inner cylinder from moving forward or backward.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for pushing a granular hemostatic agent into a deeper wound, comprising a cylindrical outer layer cylinder and a push rod, wherein the outer layer cylinder is closed at the front end and open at the rear end, and characterized in that: An inner cylinder is arranged in the outer cylinder, and the outer diameter of the inner cylinder is consistent with the inner diameter of the outer cylinder, and the two cooperate with each other and can slide relative to each other, and the inner cavity of the cylinder is a space for accommodating hemostatic agents; both ends of the inner cylinder are open; the outer diameter of the injection rod is consistent with the inner diameter of the inner cylinder, and the two cooperate with each other and can slide relative to each other; a plug is provided at the rear end of the inner cylinder, and the outer diameter of the plug is consistent with the inner diameter of the inner cylinder; the front end of the outer cylinder is a conical design, and is cut or injection-molded into a plurality of fan-shaped petals, and each petal is connected by a thin wall or a seamless connection. When an axial force is applied to the inner cylinder to push it forward, the petals on the outer cylinder are forced to be in an open state.

2. The device for pushing granular hemostatic agent into a deeper wound according to claim 1, characterized in that: A pull ring is also provided on the plug.

3. The device for pushing granular hemostatic agent into a deeper wound according to claim 1, characterized in that: A teardrop-shaped opening is arranged at the end of the petal body.

4. The device for pushing granular hemostatic agent into a deeper wound according to claim 1, characterized in that: The outer layer cylinder, the inner layer cylinder and the rear end of the push rod are all provided with a card holder.

5. The device for pushing granular hemostatic agent into a deeper wound according to claim 1, characterized in that: The inner cylinder is provided with a limiting protrusion for limiting position.

6. The device for pushing granular hemostatic agent into a deeper wound according to claim 1, characterized in that: A movable limiting assembly clamp is provided on the outer wall of the inner cylinder to fix the relative distance between the inner and outer cylinders.

7. The device for pushing particulate hemostatic agent into a deeper wound according to claim 6, characterized in that: The position limiting assembly clamp is provided with an injection rod assembly clamp for fixing the injection rod.

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