Solid-state drug propulsion device

Abstract

The present invention provides a solid medicine propulsion device, which relates to the field of medical device technology. The solid medicine propulsion device includes a medicine storage body, a piston and a push rod; the medicine storage body includes a accommodating chamber, one end of the accommodating chamber is a medicine outlet end, and the other end is a mounting port; the piston can be inserted into the accommodating chamber from the mounting port, and the piston includes a blocking portion and an elastic portion, the elastic portion is located on the side of the blocking portion away from the medicine outlet end, and the elastic portion extends along the axial direction of the accommodating chamber and is gradually enlarged from the medicine outlet end to the mounting port; the piston is connected to the push rod, and the piston can move along the axial direction of the accommodating chamber under the action of the push rod, so that the elastic portion is closely abutted against the inner wall of the accommodating chamber. Through the solid medicine propulsion device, the technical problem that the sealing between the piston and the hemostatic agent accommodating space in the prior art is poor, which easily causes the medicine to overflow from this end is solved. The solid medicine propulsion device can be used directly without removing the piston, which reduces the operation steps and improves the use efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a solid medicine propulsion device. Background Art

[0002] When a person is injured and a deep wound or penetrating wound is formed, it is necessary to quickly inject hemostatic agents such as powder hemostatic agents or high expansion hemostatic sponges into the bleeding point of the wound to stop bleeding. In order to facilitate the rapid and accurate injection of powder hemostatic agents or high expansion hemostatic sponges into the bleeding point of the wound in the body, a corresponding thruster has been developed.

[0003] Taking the propelling of powdered hemostatic agent as an example, the existing hemostatic agent propeller includes a cylinder, the inner side of the cylinder is a hemostatic agent accommodating space, and also includes a propulsion assembly, the propulsion assembly includes a push rod, a piston head and a pressure plate. In the injection state, the two ends of the push rod are respectively connected to the piston head and the pressure plate, and the hemostatic agent is pushed out from the discharge end through the pressure of the propulsion assembly.

[0004] However, the sealing performance between the existing piston and the hemostatic agent storage space is poor, which easily causes the agent to overflow from this end; and when in use, the blocking device must be removed and then the propulsion component must be connected to implement drug administration. Summary of the invention

[0005] The object of the present invention is to provide a solid medicine propulsion device to alleviate the technical problem in the prior art that the sealing between the piston and the hemostatic agent containing space is poor, which easily causes the medicine to overflow from this end.

[0006] The embodiment of the present invention provides a solid medicine propulsion device, comprising: a medicine storage body, a piston and a push rod;

[0007] The piston can be inserted into the accommodating cavity through the mounting opening, and the medicine storage body comprises an accommodating cavity, one end of the accommodating cavity is a medicine outlet end, and the other end is a mounting opening;

[0008] The piston comprises a blocking portion and an elastic portion, wherein the elastic portion is located at a side of the blocking portion away from the drug outlet end, and the elastic portion extends along the axial direction of the accommodating cavity and is gradually enlarged from the drug outlet end to the installation opening;

[0009] The piston is connected to the push rod. Under the action of the push rod, the piston can move along the axial direction of the accommodating cavity, so that the elastic part is closely abutted against the inner wall of the accommodating cavity.

[0010] Furthermore, the elastic portion includes a plurality of elastic petal structures, the plurality of elastic petal structures are arranged in a circle, and a gap is left between two adjacent elastic petal structures.

[0011] Furthermore, there are multiple elastic petal structures. When the number is six, the angle between two adjacent elastic petal structures is 60°.

[0012] Furthermore, the cross-sectional shape of the accommodating cavity is circular;

[0013] The blocking portion adopts a cylindrical thin sheet structure that matches the circle;

[0014] The plurality of elastic petal structures are circumferentially arranged on a surface of the cylindrical sheet structure on one side away from the medicine outlet end.

[0015] Furthermore, the plurality of elastic petal structures and the cylindrical thin sheet structure form a mounting groove;

[0016] The push rod is inserted into the mounting groove.

[0017] Furthermore, the push rod and the cylindrical sheet structure are connected by abutment or threading.

[0018] Furthermore, the piston is made of a plastic material that can undergo elastic deformation.

[0019] Furthermore, the hardness of the drug outlet end of the drug storage body is not greater than the hardness of the installation opening.

[0020] Furthermore, the medicine storage body is made of one or two or more materials.

[0021] Furthermore, the medicine outlet cover is provided with a protective cover for preventing medicine from spraying out of the medicine outlet when not in use.

[0022] Beneficial effects:

[0023] The solid medicine propulsion device provided by the present invention has a piston that can be inserted into the accommodating chamber from the installation port, and the piston is connected to the push rod. When a certain thrust is applied to the push rod, the push rod will push the piston to move along the axial direction of the accommodating chamber, that is, move in the direction close to the medicine outlet end, so that the medicine in the accommodating chamber is delivered through the medicine outlet end; in this process, since the piston includes a sealing part and an elastic part, the elastic part is located on the side of the sealing part away from the medicine outlet end, and the elastic part extends along the axial direction of the accommodating chamber and is gradually increased from the medicine outlet end to the installation port, on the one hand, the sealing part can play a role in sealing the installation port, and on the other hand, the elastic part can be tightly abutted against the inner wall of the accommodating chamber, and the closer to the installation port, the greater the force between the elastic part and the inner wall of the accommodating chamber, that is, the tighter, so that the medicine will not overflow from the installation port. Such a setting can increase the sealing between the piston and the inner wall of the accommodating chamber, and it is not easy for the medicine to overflow from the installation port. In addition, even when not in use, the above arrangement can prevent the medicine from overflowing from the installation port. At the same time, the solid medicine propulsion device can be used directly without removing the piston, which reduces the operating steps and improves the efficiency of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A partial cross-sectional view of a solid medicine propulsion device provided by an embodiment of the present invention;

[0026] Figure 2 A cross-sectional view of a medicine storage body in a solid medicine propulsion device provided by an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the structure of a piston in a solid medicine propulsion device provided in an embodiment of the present invention;

[0028] Figure 4 for Figure 3 a top view of the piston shown;

[0029] Figure 5 A cross-sectional view of a piston in a solid medicine propulsion device provided by an embodiment of the present invention;

[0030] Figure 6 A cross-sectional view of a protective sleeve in a solid medicine propulsion device provided in an embodiment of the present invention.

[0031] icon:

[0032] 100-drug storage body; 110-accommodation cavity; 120-drug outlet; 130-installation port;

[0033] 200-piston; 210-sealing part; 220-elastic part; 221-elastic petal structure;

[0034] 300-Putter;

[0035] 400-Protective case. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0043] This embodiment provides a solid medicine propulsion device, such as Figure 1 and Figure 2 As shown, the solid medicine propulsion device includes a medicine storage body 100, a piston 200 and a push rod 300; the medicine storage body 100 includes a accommodating chamber 110, one end of the accommodating chamber 110 is a medicine outlet end 120, and the other end is a mounting port 130; the piston 200 can be inserted into the accommodating chamber 110 through the mounting port 130, the piston 200 includes a blocking portion 210 and an elastic portion 220, the elastic portion 220 is located on the side of the blocking portion 210 away from the medicine outlet end 120, and the elastic portion 220 extends along the axial direction of the accommodating chamber 110 and is gradually enlarged from the medicine outlet end 120 to the mounting port 130; the piston 200 is connected to the push rod 300, and the piston 200 can move along the axial direction of the accommodating chamber 110 under the action of the push rod 300, so that the elastic portion 220 is closely abutted against the inner wall of the accommodating chamber 110.

[0044] The solid medicine propulsion device provided in this embodiment has a piston 200 that can be inserted into the accommodating chamber 110 through the installation port 130. The piston 200 is connected to the push rod 300. When a certain thrust is applied to the push rod 300, the push rod 300 will push the piston 200 to move along the axial direction of the accommodating chamber 110, that is, move in a direction close to the medicine outlet end 120, so that the medicine in the accommodating chamber 110 is delivered through the medicine outlet end 120.

[0045] In the aforementioned process, since the piston 200 includes a sealing portion 210 and an elastic portion 220, the elastic portion 220 is located on a side of the sealing portion 210 away from the drug outlet end 120, and the elastic portion 220 extends along the axial direction of the accommodating chamber 110 and is gradually increased from the drug outlet end 120 to the installation port 130. On the one hand, the sealing portion 210 can play a role in sealing the installation port 130, and on the other hand, the elastic portion 220 can be tightly abutted against the inner wall of the accommodating chamber 110, and the closer to the installation port 130, the greater the force between the elastic portion 220 and the inner wall of the accommodating chamber 110, that is, the tighter, so that the medicine will not overflow from the installation port 130. Such a setting can increase the sealing between the piston 200 and the inner wall of the accommodating chamber 110, and it is not easy for the medicine to overflow from the installation port 130.

[0046] Furthermore, even when not in use, the above arrangement can prevent the medicine from overflowing from the installation port 130 .

[0047] It should be noted that the aforementioned "medicine" can be a powder, or a gel or a paste. For example, the powder can be chitosan hemostatic powder or polypeptide hemostatic powder; the gel or paste can be a self-assembling polypeptide hemostatic agent or fluid gelatin.

[0048] It should also be noted that the piston 200 not only seals the medicine, but also acts as a propeller during use. The piston 200 does not need to be removed, which can reduce the number of operating steps, make the operation quick and efficient, and give full play to the efficacy of the medicine, such as giving full play to the rapid hemostatic effect of hemostatic powder.

[0049] The drug outlet end 120 of the drug storage body 100 may adopt an existing drug outlet structure, which will not be described in detail herein.

[0050] In this embodiment, Figure 3 As shown, the elastic portion 220 includes a plurality of elastic petal structures 221, and the plurality of elastic petal structures 221 are arranged in a circle, and a gap is left between two adjacent elastic petal structures 221. Such an arrangement enables the plurality of elastic petal structures 221 to be blocked by the inner wall of the accommodating chamber 110 when the push rod 300 pushes the piston 200 to move, and can move toward the center of the plurality of elastic petal structures 221.

[0051] Specifically, the gaps are spaced equally at all locations along the axial direction of the accommodating cavity 110; or Figure 3 As shown, the gap is gradually increased from bottom to top. No matter which setting is adopted, the multiple elastic petal structures 221 can be blocked by the inner wall of the accommodating cavity 110, and undergo elastic deformation in the radial direction, thereby making the ends of the multiple elastic petal structures 221 close to the installation port 130 tightly abut against the inner wall of the accommodating cavity 110.

[0052] There is no limitation on the number of the plurality of elastic petal structures 221 . For example, the number of the plurality of elastic petal structures 221 may be two, three, four, five, six, etc.

[0053] In this embodiment, Figure 3 or Figure 4 As shown, there are six elastic flap structures 221, and the angle between two adjacent elastic flap structures 221 is 60°. Among them, there are six gaps in total. Such an arrangement can relatively increase the elastic deformation of the multiple elastic flap structures 221, so that the end of the elastic flap structure 221 close to the installation opening 130 can better abut against the inner wall of the accommodating cavity 110.

[0054] Further, such as Figure 2 and Figure 3 As shown, the cross-sectional shape of the accommodating cavity 110 is circular; the blocking portion 210 adopts a cylindrical thin sheet structure adapted to the circle; and a plurality of elastic petal structures 221 are circumferentially arranged on a side surface of the cylindrical thin sheet structure away from the drug outlet end 120 .

[0055] The diameter of the cylindrical sheet structure is equal to or slightly smaller than the inner diameter of the accommodating cavity 110. When the plurality of elastic petal structures 221 are not installed, the diameter at the larger diameter position is slightly larger than the inner diameter of the accommodating cavity 110.

[0056] Specifically, Figure 3 and Figure 5 As shown, the inner and outer circumferences of each elastic petal structure 221 are arcuate surfaces. The thickness of each elastic petal structure 221 can be equal or unequal at various locations. When the thickness of each elastic petal structure 221 is equal at various locations, the inner and outer circumferences of the plurality of elastic petal structures 221 are conical surfaces. When the thickness of each elastic petal structure 221 is unequal at various locations, as shown in FIG. Figure 5 As shown, the outer circumference surfaces of the plurality of elastic petal structures 221 form a conical surface, and the inner circumference surfaces of the plurality of elastic petal structures 221 form a circular surface.

[0057] In this embodiment, the piston 200 and the push rod 300 can be connected in a variety of ways, such as plug-in connection, snap-on connection, threaded connection, etc.

[0058] In one embodiment of the present application, Figure 3 or Figure 5 As shown, a plurality of elastic petal structures 221 and the cylindrical thin sheet structure form a mounting groove; the push rod 300 is inserted into the mounting groove.

[0059] In other embodiments, the push rod 300 and the cylindrical sheet structure are connected by abutment or threading.

[0060] On the basis of the above-mentioned embodiment, the piston 200 is made of a plastic material that can undergo elastic deformation. Compared with the prior art in which the piston 200 is set to be made of rubber material, the piston 200 of this embodiment can be tightly in contact with the inner wall of the accommodating chamber 110. By improving the material, the friction between the piston 200 and the inner wall of the accommodating chamber 110 can be reduced.

[0061] In this embodiment, the hardness of the drug outlet end 120 of the drug storage body 100 is not greater than the hardness of the installation opening 130. With this arrangement, the drug outlet end 120 of the drug storage body 100 can be inserted into or close to the wound during use to avoid secondary damage to the wound.

[0062] Furthermore, the drug storage body 100 is made of one or two or more materials, preferably a polymer material, such as polycarbonate, polypropylene, polyethylene, etc.

[0063] like Figure 1 and Figure 6 As shown, the medicine outlet end 120 is provided with a protective cover 400 for preventing medicine from spraying out of the medicine outlet end 120 when not in use.

[0064] When using the solid medicine propulsion device, the protective cover 400 can be removed first, the push rod 300 can be installed on the piston 200, and the push rod 300 can be pushed hard. At this time, the push rod 300 pushes the piston 200, so that the space where the medicine is located gradually becomes smaller, thereby spraying the medicine from the medicine outlet end 120.

[0065] 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A solid medicine propulsion device, characterized in that: include: A medicine storage body (100), a piston (200) and a push rod (300); The medicine storage body (100) comprises a containing cavity (110), one end of the containing cavity (110) is a medicine outlet end (120), and the other end is a mounting opening (130); The piston (200) can be inserted into the accommodating chamber (110) through the installation opening (130), and the piston (200) comprises a blocking portion (210) and an elastic portion (220), wherein the elastic portion (220) is located on a side of the blocking portion (210) away from the drug outlet end (120), and the elastic portion (220) extends along the axial direction of the accommodating chamber (110) and is gradually enlarged from the drug outlet end (120) to the installation opening (130); The piston (200) is connected to the push rod (300), and the piston (200) can move along the axial direction of the accommodating chamber (110) under the action of the push rod (300), so that the elastic part (220) is closely abutted against the inner wall of the accommodating chamber (110); The elastic portion (220) comprises a plurality of elastic petal structures (221), wherein the plurality of elastic petal structures (221) are arranged in a circumference, and a gap is left between two adjacent elastic petal structures (221); The cross-sectional shape of the accommodating cavity (110) is circular; The blocking portion (210) adopts a cylindrical thin sheet structure that matches the circular shape; The plurality of elastic petal structures (221) are circumferentially arranged on a surface of a side of the cylindrical thin sheet structure away from the medicine outlet end (120); The medicine outlet end (120) is provided with a protective cover (400) for preventing medicine from being sprayed out of the medicine outlet end (120) when not in use.

2. The solid medicine propulsion device according to claim 1, characterized in that: The elastic petal structures (221) are multiple in number, and when the number is six, the angle between two adjacent elastic petal structures (221) is 60°.

3. The solid medicine propulsion device according to claim 1, characterized in that: The plurality of elastic petal structures (221) and the cylindrical thin sheet structure form a mounting groove; The push rod (300) is inserted into the installation groove.

4. The solid medicine propulsion device according to claim 1, characterized in that: The push rod (300) is connected to the cylindrical sheet structure by abutment or threading.

5. The solid medicine propulsion device according to any one of claims 1 to 4, characterized in that: The piston (200) is made of a plastic material that can undergo elastic deformation.

6. The solid medicine propulsion device according to any one of claims 1 to 4, characterized in that: The hardness of the medicine outlet end (120) of the medicine storage body (100) is not greater than the hardness of the installation opening (130).

7. The solid medicine propulsion device according to claim 6, characterized in that: The medicine storage body (100) is made of one or two or more materials.

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