Flexible medicine injection head for deep pipeline of living body and applicator

Abstract

The invention provides a deep conduit flexible medicine injection head and a medicator for an organism, and the deep conduit flexible medicine injection head comprises a medicine applying part which has elasticity and is used for applying medicine to a target part of the organism; the pesticide applying part is arranged in an inner cavity of the pesticide applying part; the opening and closing driving sleeve and the medicine applying part move relatively, so that the medicine applying part is folded and unfolded, the instrument conveying radius of the medicine injection head is reduced when the medicine injection head is folded, and the medicine applying part is unfolded to a proper position and tightly attached to human tissue when the medicine injection head is unfolded. Through the structure, the pesticide application difficulty can be effectively reduced. And uniform medicament coating is ensured, and missing parts are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a flexible drug injection head and a drug applicator for deep channels of a biological body. Background Art

[0002] There are various deep pipes in the intestines, cervix and other locations of the human body and other organisms. There are certain difficulties in administering drugs in a limited area in the above-mentioned pipeline system. In the prior art, it is often dependent on the skills of medical workers to extend gauze or dressing catheters into the body for drug coating or use non-precise liquid drug infusion or placement of soluble drug suppositories. However, the above-mentioned treatment methods are heavily dependent on the technical level of medical workers, not only have the problems of complicated operation and poor patient experience, but also are prone to uneven and inaccurate drug coating and missed drug administration sites, affecting the treatment effect. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the prior art has the disadvantages of difficulty in accurately administering drugs on the surface of deep channels of organisms, serious reliance on the technical level of medical workers, complicated operation, poor patient experience, and uneven and inaccurate drug coating, and provides a flexible drug injection head and drug injector for deep channels of organisms that are easy to operate and have uniform drug coating, including:

[0004] A drug application part, the drug application part is elastic and is used for applying the drug to a target part of a biological body;

[0005] An opening and closing driving sleeve, wherein the medicine dispensing part is arranged in the inner cavity of the medicine dispensing part; the opening and closing driving sleeve and the medicine dispensing part are relatively displaced so that the medicine dispensing part can realize folding and opening actions, wherein the instrument conveying radius of the medicine injection head is reduced when folding, and the medicine dispensing part is opened to an appropriate position and closely fits human tissue when opening;

[0006] When the medication applying part is in the open state, the opening and closing driving sleeve and the medication applying part move relative to each other in one direction, the medication applying part gradually breaks away from the restraint of the opening and closing driving sleeve, and the medication applying part opens to an appropriate position under the action of its own elastic restoring force; when the medication applying part is in the folded state, the opening and closing driving sleeve and the medication applying part move relative to each other in the other direction, and the opening and closing driving sleeve is close to the top of the medication applying part to facilitate the insertion of the injection head into the biological body.

[0007] Optionally, the drug dispensing unit includes:

[0008] A medicine-applying conical cavity, wherein one end of the medicine-applying conical cavity facing the medicine-applying target is in an elastic cone shape; the medicine-applying conical cavity is located in the inner cavity of the opening and closing driving sleeve and moves in a telescopic manner relative to the opening and closing driving sleeve; the inner cavity of the medicine-applying conical cavity is a medicine storage space for accommodating medicine;

[0009] An elastic bracket is arranged on the medicine compress conical cavity; the elastic bracket wraps the medicine compress conical cavity; in an open state, the elastic bracket opens and closely fits human tissue under the action of its own elastic force; in a folded state, the elastic bracket is compressed in the opening and closing driving sleeve;

[0010] The medicine compress bag is made of a deformable flexible material and is arranged on the outer periphery of the medicine compress conical cavity and the elastic bracket and on the side facing the medicine application target; the medicine storage space of the medicine compress conical cavity is connected with the medicine compress bag, and the medicine in the medicine storage space enters the medicine compress conical cavity and the medicine compress bag in turn; the medicine compress bag is also provided with a first medicine outlet channel for the medicine to pass through the surface of the medicine compress bag and be applied to human tissue.

[0011] Optionally, the elastic support is a nickel-titanium alloy mesh.

[0012] Optionally, a flexible injection head for deep channels of a living body may also include:

[0013] A medicine pushing rod is provided on the connecting surface between the medicine compress conical cavity and the medicine compress bag, and a second medicine outlet channel for the medicine to enter the medicine compress bag is arranged; the medicine pushing rod is driven to slide in the medicine storage space, and is used to squeeze the medicine into the medicine compress bag through the second medicine outlet channel and overflow from the first medicine outlet channel of the medicine compress bag.

[0014] Optionally, a diaphragm is provided on the outer surface of the elastic support; the diaphragm is used to prevent medicine from entering the elastic support.

[0015] Optionally, the outer periphery of the elastic support is closely connected to the inner wall of the opening and closing driving sleeve, so that the medicine applying part is limitedly fixed in the opening and closing driving sleeve;

[0016] The opening and closing driving sleeve is driven to telescope relative to the medicine dispensing portion to respectively realize the folding and opening of the medicine dispensing portion.

[0017] Optionally, the elastic support is fixedly arranged on the medicine compress conical cavity, and the medicine compress bag is a flexible membrane whose outer periphery is fixedly arranged on the elastic support and the medicine compress conical cavity.

[0018] Optionally, the opening and closing drive sleeve is a conical structure that retracts toward the medication application portion; the side of the opening and closing drive sleeve corresponding to the medication application portion has an opening for the medication application portion to enter and exit, and the other end of the opening and closing drive sleeve is provided with a hole for the medication application conical cavity to pass through.

[0019] A drug injector comprises a flexible drug injector head for a deep channel of a biological body.

[0020] A method for using a deep pipeline flexible drug injection head, used for using the deep pipeline flexible drug injection head, comprising:

[0021] Step S1, inserting the deep pipeline flexible injection head into the body to be treated;

[0022] Step S2, the opening and closing driving sleeve and the medicine applying part move relative to each other in one direction, the medicine applying part gradually breaks away from the restraint of the opening and closing driving sleeve, and the medicine applying part opens to a proper position under the action of its own elastic restoring force to achieve contact with the medicine applying target;

[0023] Step S3, pushing the medicine pusher to press the medicine into the medicine application part, and the medicine overflows from the medicine outlet channel on the surface of the medicine application part and is applied to the patient's affected part;

[0024] The medicine in the medicine storage space enters the medicine compress conical cavity and the medicine compress bag in sequence, and the medicine compress bag expands into a shape that matches the human body after being filled with medicine;

[0025] Step S4, the opening and closing driving sleeve and the drug applying part are moved relative to each other in another direction, and the drug applying part is moved into the opening and closing driving sleeve so that the deep channel drug injection head can extend out of the biological body.

[0026] The technical solution of the present invention has the following advantages:

[0027] 1. The deep pipeline flexible injection head provided by the present invention comprises:

[0028] A drug application part, the drug application part is elastic and is used for applying the drug to a target part of a biological body;

[0029] An opening and closing driving sleeve, wherein the medicine dispensing part is arranged in the inner cavity of the medicine dispensing part; the opening and closing driving sleeve and the medicine dispensing part are relatively displaced so that the medicine dispensing part can realize folding and opening actions, wherein the instrument conveying radius of the medicine injection head is reduced when folding, and the medicine dispensing part is opened to an appropriate position and closely fits human tissue when opening;

[0030] When the medication applying part is in the open state, the opening and closing driving sleeve and the medication applying part move relative to each other in one direction, the medication applying part gradually breaks away from the restraint of the opening and closing driving sleeve, and the medication applying part opens to an appropriate position under the action of its own elastic restoring force; when the medication applying part is in the folded state, the opening and closing driving sleeve and the medication applying part move relative to each other in the other direction, and the opening and closing driving sleeve is close to the top of the medication applying part to facilitate the insertion of the injection head into the biological body.

[0031] In the present invention, the folding and opening of the medication application part can be effectively achieved through the relative displacement of the above-mentioned opening and closing drive sleeve and the medication application part. When the medication application part is folded, the instrument delivery radius of the medication injection head is reduced, which can facilitate medical workers to insert or withdraw the deep channel medication injection head into or out of the patient's body. When the medication application part is opened, the medication application part opens to the appropriate position and fits tightly to the human tissue, so that the medication application part and the patient's diseased position are completely fitted and the medicine is evenly applied to the patient's diseased position. The folding and opening of the elastic medication application part is achieved by the above-mentioned opening and closing drive sleeve, which has the advantages of stable and reliable structure and small size.

[0032] 2. The deep pipeline flexible injection head provided by the present invention, the drug application part comprises:

[0033] A medicine-applying conical cavity, wherein one end of the medicine-applying conical cavity facing the medicine-applying target is in an elastic cone shape; the medicine-applying conical cavity is located in the inner cavity of the opening and closing driving sleeve and moves in a telescopic manner relative to the opening and closing driving sleeve; the inner cavity of the medicine-applying conical cavity is a medicine storage space for accommodating medicine;

[0034] An elastic bracket is arranged on the medicine compress conical cavity; the elastic bracket wraps the medicine compress conical cavity; in an open state, the elastic bracket opens and closely fits human tissue under the action of its own elastic force; in a folded state, the elastic bracket is compressed in the opening and closing driving sleeve;

[0035] The medicine compress bag is made of a deformable flexible material and is arranged on the outer periphery of the medicine compress conical cavity and the elastic bracket and on the side facing the medicine application target; the medicine storage space of the medicine compress conical cavity is connected with the medicine compress bag, and the medicine in the medicine storage space enters the medicine compress conical cavity and the medicine compress bag in turn; the medicine compress bag is also provided with a first medicine outlet channel for the medicine to pass through the surface of the medicine compress bag and be applied to human tissue.

[0036] In the present invention, the inner cavity of the compress conical cavity is set as a storage space for accommodating medicines. And, an elastic bracket with elasticity is set on the compress conical cavity. The above elastic bracket can be deformed under the action of pressure, so as to be compressed and stored in the opening and closing drive sleeve. Moreover, when the above elastic bracket is under pressure, it will store elastic force through deformation, and then when the compression force driving the elastic bracket disappears, the elastic bracket will restore the expansion state under the action of its own elastic force, so that the medicine application part is more suitable for the patient's sick position. Moreover, the above medicine bag attached to the elastic bracket and the surface of the compress conical cavity is made of flexible material, which can expand into an appropriate shape when filled with medicine, better fit the patient's position, and ensure the effect of medicine application.

[0037] 3. The deep pipeline flexible injection head provided by the present invention also includes: a medicine pushing rod, and a second medicine outlet channel for the medicine to enter the medicine bag is arranged on the connecting surface of the medicine compress conical cavity and the medicine compress bag; the medicine pushing rod is driven to slide in the medicine storage space, and is used to squeeze the medicine into the medicine compress bag through the second medicine outlet channel and overflow from the first medicine outlet channel of the medicine compress bag.

[0038] The medicine is squeezed into the medicine bag of the medicine application part by sliding the medicine push rod arranged in the medicine storage space, and the medicine passes through the first medicine outlet channel on the surface of the medicine bag and is applied to the human tissue. The above-mentioned drug administration method can effectively ensure the drug administration amount of the deep channel injection head and ensure the drug administration effect. Moreover, it also has the advantages of exquisite and reliable structure.

[0039] 4. In the deep pipeline flexible injection head provided by the present invention, a diaphragm is provided on the outer surface of the elastic support; the diaphragm is used to prevent the medicine from entering the elastic support.

[0040] In the present invention, a diaphragm is attached to the surface of the elastic support of the elastic structure, and the diaphragm can effectively prevent the medicine from entering the elastic support, so that the medicine is stored between the diaphragm and the medicine bag.

[0041] 5. The drug injector provided by the present invention comprises: a flexible drug injector head for deep pipelines of a living body, so it has all the advantages of a flexible drug injector head for deep pipelines.

[0042] 6. The method for using the deep pipeline flexible injection head provided by the present invention is used for using the deep pipeline flexible injection head, comprising:

[0043] Step S1, inserting the deep pipeline flexible injection head into the body to be treated;

[0044] Step S2, the opening and closing driving sleeve and the medicine applying part move relative to each other in one direction, the medicine applying part gradually breaks away from the restraint of the opening and closing driving sleeve, and the medicine applying part opens to a proper position under the action of its own elastic restoring force to achieve contact with the medicine applying target;

[0045] Step S3, pushing the medicine pusher to press the medicine into the medicine application part, and the medicine overflows from the medicine outlet channel on the surface of the medicine application part and is applied to the patient's affected part;

[0046] The medicine in the medicine storage space enters the medicine compress conical cavity and the medicine compress bag in sequence, and the medicine compress bag expands into a shape that matches the human body after being filled with medicine;

[0047] Step S4, the opening and closing driving sleeve and the drug applying part are moved relative to each other in another direction, and the drug applying part is moved into the opening and closing driving sleeve so that the deep channel drug injection head can extend out of the biological body.

[0048] In the present invention, the use method of the injection head can make medical workers simply and conveniently implement the work of applying medicine to the patient's affected area, effectively solving the existing situation that the deep channel application of medicine in the organism is difficult and heavily depends on the technical level of medical workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] A more complete understanding of the present invention and its attendant advantages and features will be more readily appreciated by reference to the following detailed description taken in conjunction with the accompanying drawings, in which:

[0050] Figure 1 The schematic diagram shows the structure of the deep pipeline flexible drug injection head in the drug application state according to the preferred embodiment 1 of the present invention;

[0051] Figure 2 The figure schematically shows the folded state of the deep pipeline flexible injection head according to the preferred embodiment 1 of the present invention when no medicine is squeezed.

[0052] Description of reference numerals:

[0053] 1-drug application part; 2-opening and closing driving sleeve; 3-drug application conical cavity; 4-elastic bracket; 5-drug application bag; 6-drug storage space; 7-drug pushing rod; 8-second drug outlet channel; 9-diaphragm; 10-first drug outlet channel.

[0054] It should be noted that the drawings are used to illustrate the present invention, rather than to limit the present invention. Note that the drawings showing the structures may not be drawn to scale. In addition, in the drawings, the same or similar elements are marked with the same or similar reference numerals. DETAILED DESCRIPTION

[0055] In order to make the contents of the present invention clearer and easier to understand, the contents of the present invention are described in detail below in conjunction with specific embodiments and drawings.

[0056] Example 1

[0057] <Deep Pipeline Injection Head Preferred Embodiment 1>

[0058] Figure 1 The schematic diagram of the structure of the deep pipeline flexible drug injection head in the drug application state according to the preferred embodiment of the present invention is shown schematically. Figure 2 The figure schematically shows the folded state of the deep pipeline flexible injection head according to the preferred embodiment of the present invention when no medicine is squeezed.

[0059] like Figure 1 and Figure 2 As shown, a flexible drug injection head for deep channels of a biological body according to a preferred embodiment of the present invention comprises:

[0060] The drug application part 1 is elastic and is used for applying the drug to the target part of the organism;

[0061] An opening and closing driving sleeve 2, wherein the medicine application part 1 is arranged in the inner cavity of the medicine application part 1; the opening and closing driving sleeve 2 and the medicine application part 1 are relatively displaced so that the medicine application part 1 can realize folding and opening actions, and the instrument conveying radius of the injection head is reduced when folding, and the medicine application part 1 is opened to a proper position and closely fits human tissue when opening; in this embodiment, the opening and closing driving sleeve 2 is a conical structure that retracts toward the medicine application part 1; the opening and closing driving sleeve 2 has an opening for the medicine application part 1 to enter and exit on one side corresponding to the medicine application part 1, and the other end of the opening and closing driving sleeve 2 is provided with a hole for the medicine application conical cavity 3 to pass through;

[0062] When the medication part 1 is in the open state, the opening and closing driving sleeve 2 and the medication part 1 move relative to each other in one direction, the medication part 1 gradually breaks away from the restraint of the opening and closing driving sleeve 2, and the medication part 1 opens to an appropriate position under the action of its own elastic restoring force; when the medication part 1 is in the folded state, the opening and closing driving sleeve 2 and the medication part 1 move relative to each other in the other direction, and the opening and closing driving sleeve 2 is close to the top of the medication part 1 to facilitate the injection head to extend into the biological body.

[0063] In this embodiment, if Figure 1 and Figure 2 As shown, in order to realize the folding and opening action of the medication dispensing part 1, the medication dispensing part 1 includes:

[0064] The medicine compressing conical cavity 3 has an elastic cone shape at one end thereof facing the medicine compressing target; the medicine compressing conical cavity 3 is located in the inner cavity of the opening and closing driving sleeve 2 and moves in a telescopic manner relative to the opening and closing driving sleeve 2; the inner cavity of the medicine compressing conical cavity 3 is a medicine storage space 6 for accommodating medicine;

[0065] The elastic support 4 is a nickel-titanium alloy mesh, and a diaphragm 9 is provided on the outer surface of the elastic support 4; the diaphragm 9 is used to prevent the medicine from entering the elastic support 4. In addition, the elastic support 4 is arranged on the medicine compressing conical cavity 3; the elastic support 4 wraps the medicine compressing conical cavity 3; in the open state, the elastic support 4 opens and fits closely to the human body tissue under the action of its own elastic force; in the folded state, the elastic support 4 is compressed in the opening and closing driving sleeve 2;

[0066] The medicine bag 5 is a deformable flexible material, which is arranged on the outer periphery of the medicine compressing conical cavity 3 and the elastic support 4 and faces the side of the medicine application target; the elastic support 4 is fixedly arranged on the medicine compressing conical cavity 3, and the medicine compressing bag 5 is a flexible film with its outer periphery attached and fixedly arranged on the elastic support 4 and the medicine compressing conical cavity 3. The medicine storage space 6 of the medicine compressing conical cavity 3 is connected with the medicine compressing bag 5, and the medicine in the medicine storage space 6 enters the medicine compressing conical cavity 3 and the medicine compressing bag 5 in turn; the medicine compressing bag 5 is also provided with a first medicine outlet channel 10 for the medicine to pass through the surface of the medicine compressing bag 5 and be applied on the human tissue.

[0067] In order to ensure the drug dosage of the deep pipeline injection head and the drug administration effect, the deep pipeline flexible injection head for organisms also includes:

[0068] A medicine pushing rod 7 is provided on the connecting surface between the medicine compress conical cavity 3 and the medicine compress bag 5, with a second medicine outlet channel 8 for the medicine to enter the medicine compress bag 5; the medicine pushing rod 7 is driven to slide in the medicine storage space 6, and is used to squeeze the medicine into the medicine compress bag 5 through the second medicine outlet channel 8 and overflow from the first medicine outlet channel 10 of the medicine compress bag 5.

[0069] In order to achieve the limited fixation of the medication applicator 1, the outer periphery of the elastic bracket 4 is connected to the inner wall of the opening and closing drive sleeve 2, so that the medication applicator 1 is limited and fixed in the opening and closing drive sleeve 2; the opening and closing drive sleeve 2 is driven to extend and retract relative to the medication applicator 1 to respectively achieve the folding and opening of the medication applicator 1.

[0070] Of course, in this embodiment, the material of the elastic bracket 4 is not specifically limited. In other embodiments, the elastic bracket 4 may also be made of other elastic materials.

[0071] Of course, in this embodiment, the specific structure of the opening and closing driving sleeve 2 is not specifically limited. In other embodiments, the opening and closing driving sleeve 2 can also be a cylindrical structure.

[0072] <Method Example>

[0073] Figure 1 The schematic diagram of the structure of the deep pipeline flexible drug injection head in the drug application state according to the preferred embodiment of the present invention is shown schematically. Figure 2 The figure schematically shows the folded state of the deep pipeline flexible injection head according to the preferred embodiment of the present invention when no medicine is squeezed.

[0074] A method for using a flexible drug injection head for a deep pipeline, comprising:

[0075] Step S1, inserting the deep pipeline flexible injection head into the body to be treated;

[0076] Step S2, the opening and closing driving sleeve 2 and the medicine applying part 1 move relative to each other in one direction, the medicine applying part 1 gradually breaks away from the restraint of the opening and closing driving sleeve 2, and the medicine applying part 1 opens to a proper position under the action of its own elastic restoring force to achieve contact with the medicine applying target;

[0077] In the above process, the opening and closing driving sleeve 2 is driven away from the top position of the medicine applying part 1, so as to realize the opening action of the medicine applying part 1;

[0078] Step S3, pushing the medicine pushing rod 7 to press the medicine into the medicine applying part 1, and the medicine overflows from the medicine outlet channel on the surface of the medicine applying part 1 and is applied to the patient's affected part;

[0079] The medicine in the medicine storage space 6 enters the medicine compress conical cavity 3 and the medicine compress bag 5 in sequence, and the medicine compress bag 5 is filled with medicine and expands into a shape that is compatible with the human body;

[0080] Step S4, the opening and closing driving sleeve 2 and the drug applying part 1 are moved relative to each other in another direction, and the drug applying part 1 is moved into the opening and closing driving sleeve 2, so that the deep channel drug injection head can be extended out of the biological body;

[0081] In the above process, the opening and closing driving sleeve 2 is driven to approach the top position of the medicine applying part 1, so as to realize the folding and storage action of the medicine applying part 1.

[0082] In addition, it should be noted that, unless otherwise specified, the terms "first", "second", "third", etc. in the specification are only used to distinguish the various components, elements, steps, etc. in the specification, and are not used to indicate the logical relationship or sequential relationship between the various components, elements, steps, etc.

[0083] It is to be understood that, although the present invention has been disclosed as a preferred embodiment, the above embodiment is not intended to limit the present invention. For any person skilled in the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or modified into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A flexible injection head for deep pipelines of organisms, characterized in that: include: A drug application part (1), the drug application part (1) is elastic and is used to apply drugs to a target part of a biological body; An opening and closing driving sleeve (2), wherein the medicine applying portion (1) is arranged in an inner cavity of the medicine applying portion (1); the opening and closing driving sleeve (2) and the medicine applying portion (1) are relatively displaced so that the medicine applying portion (1) can be folded and opened, and the instrument conveying radius of the medicine injection head is reduced when folding, and the medicine applying portion (1) is opened to an appropriate position and closely fits human tissue when opening; When the medication application part (1) is in an open state, the opening and closing driving sleeve (2) and the medication application part (1) are mutually moved in one direction, the medication application part (1) gradually breaks away from the restraint of the opening and closing driving sleeve (2), and the medication application part (1) is opened to an appropriate position under the action of its own elastic restoring force; when the medication application part (1) is in a folded state, the opening and closing driving sleeve (2) and the medication application part (1) are mutually moved in another direction, the opening and closing driving sleeve (2) is close to the top end of the medication application part (1), so that the injection head can be inserted into the biological body.

2. The flexible drug injection head for deep pipelines of a living body according to claim 1, characterized in that: The drug dispensing unit (1) comprises: A medicine compress conical cavity (3), wherein one end of the medicine compress conical cavity (3) facing the medicine application target is in the shape of an elastic cone; the medicine compress conical cavity (3) is located in the inner cavity of the opening and closing drive sleeve (2) and moves in a telescopic manner relative to the opening and closing drive sleeve (2); the inner cavity of the medicine compress conical cavity (3) is a medicine storage space (6) for accommodating medicine; An elastic support (4) is arranged on the compress conical cavity (3); the elastic support (4) wraps the compress conical cavity (3); in an open state, the elastic support (4) opens and closely fits human tissue under the action of its own elastic force; in a folded state, the elastic support (4) is compressed in the opening and closing drive sleeve (2); The medicine compress bag (5) is made of a deformable flexible material and is arranged on the outer periphery of the medicine compress conical cavity (3) and the elastic support (4) and on the side facing the medicine application target; the medicine storage space (6) of the medicine compress conical cavity (3) is connected to the medicine compress bag (5), and the medicine in the medicine storage space (6) enters the medicine compress conical cavity (3) and the medicine compress bag (5) in sequence; the medicine compress bag (5) is also provided with a first medicine outlet channel (10) for the medicine to pass through the surface of the medicine compress bag (5) and be applied on human tissue.

3. The flexible drug injection head for deep pipelines of a living body according to claim 2, characterized in that: The elastic support (4) is a nickel-titanium alloy mesh.

4. The flexible drug injection head for deep pipelines of a living body according to claim 2, characterized in that: Also includes: A medicine pushing rod (7) is provided on the connection surface between the medicine compress conical cavity (3) and the medicine compress bag (5), and a second medicine outlet channel (8) for the medicine to enter the medicine compress bag (5) is arranged; the medicine pushing rod (7) is driven to slide in the medicine storage space (6) and is used to squeeze the medicine into the medicine compress bag (5) through the second medicine outlet channel (8) and overflow from the first medicine outlet channel (10) of the medicine compress bag (5).

5. The flexible drug injection head for deep pipelines of a living body according to claim 2, characterized in that: The outer surface of the elastic support (4) is provided with a diaphragm (9); the diaphragm (9) is used to prevent medicine from entering the elastic support (4).

6. The flexible drug injection head for deep channels of a living body according to any one of claims 2 to 5, characterized in that: The outer periphery of the elastic support (4) is closely connected to the inner wall of the opening and closing driving sleeve (2), so that the medicine applying part (1) is fixed in position within the opening and closing driving sleeve (2); The opening and closing drive sleeve (2) is driven to telescope relative to the medicine applying portion (1) so as to respectively realize the folding and opening of the medicine applying portion (1).

7. The flexible drug injection head for deep pipelines of a living body according to claim 2, characterized in that: The elastic support (4) is fixedly arranged on the compress conical cavity (3), and the compress bag (5) is a flexible membrane with its outer periphery fixedly arranged on the elastic support (4) and the compress conical cavity (3).

8. The flexible drug injection head for deep pipelines of a living body according to claim 4, characterized in that: The opening and closing driving sleeve (2) is a conical structure that retracts inwardly toward the medicine applying portion (1); the side of the opening and closing driving sleeve (2) corresponding to the medicine applying portion (1) has an opening for the medicine applying portion (1) to enter and exit, and the other end of the opening and closing driving sleeve (2) is provided with a hole for the medicine applying conical cavity (3) to pass through.

9. A drug injector, characterized in that: include: A flexible injection head for deep channels of a living body according to any one of claims 1 to 8.

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