Deep pipeline medicine injection head and medicine injection device for living body

Abstract

The invention provides a deep pipeline medicine injection head and a medicine injection device for an organism, and the medicine injection head comprises a medicine applying part which is used for applying medicine to a target part of the organism; the sleeve assembly comprises an outer sleeve and an inner sleeve which are connected in a sleeved and sliding mode. The opening and closing assembly comprises an outer connecting rod and an inner connecting rod, and the inner connecting rod is fixed to the inner sleeve fixing part, close to the head, of the inner sleeve through a hinge; the outer connecting rod is hinged and fixed to an outer sleeve fixing part at the head end of the outer sleeve, and the opening and closing assembly is used for supporting the pesticide applying part to apply pesticide; the outer sleeve and the inner sleeve move relatively, so that the medicine applying part is folded and unfolded, the instrument conveying radius of the deep pipeline medicine injection head is reduced during folding, and the medicine applying part is unfolded to a proper position and tightly attached to human tissue during unfolding. By means of the structure, the pesticide applying difficulty can be effectively reduced, it is guaranteed that pesticide is evenly applied, and missing parts are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a deep channel injection head and an injector for 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 in view of the difficulties in accurate drug delivery to the surface of deep channels of a living body in the prior art, which is heavily dependent on the technical level of medical workers, and has the disadvantages of complicated operation, poor patient experience, and uneven and inaccurate drug coating, a drug injection head and injector for deep channels of a living body that is easy to operate and has uniform drug coating is provided.

[0004] According to the present invention, there is provided a deep channel injection head for a living body, comprising:

[0005] A drug application part, which is used to apply the drug to a target site of a living body;

[0006] The casing assembly comprises: an outer casing and an inner casing which are sleeved and slidably connected;

[0007] The opening and closing assembly comprises: an outer connecting rod and an inner connecting rod, wherein the inner connecting rod is hingedly fixed to the inner sleeve fixing part near the head of the inner sleeve; the outer connecting rod is hingedly fixed to the outer sleeve fixing part at the head end of the outer sleeve, and the opening and closing assembly is used to support the drug application part to apply drugs; the outer sleeve and the inner sleeve are relatively displaced so that the opening and closing assembly can realize folding and opening actions, and the instrument delivery radius of the deep pipeline injection head is reduced when folding, and the drug application part is opened to a proper position and closely fits human tissue when opening;

[0008] When the opening and closing assembly is in the open state, the outer sleeve and the inner sleeve move relative to each other in one direction, and the inner connecting rod and the outer connecting rod open in conjunction with each other to prop the drug application part to an appropriate position for drug application; in the opening and closing assembly state, the outer sleeve and the inner sleeve move relative to each other in the other direction, and the inner connecting rod and the outer connecting rod open in conjunction with each other and approach the sleeve assembly to facilitate the deep pipeline injection head to extend into the biological body.

[0009] Optional, deep channel injection head for biological body, also includes:

[0010] The medicine pushing rod is a medicine storage cavity for accommodating medicine, the inner cavity of the inner sleeve is a medicine storage cavity for accommodating medicine, the medicine applying part is connected with the medicine storage cavity and a medicine outlet channel is arranged on the surface of the medicine applying part; the medicine pushing rod is driven and slidably arranged in the medicine storage cavity, and is used to squeeze the medicine into the medicine applying part and overflow from the medicine outlet channel.

[0011] Optionally, the drug dispensing unit includes:

[0012] The medicine compress conical cavity is made of elastic material and is in a specific elastic cone shape; the medicine compress conical cavity is located in the middle of the sleeve assembly;

[0013] The medicine compress bag is made of a deformable flexible material and is arranged at the periphery of the medicine compress conical cavity. When the medicine compress conical cavity is filled with medicine, it expands into a shape that matches the human body. The medicine compress bag is arranged on the sleeve assembly and is connected with the medicine compress conical cavity. The medicine in the medicine storage cavity enters the medicine compress conical cavity and the medicine compress bag in sequence.

[0014] The medicine pack comprises: a perforated soft membrane facing the human tissue side and a closed soft membrane away from the human tissue and connected with the opening and closing component; the perforated soft membrane and the closed soft membrane are tightly connected to form the medicine pack.

[0015] Optionally, a limiting balloon is further provided at the end of the conical cavity for applying the medicine, and the limiting balloon is used to prevent the medicine from overflowing from the target range of application.

[0016] Optionally, a filling liquid receiving chamber for receiving a filling liquid is provided in the compress conical cavity, and the filling liquid receiving chamber is communicated with the limiting balloon;

[0017] A push rod is provided at one end of the medicine pushing rod facing the medicine applying conical cavity, and the push rod is telescopically arranged in the filling liquid holding cavity; when the medicine pushing rod pushes medicine, the push rod pushes the filling liquid into the limiting balloon to expand the limiting balloon; when the medicine pushing rod is reset and retracted, the filling liquid in the limiting balloon flows back into the filling liquid holding cavity.

[0018] Optionally, the medicine pushing rod is provided with a push rod accommodating groove extending along the length direction thereof for accommodating the push rod; the push rod is embedded in the push rod accommodating groove to increase the medicine pushing distance of the medicine pushing rod.

[0019] Optionally, the outer sleeve is driven to slide on the inner sleeve; when the outer sleeve is driven to move toward the medication application portion, the opening and closing assembly gradually opens; when the outer sleeve is driven to move away from the medication application portion, the opening and closing assembly gradually folds.

[0020] Optionally, the inner sleeve is driven to slide on the outer sleeve to achieve folding and opening actions of the opening and closing assembly.

[0021] A drug injector comprises a drug injector head for deep channel of a biological body.

[0022] A method for using a deep channel injection head, which is used to use the deep channel injection head for a living body, comprising:

[0023] Step, inserting the deep channel injection head into the body to be treated;

[0024] Step, pushing the outer sleeve to move to a position close to the medicine dispensing part, the inner connecting rod links the outer connecting rod to open, and the opening and closing assembly opens to prop open the medicine dispensing part;

[0025] Step, pushing the medicine pushing rod to press the medicine into the medicine applying part, and the medicine overflows from the medicine outlet channel on the surface of the medicine applying part and is applied to the patient's affected part;

[0026] Step: pull the outer sleeve to fold and reset the opening and closing assembly, and take out the deep pipeline injection head.

[0027] <Technical Effects>

[0028] The technical solution of the present invention has the following advantages:

[0029] 1. First, the present invention provides a deep channel injection head for a living body, comprising:

[0030] A drug application part, which is used to apply the drug to a target site of a living body;

[0031] The casing assembly comprises: an outer casing and an inner casing which are sleeved and slidably connected;

[0032] The opening and closing assembly comprises: an outer connecting rod and an inner connecting rod, wherein the inner connecting rod is hingedly fixed to the inner sleeve fixing part near the head of the inner sleeve; the outer connecting rod is hingedly fixed to the outer sleeve fixing part at the head end of the outer sleeve, and the opening and closing assembly is used to support the drug application part to apply drugs; the outer sleeve and the inner sleeve are relatively displaced so that the opening and closing assembly can realize folding and opening actions, and the instrument delivery radius of the deep pipeline injection head is reduced when folding, and the drug application part is opened to a proper position and closely fits human tissue when opening;

[0033] When the opening and closing assembly is in the open state, the outer sleeve and the inner sleeve move relative to each other in one direction, and the inner connecting rod and the outer connecting rod open in conjunction with each other to prop the drug application part to an appropriate position for drug application; when the opening and closing assembly is in the folded state, the outer sleeve and the inner sleeve move relative to each other in the other direction, and the inner connecting rod and the outer connecting rod open in conjunction with each other and approach the sleeve assembly to facilitate the deep pipeline injection head to extend into the biological body.

[0034] In the present invention, the above-mentioned opening and folding opening and closing components can effectively open the medication application part when applying the medicine, so that the medication application part can be completely fitted with the patient's affected area, ensuring that the medicine is evenly applied to the patient's affected area. Moreover, since the medication application part can be completely fitted with the patient's area to be applied in any shape, the medicine can be completely applied without missing any area.

[0035] At the same time, the above-mentioned opening and closing assembly is in the folded position, which can facilitate medical workers to insert or withdraw the deep channel injection head into or out of the patient's body. The inner connecting rod and the outer connecting rod of the above-mentioned opening and closing assembly are driven by the relative movement of the outer sleeve and the inner sleeve to realize the opening and closing action, and has the advantages of stable and reliable structure and small size.

[0036] More specifically, the size of the female cervix varies from person to person. The size of the cervix of many women is very small. If the radial size is too large, it is easy to damage the female cervix during drug administration. However, if it is too small, it is easy to cause problems such as too small drug administration range or uneven drug administration. The present invention can minimize the size of the injection head based on the closure of the opening and closing component so that the insertion treatment of the cervix is ​​not easy to damage the cervix. At the same time, after insertion, the drug can be completely and evenly applied by opening the opening and closing component to apply the drug. Therefore, this improved example of the present invention can achieve the maximum drug administration range and uniform drug administration while minimizing the drug administration device and thus not reducing cervical damage.

[0037] 2. In a further improvement, the deep channel injection head for a biological body provided by the present invention further includes: a medicine pushing rod, the inner cavity of the inner sleeve is a medicine storage cavity for accommodating medicine, the medicine application part is connected with the medicine storage cavity and a medicine outlet channel is arranged on the surface of the medicine application part; the medicine pushing rod is driven to slide in the medicine storage cavity, and is used to squeeze the medicine into the medicine application part and overflow from the medicine outlet channel.

[0038] In the present invention, the inner cavity of the inner sleeve is set as a medicine storage cavity for accommodating medicine. And, the medicine is squeezed into the medicine application part and overflowed from the medicine outlet channel by a medicine pusher rod slidably arranged in the medicine storage cavity. 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] 3. In a further improvement, the deep channel injection head for a living body provided by the present invention, the drug application part comprises:

[0040] The medicine compress conical cavity is made of elastic material, and when the medicine compress conical cavity is filled with medicine, it expands into a cone shape; the medicine compress conical cavity is located in the middle of the sleeve assembly;

[0041] The medicine bag is made of a deformable flexible material and is arranged at the outer periphery of the medicine compress conical cavity. When the medicine compress conical cavity is filled with medicine, it expands into a shape that matches the human body. The medicine bag is arranged on the sleeve assembly and is connected with the medicine compress conical cavity. The medicine in the medicine storage cavity enters the medicine compress conical cavity and the medicine bag in turn.

[0042] In the present invention, the above-mentioned compress conical cavity and compress bag form a drug application part, which makes the drug application part more adaptable to the patient's position. Moreover, the above-mentioned compress conical cavity is made of elastic material, which is convenient for medical workers to insert the deep pipeline injection head. In addition, the compress bag is made of flexible material, which allows the compress bag to expand into an appropriate shape, better fit the patient's position, and ensure the drug application effect. Furthermore, since the flexible material compress bag can completely fit the patient's area to be applied in any shape, it can achieve complete application of the medicine without missing any area.

[0043] 4. In a further improvement, the deep channel injection head for a living body provided by the present invention is provided with a limiting balloon at the end of the conical cavity for applying the medicine, and the limiting balloon is used to prevent the medicine from overflowing the target range of the medicine application. The limiting balloon can effectively limit and fix the deep channel injection head, ensuring that the deep channel injection head will not move out of the patient's body during the medicine application process.

[0044] 5. In a further improvement, the deep channel injection head for a biological body provided by the present invention is provided with a filling liquid receiving chamber for receiving a filling liquid in the conical cavity of the compress, and the filling liquid receiving chamber is connected with the limiting balloon;

[0045] A push rod is provided at one end of the medicine pushing rod facing the medicine applying conical cavity, and the push rod is telescopically arranged in the filling liquid holding cavity; when the medicine pushing rod pushes medicine, the push rod pushes the filling liquid into the limiting balloon to expand the limiting balloon; when the medicine pushing rod is reset and retracted, the filling liquid in the limiting balloon flows back into the filling liquid holding cavity.

[0046] In the present invention, a filling liquid chamber is provided in the compress conical cavity, and the pushing rod on the medicine pushing rod is telescopically moved, so that the filling liquid is filled into or discharged from the limiting balloon, so as to realize the expansion and retraction of the limiting balloon. The above structure occupies little space and is stable and reliable.

[0047] 6. In a further improvement, the present invention provides a deep channel drug injection head for a biological body, wherein the drug pushing rod is provided with a push rod accommodating groove extending along its length direction for accommodating the push rod; the push rod is embedded in the push rod accommodating groove to increase the drug pushing distance of the drug pushing rod.

[0048] In the present invention, a push rod receiving groove is provided in the length direction of the medicine pushing rod. The push rod is embedded in the push rod receiving groove, which can effectively increase the moving distance of the medicine pushing rod during the medicine pushing process, thereby pushing more medicine in the medicine storage cavity into the medicine applying part, avoiding medicine waste while ensuring the medicine applying effect.

[0049] 7. In a further improvement, the present invention provides a deep channel injection head for a biological body, wherein the outer sleeve is driven to slide on the inner sleeve; when the outer sleeve is driven to move toward the medication application portion, the opening and closing assembly gradually opens; when the outer sleeve is driven to move away from the medication application portion, the opening and closing assembly gradually folds.

[0050] The folding and opening actions of the opening and closing assembly are realized by driving the outer sleeve, which has the advantages of simple structure, convenient for operators to push and pull the outer sleeve, and simple operation.

[0051] 7. In addition, the present invention also provides a drug injector, comprising: the aforementioned deep channel drug injector head for a living body, and accordingly, it has all the advantages of the deep channel drug injector head.

[0052] 8. In addition, the present invention also provides a method for using the deep pipeline injection head, which is used to use the deep pipeline injection head, including:

[0053] Extending the deep channel injection head into the body of the organism to be treated;

[0054] The outer sleeve and the inner sleeve move relative to each other in one direction, and the inner connecting rod and the outer connecting rod are opened in a coordinated manner to prop up the drug application part to a suitable position for drug application;

[0055] The medicine pushing rod is pushed 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;

[0056] The medicine in the medicine storage cavity 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;

[0057] The outer sleeve and the inner sleeve move relative to each other in another direction, and the inner connecting rod and the outer connecting rod are linked and close to the sleeve assembly, so that the deep pipeline injection head can be extended into the biological body.

[0058] In the present invention, the use method of the above-mentioned injection head can enable medical workers to simply and conveniently apply medicines to the patient's affected area, effectively solving the difficulties in applying medicines to deep channels of biological bodies in the prior art, which is heavily dependent on the technical level of medical workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] 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:

[0060] Figure 1 The schematic diagram shows the structure of the deep pipeline injection head in the drug application state according to the preferred embodiment 1 of the present invention;

[0061] Figure 2 The schematic diagram shows the state of the medicine bag of the deep channel medicine injection head when the medicine is not squeezed according to the preferred embodiment 1 of the present invention;

[0062] Figure 3 The schematic diagram of the structure of a medicine pushing rod embedded with a push rod according to Embodiment 2 of the present invention is shown schematically.

[0063] Description of reference numerals:

[0064] 1-drug application part; 2-sleeve assembly; 3-outer sleeve; 4-inner sleeve; 5-outer sleeve fixing part; 6-opening and closing assembly; 7-outer connecting rod; 8-inner connecting rod; 9-inner sleeve fixing part; 10-drug pushing rod; 11-drug storage cavity; 12-drug application conical cavity; 13-drug application bag; 14-filling liquid storage cavity; 15-limiting balloon; 16-push rod; 17-push rod storage groove; 18-perforated soft film; 19-sealed soft film.

[0065] 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

[0066] 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.

[0067] Example 1

[0068] <Deep Pipeline Injection Head Preferred Embodiment 1>

[0069] Figure 1 The schematic diagram of the structure of the deep pipeline injection head in the drug application state according to the preferred embodiment of the present invention is schematically shown. Figure 2The figure schematically shows the state of the medicine bag of the deep channel injection head when the medicine is not squeezed out according to the preferred embodiment of the present invention.

[0070] like Figure 1 and Figure 2 As shown, a deep channel injection head for a biological body according to a preferred embodiment of the present invention comprises:

[0071] A drug application part 1, wherein the drug application part 1 is used to apply the drug to a target part of a biological body;

[0072] The casing assembly 2 comprises: an outer casing 3 and an inner casing 4 which are sleeved and connected to each other;

[0073] The opening and closing assembly 6 comprises: an outer connecting rod 7 and an inner connecting rod 8, wherein the inner connecting rod 8 is hingedly fixed to the inner sleeve fixing portion 9 of the inner sleeve 4 near the head; the outer connecting rod 7 is hingedly fixed to the outer sleeve fixing portion 5 at the head end of the outer sleeve 3, and the opening and closing assembly 6 is used to support the drug application part 1 for drug application; the outer sleeve 3 and the inner sleeve 4 are relatively displaced so that the opening and closing assembly 6 can realize folding and opening actions, and the instrument delivery radius of the deep pipeline injection head is reduced when folding, and the drug application part 1 is opened when opening. to the appropriate position and closely fit the human tissue; when the opening and closing component 6 is in the open state, the outer sleeve 3 and the inner sleeve 4 move relative to each other in one direction, and the inner connecting rod 8 and the outer connecting rod 7 are opened in a coordinated manner to open the drug application part 1 to the appropriate position for drug application; when the opening and closing component 6 is in the folded state, the outer sleeve 3 and the inner sleeve 4 move relative to each other in another direction, and the inner connecting rod 8 and the outer connecting rod 7 are coordinated and close to the sleeve component 2, so that the deep pipeline injection head can be extended into the biological body; specifically, Figure 1 and Figure 2 As shown, the outer sleeve 3 is driven to slide on the inner sleeve 4; when the outer sleeve 3 is driven to move toward the medication application part 1, the opening and closing assembly 6 gradually opens; when the outer sleeve 3 is driven to move away from the medication application part 1, the opening and closing assembly 6 gradually folds.

[0074] The medicine pushing rod 10, the inner cavity of the inner sleeve 4 is a medicine storage cavity 11 for accommodating medicine, the medicine applying part 1 is connected with the medicine storage cavity 11 and a medicine outlet channel is arranged on the surface of the medicine applying part 1; the medicine pushing rod 10 is driven and slidably arranged in the medicine storage cavity 11, and is used to squeeze the medicine into the medicine applying part 1 and overflow from the medicine outlet channel.

[0075] In this embodiment, if Figure 1 As shown, the drug dispensing unit 1 comprises:

[0076] The medicine compressing conical cavity 12 is made of elastic material. When the medicine compressing conical cavity 12 is filled with medicine, it expands into a cone shape. The medicine compressing conical cavity 12 is located in the middle of the sleeve assembly 2.

[0077] The compress bag 13 is a deformable flexible material and is arranged at the periphery of the compress conical cavity 12. The compress bag 13 includes: a perforated soft film 18 facing the human tissue side and a closed soft film 19 away from the human tissue and connected with the opening and closing component 6; the perforated soft film 18 and the closed soft film 19 are tightly connected to form the compress bag 13. When the compress conical cavity 12 is filled with medicine, it expands into a shape that matches the human body; the compress bag 13 is arranged on the sleeve component 2 and is connected to the compress conical cavity 12, and the medicine in the medicine storage cavity 11 enters the compress conical cavity 12 and the compress bag 13 in turn.

[0078] In addition, in this embodiment, in order to prevent the drug from overflowing the target range of medication. A limiting balloon 15 is also provided at the end of the medication cone cavity 12. A filling liquid chamber 14 for accommodating filling liquid is provided in the medication cone cavity 12, and the filling liquid chamber 14 is connected with the limiting balloon 15; a push rod 16 is provided at one end of the medication pushing rod 10 facing the medication cone cavity 12, and the push rod 16 is telescopically arranged in the filling liquid chamber 14; the push rod 16 is located at the central axis position of the medication pushing rod 10, and when the medication pushing rod 10 pushes the medicine, the push rod 16 pushes the filling liquid into the limiting balloon 15 to expand the limiting balloon 15; when the medication pushing rod 10 is reset and retracted, the filling liquid in the limiting balloon 15 flows back into the filling liquid chamber 14.

[0079] Of course, in this embodiment, the medical staff does not specifically limit the driving object of the relatively moving outer sleeve 3 and inner sleeve 4. In other embodiments, the medical staff can also drive the inner sleeve 4, which is driven to slide on the outer sleeve 3, to achieve the folding and opening action of the opening and closing component 6.

[0080] Example 2

[0081] <Deep Pipeline Injection Head Preferred Embodiment 2>

[0082] A deep channel injection head for a biological body according to a preferred embodiment of the present invention comprises:

[0083] A drug application part 1, wherein the drug application part 1 is used to apply the drug to a target part of a biological body;

[0084] The casing assembly 2 comprises: an outer casing 3 and an inner casing 4 which are sleeved and connected to each other;

[0085] The opening and closing assembly 6 comprises: an outer connecting rod 7 and an inner connecting rod 8, wherein the inner connecting rod 8 is hingedly fixed to the inner sleeve fixing portion 9 of the inner sleeve 4 near the head; the outer connecting rod 7 is hingedly fixed to the outer sleeve fixing portion 5 at the head end of the outer sleeve 3, and the opening and closing assembly 6 is used to support the drug application part 1 to apply drugs; the outer sleeve 3 and the inner sleeve 4 are relatively displaced so that the opening and closing assembly 6 can realize folding and opening actions, and the instrument delivery radius of the deep pipeline injection head is reduced when folding, and the drug application part 1 is opened to a proper position and closely fits the human tissue when opening;

[0086] The medicine pushing rod 10, the inner cavity of the inner sleeve 4 is a medicine storage cavity 11 for accommodating medicine, the medicine applying part 1 is connected with the medicine storage cavity 11 and a medicine outlet channel is arranged on the surface of the medicine applying part 1; the medicine pushing rod 10 is driven and slidably arranged in the medicine storage cavity 11, and is used to squeeze the medicine into the medicine applying part 1 and overflow from the medicine outlet channel.

[0087] like Figure 3 The schematic diagram of the medicine pushing rod structure with a push rod embedded therein is shown. The medicine pushing rod 10 is provided with a push rod receiving groove 17 extending along the length direction thereof for receiving the push rod 16; the push rod 16 is embedded in the push rod receiving groove 17 to increase the medicine pushing distance of the medicine pushing rod 10. By embedding the push rod 16 in the push rod receiving groove 17, the moving distance of the medicine pushing rod 10 during the medicine pushing process can be effectively increased, thereby pushing more medicine in the medicine storage cavity 11 into the medicine applying part 1, avoiding medicine waste while ensuring the medicine applying effect.

[0088] <Method Example>

[0089] Figure 1 The schematic diagram of the structure of the deep pipeline injection head in the drug application state according to the preferred embodiment of the present invention is schematically shown. Figure 2 The schematic diagram of the structure of the deep pipeline injection head in the contracted state according to the preferred embodiment of the present invention is schematically shown.

[0090] A method for using a deep channel injection head, used for using the deep channel injection head for a living body in Example 1 and Example 2, comprising:

[0091] The first step S1 is to insert the deep channel injection head into the body to be treated;

[0092] In the second step S2, the outer sleeve 3 and the inner sleeve 4 are moved relative to each other in one direction, and the inner connecting rod 8 and the outer connecting rod 7 are opened in a coordinated manner to open the drug application part 1 to a suitable position for drug application;

[0093] The third step S3 is to push the medicine push rod 10 to press the medicine into the medicine application part 1, and the medicine overflows from the medicine outlet channel on the surface of the medicine application part 1 and is applied to the patient's affected part;

[0094] The medicine in the medicine storage cavity 11 enters the medicine compressing conical cavity 12 and the medicine compressing bag 13 in sequence, and the medicine compressing bag 13 is filled with medicine and expands into a shape that is compatible with the human body;

[0095] In the fourth step S4, the outer sleeve 3 and the inner sleeve 4 are moved relative to each other in another direction, and the inner connecting rod 8 and the outer connecting rod 7 are linked and close to the sleeve assembly 2, so that the deep pipeline injection head can be inserted into the biological body.

[0096] 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.

[0097] 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 deep channel injection head for a biological body, characterized in that: include: A drug application part (1), the drug application part (1) is used to apply the drug to a target part of a biological body; The sleeve assembly (2) comprises: an outer sleeve (3) and an inner sleeve (4) which are sleeved and slidably connected to each other; The opening and closing assembly (6) comprises: an outer connecting rod (7) and an inner connecting rod (8), wherein the inner connecting rod (8) is hingedly fixed to an inner sleeve fixing portion (9) of the inner sleeve (4) near the head; the outer connecting rod (7) is hingedly fixed to an outer sleeve fixing portion (5) at the head end of the outer sleeve (3), and the opening and closing assembly (6) is used to support the drug application portion (1) for drug application; the outer sleeve (3) and the inner sleeve (4) are relatively displaced so that the opening and closing assembly (6) can achieve folding and opening actions, and when folding, the instrument delivery radius of the deep pipeline drug injection head is reduced, and when opening, the drug application portion (1) is opened to an appropriate position and closely fits human tissue; When the opening and closing assembly (6) is in an open state, the outer sleeve (3) and the inner sleeve (4) are mutually moved in one direction, and the inner connecting rod (8) and the outer connecting rod (7) are opened in a coordinated manner, so as to open the drug application part (1) to an appropriate position for drug application; when the opening and closing assembly (6) is in a folded state, the outer sleeve (3) and the inner sleeve (4) are mutually moved in another direction, and the inner connecting rod (8) and the outer connecting rod (7) are linked and close to the sleeve assembly (2), so as to facilitate the deep pipeline injection head to extend into the biological body.

2. The deep channel injection head for a living body according to claim 1, characterized in that: Also includes: A medicine pushing rod (10), the inner cavity of the inner sleeve (4) is a medicine storage cavity (11) for accommodating medicine, the medicine application part (1) is connected to the medicine storage cavity (11) and a medicine outlet channel is arranged on the surface of the medicine application part (1); the medicine pushing rod (10) is driven to slide in the medicine storage cavity (11) and is used to squeeze the medicine into the medicine application part (1) and overflow from the medicine outlet channel.

3. The deep channel injection head for a living body according to claim 2, characterized in that: The drug dispensing unit (1) comprises: The compress conical cavity (12) is made of elastic material and is in the shape of a specific elastic cone; the compress conical cavity (12) is located in the middle of the sleeve assembly (2); The compress bag (13) is made of a deformable flexible material and is arranged at the periphery of the compress conical cavity (12). When the compress conical cavity (12) is filled with medicine, it expands into a shape that matches the human body. The compress bag (13) is arranged on the sleeve assembly (2) and is connected to the compress conical cavity (12). The medicine in the medicine storage cavity (11) enters the compress conical cavity (12) and the compress bag (13) in sequence. The compress bag (13) comprises: a perforated soft membrane (18) facing the human tissue side and a closed soft membrane (19) away from the human tissue and connected to the opening and closing assembly (6). The perforated soft membrane (18) and the closed soft membrane (19) are tightly connected to form the compress bag (13).

4. The deep channel injection head for a living body according to claim 3, characterized in that: A limiting balloon (15) is also provided at the end of the medicine application conical cavity (12), and the limiting balloon (15) is used to prevent the medicine from overflowing from the target range of medicine application.

5. The deep channel injection head for a living body according to claim 4, characterized in that: A filling liquid receiving chamber (14) for receiving a filling liquid is arranged in the compress conical chamber (12), and the filling liquid receiving chamber (14) is in communication with the limiting balloon (15); A push rod (16) is provided at one end of the medicine pushing rod (10) facing the medicine applying conical cavity (12), and the push rod (16) is telescopically arranged in the filling liquid chamber (14); when the medicine pushing rod (10) pushes medicine, the push rod (16) pushes the filling liquid into the limiting balloon (15) to expand the limiting balloon (15); when the medicine pushing rod (10) is reset and retracted, the filling liquid in the limiting balloon (15) flows back into the filling liquid chamber (14).

6. The deep channel injection head for a living body according to claim 5, characterized in that: The medicine pushing rod (10) is provided with a push rod accommodating groove (17) extending along its length direction and used to accommodate the push rod (16); the push rod (16) is embedded in the push rod accommodating groove (17) to increase the medicine pushing distance of the medicine pushing rod (10).

7. The deep channel injection head for a living body according to claim 1, characterized in that: The outer sleeve (3) is driven to slide on the inner sleeve (4); when the outer sleeve (3) is driven to move toward the medicine applying portion (1), the opening and closing component (6) gradually opens; when the outer sleeve (3) is driven to move away from the medicine applying portion (1), the opening and closing component (6) gradually folds.

8. The deep channel injection head for a living body according to claim 1, characterized in that: The inner sleeve (4) is driven to slide on the outer sleeve (3) to achieve the folding and opening actions of the opening and closing assembly (6).

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

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