CN211659041U - Intestinal submucosal injection device - Google Patents
Intestinal submucosal injection device Download PDFInfo
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- CN211659041U CN211659041U CN201921859753.2U CN201921859753U CN211659041U CN 211659041 U CN211659041 U CN 211659041U CN 201921859753 U CN201921859753 U CN 201921859753U CN 211659041 U CN211659041 U CN 211659041U
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Abstract
The utility model provides an intestinal submucosal injection device, which comprises a control catheter, an expandable part arranged at the front end of the control catheter, an injection device arranged outside the expandable part and a pneumatic device matched with the injection device; the utility model discloses an injection device under intestinal mucosa is equipped with control conduit and expandable part, is convenient for bring the injection device arranged outside the expandable part into the specified position of intestinal tract according to the needs, greatly improves the convenience of medicine injection, and improves the controllability of the medicine injection depth; simultaneously, injection apparatus is equipped with a plurality of miniature injection devices, and miniature injection device evenly sets up in the expanded part outside, and pneumatic means cooperatees with miniature injection device and can injects simultaneously to the mucous membrane multiple spot, has improved injection efficiency greatly, has alleviateed patient's misery, and pneumatic means and miniature injection device are convenient for control simultaneously, have avoided the medicine to inject too much and have leaded to the mucous membrane necrosis.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to an injection apparatus under intestinal mucosa.
Background
Intestinal submucosa injection is a novel administration route, and can be used for locally injecting chemotherapeutics, islet transplantation and other grafts, insulin, anti-scarring medicaments, sclerosing agents, developers and the like. The injection has no pain, is not digested by intestinal tract, and can directly reach liver. The injectables can be sustained release formulations. At present, the submucosal injection mode mainly comprises the following steps: (1) injecting with a mucous membrane injection needle under a colonoscope; (2) injection was performed under direct vision through the anoscope.
However, the existing injection mode has limited local injection dosage, mucosa necrosis easily occurs when too much medicine is injected, if more medicine needs to be injected, multiple points are needed for repeated injection, and the efficiency is low; meanwhile, the injection depth of the medicine is unstable and cannot be controlled.
Disclosure of Invention
The utility model provides an injection device under intestinal mucosa for solving the technical problems.
The utility model adopts the technical proposal that: an intestinal submucosal injection device is characterized by comprising a control catheter, an expandable part arranged at the front end of the control catheter, an injection device arranged at the outer side of the expandable part and a pneumatic device matched with the injection device;
the injection device comprises a plurality of miniature injection devices which are uniformly arranged on the outer side of the expandable part, and a first tube cavity communicated with the expandable part and a second tube cavity communicated with the pneumatic device are arranged in the control conduit.
Furthermore, the micro injection device comprises an injection needle cylinder with one end arranged at the outer side of the expandable part and a needle discharging device arranged in the injection needle cylinder, the needle discharging device comprises an injection needle base movably arranged in the injection needle cylinder and an injection needle arranged at one side of the injection needle base far away from the expandable part, a side hole is formed at one end of the injection needle close to the injection needle base, a plurality of vent holes are formed in the side wall of the injection needle cylinder between the injection needle base and the expandable part, and a plurality of medicine injection holes are formed in the side wall of one end of the injection needle far away from the expandable part;
the pneumatic device comprises an air supply part and a medicine supply part, the air supply part is communicated with the injection needle cylinder through a vent hole, and the medicine supply part is communicated with the injection needle cylinder through a medicine injection hole;
the second lumen comprises a gas supply lumen communicated with the gas supply component and a medicine supply lumen communicated with the medicine supply component.
Further, the air feed part is established for the cover and is established the play needle gasbag outside the expandable unit, the medicine supply part is established the injection gasbag outside the play needle gasbag for the cover, injection cylinder injection end passes play needle gasbag and injection gasbag in proper order, the play needle gasbag is linked together through air vent and injection cylinder, the injection gasbag is linked together through injection hole and injection cylinder.
Furthermore, still be equipped with the limit valve in the injection cylinder, the limit valve sets up and is close to expandable unit one side at the injection hole, the syringe needle base slides and sets up and is close to expandable unit one side at the injection cylinder.
Furthermore, a connecting spring is arranged between the limiting valve and the injection needle base.
Furthermore, a rubber sealing sheet is arranged at the needle outlet end of the injection needle cylinder.
Further, a guide wire lumen is arranged in the control catheter or outside the control catheter.
Further, the expandable member includes an inner elastic member and an outer elastic member disposed outside the inner elastic member, the outer elastic member having an elasticity smaller than that of the inner elastic member, and the micro injection device is disposed outside the outer elastic member.
Further, go out and be equipped with a plurality of elastic separation spare between needle gasbag and the outer elastic component, elastic separation spare sets up along outer elastic component axial, and will go out the needle gasbag and separate into a plurality of little air feed cavities, the air feed lumen includes a plurality of and air feed cavity matched with air feed passageway.
The utility model has the advantages and positive effects that: the utility model discloses an injection device under intestinal mucosa is equipped with control conduit and expandable part, is convenient for bring the injection device arranged outside the expandable part into the specified position of intestinal tract according to the needs, greatly improves the convenience of medicine injection, and improves the controllability of the medicine injection depth; simultaneously, injection apparatus is equipped with a plurality of miniature injection devices, and miniature injection device evenly sets up in the expanded part outside, and pneumatic means cooperatees with miniature injection device and can injects simultaneously to the mucous membrane multiple spot, has improved injection efficiency greatly, has alleviateed patient's misery, and pneumatic means and miniature injection device are convenient for control simultaneously, have avoided the medicine to inject too much and have leaded to the mucous membrane necrosis.
In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems solved by the present invention, other technical features included in the technical solutions, and advantages brought by the technical features will be further described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of an intestinal submucosal injection device according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a micro-injection device provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of a pneumatic device and a second tube cavity structure provided by the embodiment of the invention;
fig. 4 is a schematic structural diagram of a limiting valve provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of a connection spring according to an embodiment of the present invention;
FIG. 6 is a schematic view of a rubber sealing piece provided by an embodiment of the present invention;
fig. 7 is a schematic view of a guidewire lumen provided by an embodiment of the present invention;
fig. 8 is a cross-sectional view a-a of fig. 7 in accordance with an embodiment of the present invention;
fig. 9 is a schematic view of an elastic separator provided in an embodiment of the present invention;
fig. 10 is a cross-sectional view B-B of fig. 7 according to an embodiment of the present invention.
In the figure: 1a control catheter; 2 an expandable member; 210 an inner layer elastic member; 220 an outer layer elastic member; 3 an injection device; 310 a micro-injection device; 311 syringe cylinder; 311a vent hole; 311b medicine injection holes; 312 needle withdrawing means; 312a needle base; 312b injection needle; 312b1 side hole; 4, a pneumatic device; 410 an air supply part; 420 a drug delivery component; 5 a first lumen; 6 a second lumen; 610 a gas supply lumen; 611 air supply channel; 620 a drug delivery lumen; 7, a limit valve; 8, connecting a spring; 9, a rubber sealing sheet; 10 a guidewire lumen; 11 resilient spacer
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, the intestinal submucosal injection device is characterized by comprising a control catheter 1, an expandable part 2 arranged at the front end of the control catheter 1, an injection device 3 arranged outside the expandable part 2 and a pneumatic device 4 matched with the injection device 3;
the injection device 3 comprises a plurality of micro injection devices 310 uniformly arranged on the outer side of the expandable part 2, and a first lumen 5 communicated with the expandable part 2 and a second lumen 6 communicated with the pneumatic device 4 are arranged in the control catheter 1.
In this embodiment, control pipe 1 and expandable component 2 are the basic part of injection device 3 under the intestinal mucosa, have the direction and bear the weight of the effect, and injection device 3 and pneumatic means 4 are the key component of injection device 3 under the intestinal mucosa, and control pipe 1 and expandable component 2 cooperate portable injection device 3 and get into the intestinal assigned position, have improved the convenience of medicine injection greatly to and the controllability of medicine injection depth.
In this embodiment, injection device 3 is equipped with a plurality of miniature injection device 310, and miniature injection device 310 evenly sets up in the expandable part 2 outside, and pneumatic means 4 cooperatees with miniature injection device 310 and can inject the mucous membrane multiple spot simultaneously, has improved injection efficiency greatly, has alleviateed patient's misery, and pneumatic means 4 and miniature injection device 310 are convenient for control simultaneously, have avoided the medicine to inject too much and have leaded to the mucous membrane necrosis.
In this embodiment, a first lumen 5 and a second lumen 6 are arranged in the control catheter 1, the first lumen 5 is communicated with the expandable part 2, the second lumen 6 is communicated with the pneumatic device 4, during injection, the control catheter 1 and the expandable part 2 are matched to bring the pneumatic device 4 and the micro injection device 310 into an intestinal specified position, the first lumen 5 inflates the expandable part 2 through an external air supply mechanism, so that the injection device 3 arranged outside the expandable part 2 is in close contact with intestinal mucosa, the external administration device starts the pneumatic device 4 through the second lumen 6, and further the micro injection device 310 is controlled to inject and administer the intestinal mucosa.
As shown in fig. 2 and 3, in a preferred embodiment, the micro-injection device 310 includes a syringe 311 having one end disposed outside the expandable member 2 and a needle output device 312 disposed inside the syringe 311, the needle output device 312 includes a needle base 312a movably disposed inside the syringe 311 and a needle 312b disposed on a side of the needle base 312a away from the expandable member 2, the needle 312b has a side hole 312b1 near one end of the needle base 312a, a plurality of vent holes 311a are disposed on a sidewall of the syringe 311 between the needle base 312a and the expandable member 2, and a plurality of injection holes 311b are disposed on a sidewall of the syringe 311 away from the expandable member 2;
the pneumatic device 4 comprises an air supply component 410 and a medicine supply component 420, wherein the air supply component 410 is communicated with the injection syringe 311 through an air vent 311a, and the medicine supply component 420 is communicated with the injection syringe 311 through a medicine injection hole 311 b;
the second lumen 6 includes a gas supply lumen 610 communicating with the gas supply part 410 and a medicine supply lumen 620 communicating with the medicine supply part 420.
In this embodiment, the micro-injection device 310 is provided with a syringe 311 and a needle discharging device 312, wherein one end of the syringe 311 is a fixed end, and the other end is a needle discharging end, and the syringe 311 is fixedly disposed on the outer side of the expandable member 2 through the fixed end, in this embodiment, the needle discharging device 312 is disposed in the syringe 311, the needle discharging device 312 is provided with a needle base 312a and a needle 312b, the needle base 312a is movably disposed in the syringe 311, the needle 312b is disposed on the side of the needle base 312a away from the expandable member 2, i.e. the side close to the needle discharging end of the syringe 311, one end of the needle 312b close to the needle base 312a is provided with a side hole 312b1, the syringe 311 between the needle base 312a and the expandable member 2 is provided with a plurality of vent holes 311a, and the side wall of the needle discharging end of the syringe, the pneumatic device 4 is provided with an air supply component 410 and a medicine supply component 420, the air supply component 410 is communicated with the injection needle cylinder 311 through a vent hole 311a so as to control the movement of the injection needle base 312a in the injection needle cylinder 311, the medicine supply component 420 is communicated with the injection needle cylinder 311 through a medicine injection hole 311b, during injection, the air supply component 410 supplies air to the injection needle cylinder 311 through the vent hole 311a, the injection needle base 312a moves to the injection end under the pushing of air pressure and pierces the needle outlet end of the injection needle cylinder 311 to penetrate into the intestinal mucosa, meanwhile, the medicine supply component 420 supplies medicine to the injection needle cylinder 311 through the medicine injection hole 311b, and the medicine enters the injection needle 312b through a side hole 312b1 on the injection needle 312b so as to supply medicine to the intestinal mucosa.
In this embodiment, the second lumen 6 is provided with a gas supply lumen 610 communicated with the gas supply component 410 and a drug supply lumen 620 communicated with the drug supply component 420, so that the gas supply component 410 and the drug supply component 420 are communicated with an external drug delivery device, and in this embodiment, the drug delivery device is provided with a gas supply device communicated with the gas supply lumen 610 and a drug supply device communicated with the drug supply lumen 620.
In a preferred embodiment, the gas supply component 410 is a needle outlet air bag sleeved outside the expandable component 2, the medicine supply component 420 is a medicine injection air bag sleeved outside the needle outlet air bag, the injection end of the injection needle cylinder 311 sequentially passes through the needle outlet air bag and the medicine injection air bag, the needle outlet air bag is communicated with the injection needle cylinder 311 through a vent hole 311a, and the medicine injection air bag is communicated with the injection needle cylinder 311 through a medicine injection hole 311 b.
In this embodiment, the air supply component 410 and the medicine supply component 420 are air bags, which are respectively an injection air bag and a medicine injection air bag, the medicine injection air bag is sleeved outside the injection air bag, the injection end of the injection needle cylinder 311 sequentially penetrates through the injection air bag and the medicine injection air bag, the injection air bag is communicated with the injection needle cylinder 311 through the vent hole 311a, the medicine injection air bag is communicated with the injection needle cylinder 311 through the medicine injection hole 311b, and during injection, the injection air bag and the medicine injection air bag are matched to facilitate fixing the injection needle cylinder 311, thereby facilitating the micro-injection device 310 to rapidly inject medicine through injection.
In a preferred embodiment, as shown in fig. 4, a limiting valve 7 is further disposed in the syringe 311, the limiting valve 7 is disposed at the side of the drug injection hole 311b close to the expandable member 2, and the needle base 312a is slidably disposed at the side of the syringe 311 close to the expandable member 2. In this embodiment, a limiting valve 7 is disposed in the syringe 311, the limiting valve 7 is disposed on a side of the injection hole 311b close to the expandable component 2, the limiting valve 7 is a limiting structure in which the needle base 312a moves in the syringe 311, the needle base 312a can slide between a fixed end of the syringe 311 and the limiting valve 7, and the limiting valve 7 prevents the needle base 312a from rapidly moving to the injection end of the syringe 311 due to excessive air pressure, so that the injection hole 311b, the syringe 311 and the lateral hole 312b1 of the needle 312b cannot form a passage and further cannot inject medicine, in this embodiment, the limiting valve 7 is a sealing member cooperating with the needle 312b, when injecting, the needle base 312a moves to the needle outlet end of the syringe 311 under the action of the air pressure and sequentially passes through the limiting valve 7 and the needle outlet end of the syringe 311 to enter the intestinal mucosa, and when the needle base 312a moves to the position of the limiting valve 7, the side hole 312b1 on the injection needle 312b enters into the cavity formed by the limit valve 7 and the injection end of the injection needle cylinder 311 and forms a passage with the drug injection hole 311b arranged on the side wall of the injection needle cylinder 311, so that the drug can enter into the side hole 312b1 of the injection needle 312b through the drug injection hole 311b and the injection needle cylinder 311, and then the drug can be injected into the intestinal mucosa.
In a preferred embodiment, as shown in fig. 5, a connecting spring 8 is provided between the limit valve 7 and the needle mount 312 a. In this embodiment, be equipped with between limit valve 7 and the syringe needle base 312a and connect spring 8, after the medicine injection of being convenient for is accomplished, the needle is taken out fast, in this embodiment, after the medicine injection is accomplished, air feed part 410 is taken back to the suction for produce the negative pressure in syringe 311 between syringe needle base 312a and the extensible part 2, under negative pressure and the pull force dual function of connecting spring 8, syringe needle 312b resets fast, has improved injection efficiency greatly.
In a preferred embodiment, as shown in fig. 6, the needle outlet end of the syringe 311 is provided with a rubber sealing sheet 9. In this embodiment, the needle outlet end of the syringe 311 is provided with a rubber sealing piece 9, and the rubber sealing piece 9 facilitates the rapid puncture of the injection needle 312b, which is helpful for the rapid administration of the micro-injection device 310.
In a preferred embodiment, as shown in fig. 7, a guide wire lumen 10 is provided in the control catheter 1 or outside the control catheter 1. In this embodiment, the guide wire lumen 10 is provided in the control catheter 1 or outside the control catheter 1, so that a guide wire can be conveniently provided in the guide wire lumen 10 as required, and the use of the control catheter 1 is expanded.
In a preferred embodiment, as shown in fig. 8, the expandable member 2 comprises an inner elastic member 210 and an outer elastic member 220 disposed outside the inner elastic member 210, the outer elastic member 220 having elasticity less than that of the inner elastic member 210, and the micro injection device 310 is disposed outside the outer elastic member 220.
In this embodiment, the expandable member 2 is provided with an inner layer elastic member 210 and an outer layer elastic member 220, the inner layer elastic member 210 is a main expanding member of the expandable member 2, the outer layer elastic member 220 is a shaping member of the expandable member 2, and the elasticity of the outer layer elastic member 220 is smaller than that of the inner layer elastic member 210, so that the shape of the inner layer elastic member 210 can be fixed by the outer layer elastic member 220, and the shape of the micro injection device 310 arranged outside the outer layer elastic member 220 can be stabilized, thereby facilitating the injection of the drug in the intestinal mucosa.
As shown in fig. 9 and 10, in a preferred embodiment, a plurality of elastic partitions 11 are disposed between the needle-out air bag and the outer layer elastic member 220, the elastic partitions 11 are axially disposed along the outer layer elastic member 220 and divide the needle-out air bag into a plurality of small air supply chambers, and the air supply lumen 610 includes a plurality of air supply channels 611 matched with the air supply chambers.
In this embodiment, be equipped with a plurality of elastic separation pieces 11 between needle gasbag and outer elastic component 220, elastic separation piece 11 sets up along outer elastic component 220 axial, separate into a plurality of little air feed cavities with the needle gasbag, in this embodiment, the air supply pipe is equipped with a plurality of air feed channels 611, air feed channel 611 is corresponding with each little air feed cavity, during the injection, can select corresponding air feed channel 611 to supply air according to intestinal mucosa focus position, and then corresponding air feed cavity and miniature injection device 310 cooperate and carry out the injection of medicine to intestinal mucosa focus, the accuracy of the 3 injections of this injection device has been improved greatly.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equal changes and improvements made within the scope of the utility model should still be included within the patent coverage of the utility model.
Claims (9)
1. An intestinal submucosal injection device is characterized by comprising a control catheter (1), an expandable part (2) arranged at the front end of the control catheter (1), an injection device (3) arranged at the outer side of the expandable part (2) and a pneumatic device (4) matched with the injection device (3);
the injection device (3) comprises a plurality of miniature injection devices (310) which are uniformly arranged on the outer side of the expandable part (2), and a first tube cavity (5) communicated with the expandable part (2) and a second tube cavity (6) communicated with the pneumatic device (4) are arranged in the control conduit (1).
2. The submucosal injection apparatus according to claim 1, wherein said micro-injection device (310) comprises a syringe (311) having one end disposed outside the expandable member (2) and a needle-withdrawing device (312) disposed inside the syringe (311), the needle outlet device (312) comprises an injection needle base (312a) movably arranged in the injection needle cylinder (311) and an injection needle (312b) arranged on one side of the injection needle base (312a) far away from the expandable part (2), a side hole (312b1) is arranged at one end of the injection needle (312b) close to the injection needle base (312a), a plurality of vent holes (311a) are arranged on the side wall of the injection syringe (311) between the injection needle base (312a) and the expandable part (2), a plurality of medicine injection holes (311b) are formed in the side wall of one end, far away from the expandable component (2), of the injection syringe (311);
the pneumatic device (4) comprises an air supply part (410) and a medicine supply part (420), the air supply part (410) is communicated with the injection needle cylinder (311) through a vent hole (311a), and the medicine supply part (420) is communicated with the injection needle cylinder (311) through a medicine injection hole (311 b);
the second lumen (6) comprises a gas supply lumen (610) communicated with the gas supply part (410) and a medicine supply lumen (620) communicated with the medicine supply part (420).
3. The intestinal submucosal injection apparatus according to claim 2, wherein, the gas supply part (410) is a needle-out airbag covering the outside of the expandable part (2), the medicine supply part (420) is a medicine injection airbag covering the outside of the needle-out airbag, the injection end of the injection syringe (311) passes through the needle-out airbag and the medicine injection airbag in turn, the needle-out airbag is communicated with the injection syringe (311) through a vent hole (311a), and the medicine injection airbag is communicated with the injection syringe (311) through a medicine injection hole (311 b).
4. A device according to claim 3, wherein a limiting valve (7) is further provided in the syringe (311), the limiting valve (7) is provided at the side of the drug injection hole (311b) close to the expandable member (2), and the needle base (312a) is slidably provided at the side of the syringe (311) close to the expandable member (2).
5. An injection device under intestinal mucosa according to claim 4, characterized in that a connecting spring (8) is arranged between the limit valve (7) and the needle base (312 a).
6. An injection device under intestinal mucosa according to claim 5, characterized in that the needle outlet end of the syringe (311) is provided with a rubber sealing sheet (9).
7. The intestinal submucosal injection apparatus according to claim 6, wherein a guidewire lumen (10) is provided in the control catheter (1) or outside the control catheter (1).
8. The submucosal injection apparatus for the intestinal tract according to claim 7, wherein said expandable member (2) includes an inner resilient member (210) and an outer resilient member (220) disposed outside of the inner resilient member (210), said outer resilient member (220) having a lower resiliency than the inner resilient member (210), said microinjection apparatus (310) being disposed outside of the outer resilient member (220).
9. The intestinal submucosal injection apparatus according to claim 8, wherein a plurality of elastic separators (11) are disposed between said needle-out air bag and said outer layer elastic member (220), said elastic separators (11) are axially disposed along said outer layer elastic member (220) and divide said needle-out air bag into a plurality of small air supply chambers, said air supply lumen (610) comprises a plurality of air supply channels (611) cooperating with said air supply chambers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921859753.2U CN211659041U (en) | 2019-10-31 | 2019-10-31 | Intestinal submucosal injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921859753.2U CN211659041U (en) | 2019-10-31 | 2019-10-31 | Intestinal submucosal injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211659041U true CN211659041U (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921859753.2U Active CN211659041U (en) | 2019-10-31 | 2019-10-31 | Intestinal submucosal injection device |
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| Country | Link |
|---|---|
| CN (1) | CN211659041U (en) |
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2019
- 2019-10-31 CN CN201921859753.2U patent/CN211659041U/en active Active
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