CN115317056A - Disposable double-cavity injection needle for endoscope - Google Patents
Disposable double-cavity injection needle for endoscope Download PDFInfo
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- CN115317056A CN115317056A CN202210948242.8A CN202210948242A CN115317056A CN 115317056 A CN115317056 A CN 115317056A CN 202210948242 A CN202210948242 A CN 202210948242A CN 115317056 A CN115317056 A CN 115317056A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12027—Type of occlusion
- A61B17/12031—Type of occlusion complete occlusion
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/1214—Coils or wires
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12181—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or extracellular matrices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to a double-cavity injection needle for a disposable endoscope, which comprises a double-cavity injection tube outer tube, a first injection cavity and a second injection cavity, wherein the first injection cavity and the second injection cavity are arranged in the double-cavity injection tube outer tube; the injection needle comprises a needle front end opening and a needle tail end connecting part, and the needle tail end connecting part is respectively communicated and connected with the far ends of the first injection cavity and the second injection cavity. The invention can realize that the operation of gluing is carried out simultaneously in the process of releasing the spring ring, so that the embolic agent is attached to the spring ring for solidification, thereby effectively reducing ectopic embolism caused by factors such as blood flow, glue flow and the like. Meanwhile, the operation process can be greatly simplified, the operation time is effectively shortened, the operation difficulty and the operation risk are reduced, and the occurrence risks of injection failure, bleeding, various complications and the like in the operation process are also reduced.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a disposable double-cavity injection needle for an endoscope.
Background
The disposable injection needle for the endoscope is matched with the endoscope for use, is a medical consumable commonly used in the digestive endoscope diagnosis and treatment technology, is widely applied to operations such as polyp and tumor excision under gastroscopes and enteroscopes, mucosa excision, varicose vein medical glue embolism and the like in the digestive system department, plays an important role in the treatment process of esophageal and gastric varicose vein operations and the like, and is highly advocated by the medical field.
The inner tubes of the disposable endoscope injection needles in the current market are all single-cavity tubes. The disposable injection needle for the endoscope enters the internal cavity of the digestive tract of a human body through the forceps channel of the digestive endoscope in the operation process, and then normal saline, medicines, medical glue and the like are injected to the lower part of the mucosa through the single-cavity inner tube to assist the treatment and the processing operation required by a doctor. In the operation process of plugging varicose veins at the fundus of the stomach, due to factors such as blood flow, glue flow and the like, the medical glue embolic agent easily enters a non-target area so as to form ectopic embolism. In addition, the operation processes are complex, the operation time is increased, the operation difficulty is high, the risk is high, and the risks of injection failure, bleeding, various complications and the like in the operation process are increased.
Therefore, it is desirable to provide a disposable double-lumen injection needle for endoscope, which has one additional lumen, including two channels, compared to the existing disposable injection needle for endoscope in the market. In the process of embolization operation, only one product can be used, and the occurrence of ectopic embolization is effectively prevented.
Disclosure of Invention
In view of the above, the present invention is directed to a disposable double-lumen injection needle for an endoscope, in which two injection lumens are disposed in an outer tube of the double-lumen injection needle, so that the function of pushing a spring coil to a specific position can be increased, and the original function of injecting saline, a drug, medical glue, etc. under a mucosa can be maintained, thereby preventing the occurrence of ectopic embolism.
In order to solve the technical problems, the invention adopts the following technical scheme:
a disposable double-cavity injection needle for an endoscope comprises an injection needle head, a double-cavity injection tube and a handle system, wherein the double-cavity injection tube comprises a double-cavity injection tube outer tube and a first injection cavity and a second injection cavity which are arranged in the double-cavity injection tube outer tube, the first injection cavity and the second injection cavity are arranged in parallel and have the same direction as the axial direction of the double-cavity injection tube, and the near end of the double-cavity injection tube is connected with the handle system; the injection needle comprises a needle head front end opening and a needle head tail end connecting part, and the needle head tail end connecting part is respectively communicated and connected with the far ends of the first injection cavity and the second injection cavity.
Preferably, the first injection cavity is internally pre-provided with the spring ring and a hydraulic device arranged on the proximal end side of the spring ring, the proximal end of the first injection cavity is connected with a first injection cavity connecting port, the proximal end of the first injection cavity connecting port is connected with a syringe, the proximal end of the second injection cavity is connected with a second injection cavity connecting port, and the second injection cavity connecting port is connected with a liquid injection system; the needle tail end connecting part of the injection needle comprises a needle tail end opening, and the needle tail end opening is respectively communicated and connected with the far ends of the first injection cavity and the second injection cavity. The effect of first injection chamber is release spring coil, hydraulic means is cylindrical and its external diameter equals the internal diameter of first injection chamber, utilizes hydraulic means and syringe to adopt hydraulic pressure mode to carry out the propelling movement, and hydraulic means arranges the near-end side of spring coil in, and first injection chamber connector is connected the back with the syringe, promotes the syringe and injects liquid, thereby makes hydraulic means move to the distal end and promote the spring coil and release entering human alimentary canal through the syringe needle front end opening of syringe needle, and hydraulic means 7 also can get into human alimentary canal afterwards. Then, the liquid injection device communicated with the second injection cavity is used for simultaneously injecting embolic agents such as medical glue and the like, and the embolic agents enter the digestive tract of a human body through the tail end opening of the needle head and the front end opening of the needle head, so that the embolic agents are attached to the spring ring for solidification, and therefore ectopic embolism caused by factors such as blood flow, glue flow and the like is effectively reduced.
In another preferred mode, the first injection cavity is internally pre-provided with a spring ring and a push rod device arranged at the proximal end side of the spring ring, the proximal end of the first injection cavity is connected with a first injection cavity connecting port, the near end of the second injection cavity is connected with a second injection cavity connecting port, and the second injection cavity connecting port is connected with a liquid injection system; the syringe needle tail end connecting portion of syringe needle includes syringe needle tail end opening and syringe needle lateral wall opening, syringe needle tail end opening and first injection chamber intercommunication are connected, syringe needle lateral wall opening and the distal end intercommunication in second injection chamber are connected. The first injection cavity is used for releasing the spring ring, the push rod device is a steel wire or a push rod, and the spring ring is pushed to the far end by the push rod device so as to be released into the digestive tract of a human body through the opening at the front end of the needle head of the injection needle. Then the push rod device is retracted to the rear end of the opening of the side wall of the needle head towards the near end, and then the liquid injection device communicated with the second injection cavity is used for simultaneously injecting the embolic agent such as medical glue and the like, and the embolic agent enters the alimentary canal of a human body through the opening of the side wall of the needle head and the opening of the front end of the needle head, so that the embolic agent is attached to the spring ring for solidification, and therefore ectopic embolism caused by factors such as blood flow, glue flow and the like is effectively reduced. The push rod device retracts to the rear end of the opening of the side wall of the needle head, so that medical glue can be prevented from entering the first injection cavity and flowing back when the medical glue is injected.
The traditional one-off injection needle for endoscope is only withdrawn from the spring ring injection device and then injected with medical glue under the condition that the spring ring is completely released and unlocked. The disposable double-cavity injection needle for the endoscope can realize the simultaneous gluing operation in the releasing process of the spring ring and realize the control of the releasing and unlocking degree of the spring ring according to the actual condition of the operation. The spring ring pushing efficiency is improved, the spring ring is prevented from drifting in the blood vessel, the medical glue is prevented from drifting in the blood vessel, and the occurrence of ectopic embolism is prevented.
Furthermore, the handle system is a three-way handle, the near end of the double-cavity injection tube is connected with the far end of the three-way handle, and the near ends of the first injection cavity connecting port and the second injection cavity connecting port respectively penetrate through the three-way handle and penetrate out of the near end of the three-way handle.
Further, a protective cap is connected between the near end of the double-cavity injection tube and the far end of the three-way handle. The protective cap is used for ensuring the reliable sealing connection between the double-cavity injection tube and the three-way handle.
Furthermore, an ultrasonic visual girdle band is arranged on the outer side wall of the outer tube of the double-cavity injection tube. Under the guidance of the ultrasonic instrument, the specific position of the double-cavity injection tube in the human body can be determined by means of the ultrasonic visual girdle, and the operation is guided.
Further, the outer diameter of the outer tube of the double-cavity injection tube is not more than 2.8mm, the cross section of the first injection cavity is circular, the inner diameter of the first injection cavity is 0.2mm-2.0mm, and the cross section area of the second injection cavity is not more than 0.3mm 2 . The second injection cavity is used as a channel of the liquid injection device and can be in any shape, cylindrical, non-cylindrical or other shapes.
Further, the syringe needle has the protective sheath outward, the material of protective sheath is silica gel or rubber. Before the injection needle is not used, the outside of the injection needle is covered with a protective sleeve which protects the clamping path and the needle point of the injection needle when the endoscope needle passes through the inner diameter clamping path. In the process of embolism operation, the protective sheath can be ejected out to fall into the alimentary canal of human body in the process of releasing the spring ring.
Furthermore, the hydraulic device is a hydraulic piston, and the hydraulic piston is made of silica gel or rubber.
In the process of embolization operation by using the disposable double-cavity injection needle for endoscope, physiological saline, medicine and the like can be injected into the submucosal surface from the second injection cavity to assist the treatment and treatment operation required by doctors; then pushing the spring ring to a specified position from the first injection cavity; then, the embolism agent such as medical glue and the like is injected from the second injection cavity, so that the embolism agent is attached to the spring ring for solidification, and the ectopic embolism caused by factors such as blood flow, glue flow and the like is effectively reduced.
The invention has the following beneficial effects:
by adopting the technical scheme, the disposable double-cavity injection needle for the endoscope is used for simultaneously gluing in the releasing process of the spring ring in the embolization operation process, the releasing and unlocking degrees of the spring ring are controlled according to the actual operation condition, and the embolization agent is attached to the spring ring for solidification, so that the ectopic embolization caused by factors such as blood flow, glue flow and the like is effectively reduced. Meanwhile, the operation process can be greatly simplified, the operation time is effectively shortened, the operation difficulty and the operation risk are reduced, and the occurrence risks of injection failure, bleeding, various complications and the like in the operation process are also reduced.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to make the technical means implementable in accordance with the content of the description, and to make the above and other objects, technical features, and advantages of the present invention more comprehensible, one or more preferred embodiments are listed below, and are described in detail below with reference to the accompanying drawings.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is an exploded view of a single-use double-lumen injection needle for an endoscope according to the present invention.
Fig. 2 is a schematic view showing the combined structure of a double-lumen injection needle for a disposable endoscope of the present invention.
Fig. 3 is a schematic structural view of an embodiment of the double-cavity injection tube of the double-cavity injection needle for the disposable endoscope.
Fig. 4 is a schematic structural view of another embodiment of the double-cavity injection tube of the double-cavity injection needle for the disposable endoscope.
Fig. 5 is a schematic structural view showing a double-lumen injection needle of a double-lumen injection needle for a disposable endoscope according to the present invention.
Fig. 6 is a structural diagram showing another direction of the double-cavity injection needle for the disposable endoscope.
Description of the main reference numerals:
1-an injection needle 11-a needle front end opening, 12-a needle side wall opening, 13-a needle tail end opening, 2-a double-cavity injection tube, 21-a double-cavity injection tube outer tube, 22-a first injection cavity, 23-a second injection cavity, 3-a protective cap, 4-a three-way handle, 5-a second injection cavity connecting port, 6-a first injection cavity connecting port, 7-a hydraulic device and 8-an injector.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Spatially relative terms, such as "under", "below", "lower", "upper", "over", "upper", and the like, may be used herein for convenience in describing the relationship of one element or feature to another element or feature in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the object in use or operation in addition to the orientation depicted in the figures. For example, if the items in the figures are turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the elements or features. Thus, the exemplary term "below" can encompass both an orientation of below and above. The articles may have other orientations (rotated 90 degrees or otherwise) and the spatially relative terms used herein should be interpreted accordingly.
Example 1
As shown in fig. 1 to 6, a disposable double-cavity injection needle for an endoscope comprises an injection needle 1, a double-cavity injection tube 2 and a handle system, wherein the double-cavity injection tube 2 comprises a double-cavity injection tube outer tube 21 and a first injection cavity 22 and a second injection cavity 23 which are arranged in the double-cavity injection tube outer tube 21, the first injection cavity 22 and the second injection cavity 23 are arranged in parallel and have the same direction as the axial direction of the double-cavity injection tube 21, and the proximal end of the double-cavity injection tube 2 is connected with the handle system; the injection needle 1 comprises a needle front end opening 11 and a needle tail end connecting part, and the needle tail end connecting part is respectively communicated and connected with the far ends of the first injection cavity 22 and the second injection cavity 23.
The first injection cavity 22 is internally preloaded with a spring ring and a hydraulic device 7 arranged on the proximal side of the spring ring, the proximal end of the first injection cavity 22 is connected with a first injection cavity connecting port 6, the proximal end of the first injection cavity connecting port 6 is connected with an injector 8, the proximal end of the second injection cavity 23 is connected with a second injection cavity connecting port 5, and the second injection cavity connecting port 5 is connected with an injection system; the needle tail end connecting part of the injection needle 1 comprises a needle tail end opening 13, and the needle tail end opening 13 is respectively communicated and connected with the far ends of a first injection cavity 22 and a second injection cavity 23. The hydraulic device 7 is a hydraulic piston, and the hydraulic piston is made of silica gel or rubber.
The effect of first injection chamber 22 is the release spring circle, hydraulic means 7 is cylindrical and its external diameter equals the internal diameter in first injection chamber 22, utilizes hydraulic means 7 and syringe 8 to adopt the hydraulic pressure mode to carry out the propelling movement, hydraulic means 7 arranges the near-end side of spring circle in, first injection chamber connector 6 is connected the back with syringe 8, promotes syringe 8 and injects liquid, thereby makes hydraulic means 7 move to the distal end and promote the spring circle and release entering human alimentary canal through the syringe needle front end opening 11 of syringe needle 1, hydraulic means 7 also can enter human alimentary canal afterwards. Then, the liquid injection device communicated with the second injection cavity 23 is used for simultaneously injecting embolic agents such as medical glue and the like, and the embolic agents enter the digestive tract of a human body through the opening 13 at the tail end of the needle head and the opening 11 at the front end of the needle head, so that the embolic agents are attached to the spring ring for solidification, and the ectopic embolism caused by factors such as blood flow, glue flow and the like is effectively reduced.
The handle system is a three-way handle 4, the near end of the double-cavity injection tube 2 is connected with the far end of the three-way handle 4, and the near ends of the first injection cavity connecting port 6 and the second injection cavity connecting port 5 respectively penetrate through the three-way handle 4 and penetrate out of the near end of the three-way handle 4.
A protective cap 3 is connected between the near end of the double-cavity injection tube 2 and the far end of the three-way handle 4. The protective cap 3 is used for ensuring the reliable sealing connection between the double-cavity injection tube 2 and the three-way handle 4.
The outer side wall of the outer tube 21 of the double-cavity injection tube is provided with an ultrasonic visual ring belt. Under the guidance of the ultrasonic instrument, the specific position of the double-cavity injection tube 2 in the human body can be determined by the ultrasonic visual girdle, and the operation can be guided.
The outer diameter of the outer tube 21 of the double-cavity injection tube is not more than 2.8mm, the cross section of the first injection cavity 22 is circular, the inner diameter of the first injection cavity 22 is 0.2mm-2.0mm, and the cross sectional area of the second injection cavity 23 is not more than 0.3mm 2 . The second injection cavity 23 is used as a passage of the liquid injection device, and can be in any shape, cylindrical, non-cylindrical or other shapes. Fig. 3 and 4 show two different shaped embodiments of the second injection cavity 23, respectively.
The injection needle 1 is covered with a protective sleeve, and the protective sleeve is made of silica gel or rubber. Before the injection needle 1 is not used, the outside of the injection needle is covered with a protective sleeve which protects the clamping path and the needle point of the injection needle 1 when an endoscope needle passes through the inner diameter clamping path. In the process of embolism operation, the protective sheath can be ejected out to fall into the alimentary canal of human body in the process of releasing the spring ring.
Example 2
Example 2 differs from example 1 in the way the spring coils are pushed. While embodiment 1 employs a hydraulic pushing manner, embodiment 2 employs a push rod pushing manner.
The first injection cavity 22 is internally preloaded with a spring ring and a push rod device arranged at the proximal side of the spring ring, the proximal end of the first injection cavity 22 is connected with a first injection cavity connecting port 6, the proximal end of the second injection cavity 23 is connected with a second injection cavity connecting port 5, and the second injection cavity connecting port 5 is connected with an injection system; the needle tail end connecting part of the injection needle 1 comprises a needle tail end opening 13 and a needle side wall opening 12, the needle tail end opening 13 is communicated and connected with the first injection cavity 22, and the needle side wall opening 12 is communicated and connected with the far end of the second injection cavity 23. The first injection cavity 22 is used for releasing the spring ring, the push rod device is a steel wire or a push rod, and the spring ring is pushed to the far end by the push rod device, so that the spring ring is released into the digestive tract of the human body through the needle head front end opening 11 of the injection needle head 1. Then the push rod device is retracted to the rear end of the needle side wall opening 12 towards the near end, and then the liquid injection device communicated with the second injection cavity 23 is used for simultaneously injecting the embolic agent such as medical glue, and the embolic agent enters the alimentary canal of a human body through the needle side wall opening 12 and the needle front end opening 11, so that the embolic agent is attached to the spring ring for solidification, and the ectopic embolism caused by factors such as blood flow and glue flow is effectively reduced. The retraction of the plunger assembly to the rear end of the needle sidewall opening 12 prevents the backflow of medical adhesive into the first injection chamber 22 during the injection of the medical adhesive.
The traditional one-off injection needle for endoscope is only withdrawn from the spring ring injection device and then injected with medical glue under the condition that the spring ring is completely released and unlocked. The disposable double-cavity injection needle for the endoscope can realize the simultaneous gluing operation in the releasing process of the spring ring and realize the control of the releasing and unlocking degree of the spring ring according to the actual condition of the operation. The spring ring pushing efficiency is improved, the spring ring is prevented from drifting in the blood vessel, the medical glue is prevented from drifting in the blood vessel, and the occurrence of ectopic embolism is prevented.
In the process of embolization operation using the disposable double-cavity injection needle for endoscope, physiological saline, medicine and the like can be injected into the submucosal surface from the second injection cavity 23 to assist the treatment and treatment operations required by doctors; the coil is then pushed from the first injection cavity 22 to a designated position; then, the second injection cavity 23 is injected with the embolization agent such as medical glue, so that the embolization agent is attached to the spring ring for solidification, thereby effectively reducing ectopic embolization caused by factors such as blood flow and glue flow.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. Any simple modifications, equivalent changes and modifications made to the above exemplary embodiments shall fall within the scope of the present invention.
Claims (9)
1. The disposable double-cavity injection needle for the endoscope is characterized by comprising an injection needle head (1), a double-cavity injection tube (2) and a handle system, wherein the double-cavity injection tube (2) comprises a double-cavity injection tube outer tube (21), a first injection cavity (22) and a second injection cavity (23) which are arranged in the double-cavity injection tube outer tube (21), the first injection cavity (22) and the second injection cavity (23) are arranged in parallel, the direction of the first injection cavity and the direction of the second injection cavity are the same as the axial direction of the double-cavity injection tube (21), and the near end of the double-cavity injection tube (2) is connected with the handle system;
the injection needle (1) comprises a needle front end opening (11) and a needle tail end connecting part, and the needle tail end connecting part is respectively communicated and connected with the far ends of a first injection cavity (22) and a second injection cavity (23).
2. The double-cavity injection needle for the disposable endoscope according to the claim 1, characterized in that the first injection cavity (22) is pre-filled with the spring coil and the hydraulic device (7) arranged at the proximal side of the spring coil, the proximal end of the first injection cavity (22) is connected with a first injection cavity connecting port (6), the proximal end of the first injection cavity connecting port (6) is connected with a syringe (8), the proximal end of the second injection cavity (23) is connected with a second injection cavity connecting port (5), and the second injection cavity connecting port (5) is connected with an injection system;
the needle tail end connecting part of the injection needle (1) comprises a needle tail end opening (13), and the needle tail end opening (13) is respectively communicated and connected with the far ends of a first injection cavity (22) and a second injection cavity (23).
3. The disposable double-cavity injection needle for an endoscope, according to claim 1, characterized in that a spring coil and a push rod device arranged at the proximal side of the spring coil are pre-installed in the first injection cavity (22), the proximal end of the first injection cavity (22) is connected with a first injection cavity connecting port (6), the proximal end of the second injection cavity (23) is connected with a second injection cavity connecting port (5), and the second injection cavity connecting port (5) is connected with a liquid injection system;
the syringe needle tail end connecting portion of syringe needle (1) includes syringe needle tail end opening (13) and syringe needle lateral wall opening (12), syringe needle tail end opening (13) and first injection chamber (22) intercommunication are connected, syringe needle lateral wall opening (12) and the distal end intercommunication of second injection chamber (23) are connected.
4. A disposable double-lumen injection needle for endoscope according to claim 2 or 3 characterized in that said handle system is a three-way handle (4), the proximal end of said double-lumen injection tube (2) is connected with the distal end of said three-way handle (4), the proximal ends of said first injection lumen connecting port (6) and said second injection lumen connecting port (5) respectively pass through said three-way handle (4) and exit from the proximal end of said three-way handle (4).
5. A disposable double-cavity injection needle for endoscope, according to claim 4, characterized in that a protective cap (3) is connected between the proximal end of the double-cavity injection tube (2) and the distal end of the three-way handle (4).
6. A disposable double-cavity injection needle for an endoscope according to claim 5, characterized in that the outer side wall of the outer tube (21) of the double-cavity injection tube is provided with an ultrasonic visual ring belt.
7. The double-lumen injection needle for a disposable endoscope of claim 6, wherein the outer diameter of the outer tube (21) of the double-lumen injection needle is not more than 2.8mm, the cross-section of the first injection lumen (22) is circular, the inner diameter of the first injection lumen (22) is 0.2mm-2.0mm, and the cross-sectional area of the second injection lumen (23) is not more than 0.3mm 2 。
8. The disposable double-cavity injection needle for endoscope according to claim 7 characterized in that the injection needle (1) is covered with a protective sheath made of silica gel or rubber.
9. The double-cavity injection needle for a disposable endoscope of claim 2, characterized in that the hydraulic device (7) is a hydraulic piston made of silica gel or rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210948242.8A CN115317056A (en) | 2022-08-09 | 2022-08-09 | Disposable double-cavity injection needle for endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210948242.8A CN115317056A (en) | 2022-08-09 | 2022-08-09 | Disposable double-cavity injection needle for endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115317056A true CN115317056A (en) | 2022-11-11 |
Family
ID=83920819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210948242.8A Pending CN115317056A (en) | 2022-08-09 | 2022-08-09 | Disposable double-cavity injection needle for endoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115317056A (en) |
-
2022
- 2022-08-09 CN CN202210948242.8A patent/CN115317056A/en active Pending
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