CN217793259U

CN217793259U - Endoscopic injection needle for treating varicose vein of digestive tract

Info

Publication number: CN217793259U
Application number: CN202220430688.7U
Authority: CN
Inventors: 张佑嘉
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-11-15
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses an endoscopic injection needle for alimentary canal varicosity treatment, which comprises a front handle 6, wherein the front end of the front handle 6 is connected with an outer sleeve 3 through a protective sleeve 5, an injection inner tube 4 is arranged in the outer sleeve 3, the outer end of the injection inner tube 4 is connected with the front end of an injection handle 7, the front part of the injection handle 7 extends into the front handle 6 and moves along the front handle, and the end part of the injection handle 7 is provided with a luer 8; the inner end of the liquid injection inner tube 4 is connected with a metal tube head 9, and the metal tube head 9 is connected with a liquid injection needle head 1; the end pipe section 10 of the outer sleeve 3 is internally conical, namely the wall thickness of the end pipe section is gradually reduced from outside to inside, the diameter of the outer port of the end pipe section 10 is the same as the outer diameter of the injection needle 1 and is 1/2 to 1/3 of the inner diameter of the outer sleeve 3; the end pipe section 10 is evenly divided into three parts in the radial plane. The utility model discloses to present treatment varicosity fracture bleed, only will annotate the liquid syringe needle and prick into the blood vessel, avoid pricking the outer sleeve pipe tip into the blood vessel, reduce misoperation as far as possible.

Description

Endoscopic injection needle for treating varicose vein of digestive tract

Technical Field

The utility model relates to a digestive endoscopy annex class apparatus technical field specifically is a scope syringe needle for alimentary canal varication treatment.

Background

The disposable endoscope injection needle is one of accessories of a plurality of digestive endoscope instruments, is matched with a digestive endoscope for use, and completes diagnosis and treatment operation.

At present, although different manufacturers and various models and specifications of endoscopic injection needles have different structures, as shown in fig. 1 and 2, endoscopic injection needles are composed of an injection inner tube 4 with a front end connected with an injection needle head 1, an outer sleeve 3 sleeved outside the injection inner tube 4 and an operation part; the operation part comprises a liquid injection handle and a front handle. Specifically, 6 front ends of the front handles pass through the protecting sleeve 5 to be connected with the outer sleeve 3, the front end part of the outer sleeve 3 is provided with a guide metal head 2, the outer end of the liquid injection inner tube 4 is connected with the front end of the liquid injection handle 7, the front part of the liquid injection handle 7 extends into the front handle 6 and moves along the front handle, the liquid injection handle is pushed and pulled, the liquid injection inner tube 4 is driven to move in the outer sleeve 3, the action that the liquid injection needle head 1 can extend out or retract to guide the metal head 2 is achieved, and the end part of the liquid injection handle 7 is provided with a luer 8 and is used for being connected with a syringe. During diagnosis and treatment, the liquid-filled inner tube and the liquid-filled outer tube with the needle head are conveyed to a focus through a forceps channel of a digestive endoscope, and the operations of gastrointestinal submucosal injection and intravascular injection are completed.

The main purpose of submucosal injection is to open up a water cushion (providing a water isolation layer) to separate the tissues and complete the resection of the target tissue (e.g., precancer or precancerous lesion, benign tumor, etc.). Because the operation is a selective operation which can be performed under the general anesthesia state, the injection difficulty is greatly reduced, and the requirement on an injection needle is not high.

However, the situation of intravascular injections is quite different.

Intravascular injections are mainly seen in patients with bleeding due to varicose veins in liver cirrhosis. The hepatic cirrhosis patients have the problems that the portal vein blood backflow is blocked due to the fibrosis of the liver tissue and the formation of false lobules, so that the portal vein pressure is increased, and all blood flowing to the portal vein is blocked and detained in blood vessels at the parts such as the fundus of the stomach, the esophagus and the like. As the disease progresses, the pressure on the blood vessels at these parts becomes greater and the blood vessels will expand in a tortuous manner, so that the vessel wall can be supported to be thin, even to the extent that the liquid flow inside can be seen. Varicose fractures occur first where the walls of the tube are weakest. Once bleeding occurs, the blood flow can spray as a column, endangering the life of the patient.

The first choice method for treating varicose vein rupture bleeding at present is to puncture the blood vessel around the varicose vein rupture by using a venous injection needle under a gastroscope, inject a hardening agent and a blocking adhesive into the ruptured varicose vein, and enable the hardening agent and the blocking adhesive to overflow and solidify from the rupture by virtue of the injection pressure so as to achieve the purpose of blocking the rupture.

In reality, patients who bleed due to rupture of varicose veins are treated urgently. The patient suffers from poor overall condition and increased risk of accidental asphyxia due to anesthesia, accompanied by a large amount of blood being vomited through the oral cavity and vomiting while walking. Under the waking state, normal and physiological reflection of gastrointestinal tract exists, and various reflection of a patient is more active due to stimulation of hematocele, and the pressure of the varicose vein is high, and the wall of the vein is integrally thinned. The result is that the patient experiences more severe bleeding and has to reselect the distal vessel to repeat the injection procedure. After multiple injections, although bleeding is stopped, a large-area scar is formed at an injection part due to large wound area, the healing of the large-area scar can cause the digestive tract to be narrow, and a patient feels dysphagia. In severe cases, incision treatment of the scar at the stenosis is also required. Not only increases the medical risk, but also increases the economic burden of the patient.

Disclosure of Invention

When bleeding to present treatment varicosity rupture, adopt the disposable scope syringe needle of conventionality, puncture varicosity vein laceration blood vessel on every side, to the varicosity vein that breaks, the in-process of pouring into hardener and blocking agent into, the outer tube tip that leads to current syringe needle leads to the metal head to send frequently along with annotating the phenomenon that the liquid syringe needle together got into the blood vessel, the utility model aims at providing a novel scope syringe needle for treatment of alimentary canal varicosity.

The utility model discloses an adopt following technical scheme to realize:

the utility model provides an scope syringe needle for alimentary canal varicosity treatment, includes the front handle, the front handle front end passes through the protective sheath union coupling outer tube, be equipped with in the outer tube and annotate the liquid inner tube, annotate the outer end of liquid inner tube and be connected with the front end of annotating the liquid handle, annotate liquid handle front portion and stretch into in the front handle and along its motion, it is equipped with luer to annotate liquid handle tip.

The front inner port of the liquid injection inner tube is connected with a metal tube head, and the metal tube head is connected with a liquid injection needle head; the inside of the tail end pipe section of the outer sleeve is a conical surface, namely the wall thickness of the tail end pipe section is gradually reduced from outside to inside, and the diameter of an outer port of the tail end pipe section is the same as the outer diameter of the liquid injection needle head and is 1/2 to 1/3 of the inner diameter of the outer sleeve; the end pipe section is evenly divided into three parts on the radial surface.

When the liquid injection needle is used, the conical surface is designed in the tail end pipe section of the outer sleeve, and the liquid injection needle is connected with the liquid injection inner pipe through the metal pipe head, so that the metal pipe head penetrates through the tail end pipe section to expand the tail end pipe section into a horn shape in the process that the liquid injection needle extends out of the outer sleeve, and the outer end area of the tail end pipe section can be enlarged to more than one time. Therefore, after the injection needle head is partially and completely inserted into the blood vessel, the expanded outer end face can provide larger feedback resistance to remind a doctor to stop inserting operation in time, and the expanded outer end face can also effectively prevent the end part of the outer sleeve from inserting into the blood vessel along with the injection needle head. And, annotate the outer cross-sectional shape design of liquid inner tube and be regular hexagon, reduce the friction between annotating liquid inner tube and the outer tube for annotate the motion of liquid inner tube more smoothly.

The utility model has the advantages that: aiming at the current treatment of varicosity rupture bleeding, only the injection needle is pricked into the blood vessel, the end part of the outer sleeve can be prevented from being pricked into the blood vessel, the misoperation is reduced as much as possible, and the smooth operation is ensured.

The utility model relates to a rationally, fine practical application is worth having.

Drawings

Fig. 1 shows a schematic view of a conventional disposable endoscope needle (standard handle).

Fig. 2 is a schematic view showing the structure of a conventional disposable endoscope injection needle (simple handle).

Fig. 3 shows a front view of the endoscopic injection needle according to the present invention (the injection needle is located in the end tube section of the outer cannula).

Fig. 4 shows a schematic view of the front portion of the endoscopic injection needle according to the present invention (the injection needle is fully extended out of the end tube section of the outer cannula).

Fig. 5 shows a schematic front end view of the outer sleeve (the filling needle is not extended and the end tube section is not spread).

FIG. 6 is a schematic cross-sectional view of the inner tube and outer sleeve.

In the figure: 1-liquid injection needle head, 2-guide metal head, 3-outer sleeve, 4-liquid injection inner tube, 5-protective sleeve, 6-front handle, 7-liquid injection handle, 8-Ruhr interface, 9-metal tube head, and 10-end tube section.

Detailed Description

The following describes in detail a specific embodiment of the present invention with reference to the drawings.

The utility model provides an scope syringe needle for alimentary canal varicosity treatment, includes

front handle

6, and 6 front ends of front handle pass through protecting tube 5 and connect outer tube 3, are equipped with in the outer tube 3 and annotate liquid inner tube 4, annotate the outer end of liquid inner tube 4 and annotate the front end of liquid handle 7 and be connected, annotate liquid handle 7 front portion stretch into in the front handle 6 and along its motion, annotate liquid handle 7 tip and be equipped with luer 8 for connect the syringe.

As shown in fig. 3 and 4, the inner port of the inner liquid injection tube 4 is connected with a metal tube head 9, and the metal tube head 9 is connected with the liquid injection needle 1; the end pipe section 10 of the outer sleeve 3 is internally conical, namely the wall thickness of the end pipe section is gradually reduced from outside to inside, the diameter of the outer port of the end pipe section 10 is the same as the outer diameter of the injection needle 1 and is 1/2 to 1/3 of the inner diameter of the outer sleeve 3; the end pipe section 10 is evenly divided into three parts (or four parts) in the radial plane, as shown in fig. 5, so that the metal pipe head 9 is conveniently expanded when passing through the end pipe section 10, and the area of the end head is enlarged. The outer cross-sectional shape of the inner liquid injection tube 4 is a regular hexagon, as shown in fig. 6.

In specific implementation, the outer sleeve 3 and the liquid injection inner tube 4 are both made of transparent materials. The metal tube head 9 and the liquid injection needle head 1 are made of stainless steel materials with the same material.

The improved design of the endoscopic injection needle mainly aims at the treatment of varicose vein of digestive tract. The guide metal head is installed outside the end of the outer sleeve of the conventional endoscope injection needle, and because the front end of the guide metal head is smooth and the diameter of the end surface is slightly smaller than that of the outer sleeve, when a doctor operates to prick the injection needle into a varicose vein, the guide metal head can enter along with the needle because the wall of the vein is very thin and the pressure of the vein is larger and the operating force of the doctor is slightly larger. Therefore, the utility model relates to a characteristics lie in, will remove at the original guide metal head of outer tube tip design, be the conical surface with the terminal pipeline section inner wall design of outer tube to will annotate the liquid syringe needle and pass through the metal tube head and annotate liquid inner tube connection, annotate the in-process that the liquid syringe needle stretches out the outer tube like this, the metal tube head passes terminal pipeline section and struts it for loudspeaker form, can expand the outer terminal area of terminal pipeline section more than one time. Therefore, after the injection needle head is completely inserted into the blood vessel, the expanded outer end face can provide larger feedback resistance to remind a doctor to stop inserting operation in time, and the end part of the outer sleeve is effectively prevented from being inserted into the blood vessel. In addition, the outer cross-sectional shape of annotating the liquid inner tube designs for regular hexagon, reduces to annotate the friction between liquid inner tube and the outer tube for annotate the motion of liquid inner tube more smoothly.

When in specific use, the endoscope injection needle is packaged in aseptic package, and the use mode of the endoscope injection needle is the same as that of the existing disposable endoscope injection needle.

1. Preparation work:

1) And (3) sterile packaging inspection: and checking whether the aseptic package is cracked, not tightly sealed or soaked in water, and the like.

2) And (3) appearance inspection: and taking out the product from the package, checking whether the outer tube and the liquid injection inner tube are bent, twisted, damaged and the like, and checking whether each component of the product is fallen, loosened, damaged and the like.

3) Operation checking: unfolding and straightening the outer tube, pushing the liquid injection handle into a front handle to the head by imitating the using action, and confirming that the liquid injection needle head extends out of the tail end tube section of the outer sleeve; the injection handle is then pulled back to the head, confirming the retraction of the injection needle into the end tubing section from the outer cannula.

Remarking: the above actions can be smoothly performed by light operation.

4) And (3) injection inspection: and (4) operating according to the step 3, pushing the injection handle to the head so as to extend the injection needle head out of the end pipe section of the outer sleeve. The syringe filled with the liquid medicine is connected with the liquid injection handle through the luer, the piston of the liquid injector is pushed to exhaust the air in the liquid injection inner tube until the liquid medicine flows out at the needle point, and the liquid medicine is confirmed not to leak out of the needle point.

2. Inserting an endoscope:

5) And 3) operating according to the step 3), and pulling the injection handle back to the head so as to push the injection needle back to the tail end pipe section of the outer sleeve. The outer sleeve is inserted into the hole of the forceps channel of the endoscope, and the outer sleeve is slowly pushed until the end of the outer sleeve enters the visual field of the endoscope.

Note that: when the operations of the

steps

4 and 9 are carried out, the injection handle is required to be pulled back to the head, and the injection needle head is completely retracted into the tail end pipe section of the outer sleeve. The above operations are performed in order to avoid damage to the endoscope when inserting/withdrawing the product, and to the patient when the needle may suddenly protrude from the endoscope, such as perforation, bleeding or mucosal damage.

6) The proper injection site is selected through the endoscope and the lens position is maintained.

3. Puncturing tissue and injecting a liquid medicine:

7) The liquid injection handle is pushed into the front handle component, the metal pipe head at the end part of the liquid injection inner pipe stretches the end pipe section to be in a three-claw shape in the process of passing through the end pipe section of the outer sleeve, and the liquid injection needle head is confirmed to be completely extended at the moment.

Note that: when the step 7 is carried out, the injection handle is required to be pushed to the head, the needle head is completely extended, and the purpose of carrying out the operation is to prevent the needle head from retracting to cause failure of inserting into the target tissue (blood vessel) when the step 7 is carried out.

8) After the needle head is pricked into the target tissue, the injector piston is pushed to perform injection operation.

9) After the injection is completed, the needle is withdrawn from the injection site.

Remarking: the above (6-8) steps can be repeated according to actual needs to carry out multiple injection operations.

4. Withdrawing the injection needle:

10 After the operation is completed, the injection handle is pulled back to the head, the needle is retracted into the end tube section of the outer sleeve, and the product is taken out of the endoscope.

Note that: when the operations of the

steps

4 and 9 are carried out, the injection handle is required to be pulled back to the head, and the needle head is completely retracted into the tail end pipe section of the outer sleeve. The above operations are performed in order to avoid damage to the endoscope when inserting/withdrawing the product, and damage to the patient, such as perforation, bleeding or mucosal damage, when the needle may suddenly protrude from the endoscope.

5. And (3) post-operation instrument treatment:

11 Biohazardous medical waste management discipline handling of the product at the institution where it is installed.

Scope syringe needle, use with the endoscope is supporting, under the gastroscope mainly when breaking to bleed to treatment varicosity, puncture the blood vessel around the varicosity vein laceration with the syringe needle. Disposable, destroy after using, forbid the used repeatedly strictly. Must be performed by a physician trained in the practice of endoscopic procedures and mucosal injection procedures, which are performed under endoscopic monitoring. The packaged injection needle is stored in a room with relative humidity not more than 80%, no corrosive gas and good ventilation.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the detailed description is given with reference to the embodiments of the present invention, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which shall all be covered by the protection scope of the claims of the present invention.

Claims

1. An endoscopic injection needle for treating varicose vein of digestive tract comprises a front handle (6), wherein the front end of the front handle (6) is connected with an outer sleeve (3) through a protective sleeve (5), an injection inner tube (4) is arranged in the outer sleeve (3), the outer end of the injection inner tube (4) is connected with the front end of an injection handle (7), the front part of the injection handle (7) extends into the front handle (6) and moves along the front handle, and the end part of the injection handle (7) is provided with a luer (8);

the method is characterized in that: the inner port of the liquid injection inner tube (4) is connected with a metal tube head (9), and the metal tube head (9) is connected with a liquid injection needle head (1); the inner part of the tail end pipe section (10) of the outer sleeve (3) is a conical surface, namely the wall thickness of the tail end pipe section is gradually reduced from outside to inside, the diameter of the outer port of the tail end pipe section (10) is the same as the outer diameter of the injection needle head (1) and is 1/2 to 1/3 of the inner diameter of the outer sleeve (3); the end pipe section (10) is evenly divided into three parts or four parts on the radial surface.

2. An endoscopic injection needle for the treatment of varicose veins in the alimentary canal according to claim 1, characterized in that: the outer section of the liquid injection inner pipe (4) is in a regular hexagon shape.

3. An endoscopic injection needle for the treatment of varicose veins in the alimentary canal according to claim 1 or 2, characterized in that: the outer sleeve (3) and the liquid injection inner tube (4) are both made of transparent materials.