Endoscope injection needle suitable for peptic ulcer

Abstract

The invention discloses an endoscope injection needle suitable for peptic ulcer, which relates to the field of medical instruments and specifically comprises an endoscope body, a disposable injection needle head, a disposable infusion tube, a connector, an anti-blocking plate and an adjusting grab handle. A conveying cavity for installing the disposable injection needle, the disposable infusion tube and the adjusting grab handle is formed in the endoscope body, the interior of the disposable injection needle is communicated with the interior of the disposable infusion tube, and the adjusting grab handle is arranged on one side of the disposable infusion tube. The use length of the disposable needle head is adjusted through the adjusting grab handle, the pushing rod, the fixing groove and the positioning groove, the pushing rod only needs to slide to the needed position in the positioning groove and then is clamped into the fixing groove in the adjusting process, and the convenience degree is high; secondly, through mutual cooperation of an anti-blocking plate, a non-return block and a reset spring, the effect of preventing the disposable injection needle from being blocked in the process that the endoscope body is placed into the body of a patient is achieved.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, in particular to an endoscopic injection needle suitable for peptic ulcer. Background Art

[0002] An endoscope is a tube equipped with a light, which can be passed through the mouth into the stomach or other natural orifices into the body. Endoscopes can be used to see lesions that cannot be shown by X-rays, so it is a commonly used medical device in clinical diagnosis and treatment. Medical staff insert the head and catheter of the device into the patient's body and observe it through the eyepiece. At the same time, the endoscope is also equipped with auxiliary equipment that can be used for sampling, treatment or surgery in real time while observing. The injection needle is one of the most important components of endoscopic treatment, which is used to inject liquid medicine into the cavity tissue during the clinical process.

[0003] Some existing endoscopic injection needles generally directly extrude the needle tube, and have only one length, and cannot adjust the required length of the needle tube. In addition, when the needle tube enters the affected area, the needle tip is easily blocked by foreign matter, thereby affecting the delivery of the drug solution. Summary of the invention

[0004] The object of the present invention is to provide an endoscopic injection needle suitable for peptic ulcer, so as to solve the problem mentioned in the above background technology that some existing endoscopic injection needles generally directly extrude the needle tube, have only one length, and cannot adjust the required length of the needle tube. In addition, when the needle tube enters the affected area, the needle tip is easily blocked by foreign matter, thereby affecting the delivery of the drug solution.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0006] The present invention provides an endoscopic injection needle for peptic ulcer, comprising an endoscope body, a disposable injection needle, a disposable infusion tube, a connector, an anti-blocking plate and an adjustable handle, characterized in that a delivery cavity for installing the disposable injection needle, the disposable infusion tube and the adjustable handle is provided inside the endoscope body, the inside of the disposable injection needle is connected to the inside of the disposable infusion tube, and the adjustable handle is arranged on one side of the disposable infusion tube:

[0007] Four anti-blocking plates are hinged inside the end of the conveying cavity, and the inner sides of the four anti-blocking plates are in contact with check blocks, and the outer sides of the four anti-blocking plates are in contact with the inner wall of the end of the conveying cavity through reset springs;

[0008] A positioning sleeve for installing an adjustment handle is fixedly installed at the tail end of the delivery cavity by screws, and a push rod is fixedly installed at the lower end of the adjustment handle. The push rod passes through the delivery cavity and extends to the outside of a clearance groove opened at the lower end of the endoscope body. The inner wall of the clearance groove is provided with fixed grooves for limiting the push rod at equal intervals.

[0009] Preferably, a guide sleeve is fixed inside the delivery cavity, and one end of the guide sleeve is connected to the port of the delivery cavity, and the inner size of the guide sleeve matches the outer size of the disposable injection needle.

[0010] Preferably, a sealing ring is provided inside the guide sleeve, and the sealing ring is sleeved on the outside of the disposable injection needle.

[0011] Preferably, the mutually contacting surfaces of the four anti-blocking plates are all fixed with silicone extension ends, and the material of the silicone extension ends themselves is medical-grade silicone material.

[0012] Preferably, the surface of the endoscope body is also provided with a replacement cavity connected to the interior of the delivery cavity, an injection tube passes through the middle of the replacement cavity, a connector is connected to the lower end of the injection tube, and the upper end of the injection tube is connected to the interior of the disposable infusion tube.

[0013] Preferably, guide rods for the interference head to be sleeved are fixedly installed on the front and rear sides of the replacement cavity, an accordion cover plate is installed between the interference head and the side wall of the replacement cavity, and interference springs are sleeved on the outside of the two guide rods, and the two ends of the two interference springs are in contact between the replacement cavity and the interference head.

[0014] Preferably, a metal patch magnetically adsorbed to a magnetic block is fixed at one end of the disposable infusion tube, the magnetic block is installed inside the adsorption block, and the adsorption block is rotatably connected to the side end of the adjustment handle through a bearing.

[0015] Preferably, a plurality of rotatable balls are mounted on the inner wall of the positioning sleeve, and the outer surfaces of the balls are in contact with the outer surface of the adjustment handle.

[0016] Preferably, a reserved cavity for installing a reinforcing wire is provided inside the wall of the disposable infusion tube, and the reinforcing wire is spirally wound and distributed inside the reserved cavity.

[0017] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0018] 1. The present invention adjusts the use length of the disposable needle by adjusting the grip, the push rod, the fixed groove and the positioning groove. When the endoscope body enters the ulcer position of the patient, the push rod of the adjusting grip rod is pushed to be stuck in the fixed groove body of the corresponding positioning groove. At this time, the disposable infusion tube will be pushed by the adjusting grip rod entering the delivery cavity. At this time, the disposable injection needle will push the anti-blocking plate under the guidance of the guide sleeve, and then the liquid medicine for treating the ulcer will be delivered through the syringe or the medical peristaltic pump through the connector;

[0019] 2. The present invention prevents the disposable injection needle from being blocked during the insertion of the endoscope into the patient's body by means of the cooperation of the anti-blocking plate, the check block and the reset spring. During insertion, the tissue fluid in the body cannot enter the delivery cavity due to the blocking of the anti-blocking plate. That is, when external pressure is applied, the blocking plate cannot be opened due to the restriction of the check block and the reset spring, thereby protecting the disposable needle from being blocked and affecting the delivery of the drug solution to the ulcer site. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] Figure 1 It is a schematic diagram of the main cross-sectional parts structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the parts structure of the endoscope body, the accordion cover plate and the connector from another perspective in the present invention;

[0023] Figure 3 It is a schematic diagram of the parts structure of the endoscope, the yielding groove, the fixing groove and the pushing rod from another perspective in the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional parts structure of the disposable infusion tube of the present invention;

[0025] Figure 5 yes Figure 1 A part structure enlarged schematic diagram;

[0026] Figure 6 yes Figure 1 The enlarged schematic diagram of the structure of the part B in FIG.

[0027] Figure 7 yes Figure 1 The enlarged schematic diagram of the C part structure;

[0028] Figure 8 yes Figure 1 The enlarged schematic diagram of the D part structure;

[0029] Fig. 9 yes Figure 2 The enlarged schematic diagram of the structure of the E part parts;

[0030] Fig.10 Schematic diagram of parts structure comparing the appearance of the present invention and the prior art (where Aa is the prior art, and Bb is the schematic diagram of parts structure of the present invention and the anti-blocking plate);

[0031] In the figure:

[0032] 1. Endoscope body; 2. Disposable injection needle; 3. Disposable infusion tube; 4. Adjustment handle; 5. Delivery cavity; 6. Anti-blocking plate; 7. Check block; 8. Reset spring; 9. Positioning sleeve; 10. Push rod; 11. Give way groove; 12. Fixing groove; 13. Guide sleeve; 14. Sealing ring; 15. Silicone extension end; 16. Injection tube; 17. Connector; 18. Replacement cavity; 19. Contact head; 20. Guide rod; 21. Organ cover plate; 22. Contact spring; 23. Magnetic block; 24. Metal patch; 25. Adsorption block; 26. Ball; 27. Reinforcement wire. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0034] See also Figure 1 - Fig.10 An endoscopic injection needle suitable for peptic ulcer comprises an endoscope body 1, a disposable injection needle 2, a disposable infusion tube 3, a connector 17, an anti-blocking plate 6 and an adjustment handle 4. The interior of the endoscope body 1 is provided with a delivery cavity 5 for installing the disposable injection needle 2, the disposable infusion tube 3 and the adjustment handle 4. The interior of the disposable injection needle 2 is connected with the interior of the disposable infusion tube 3. The adjustment handle 4 is arranged on one side of the disposable infusion tube 3:

[0035] Four anti-blocking plates 6 are hinged inside the end of the conveying cavity 5, and the inner sides of the four anti-blocking plates 6 are in contact with check blocks 7, and the outer sides of the four anti-blocking plates 6 are in contact with the inner wall of the end of the conveying cavity 5 through return springs 8;

[0036] The tail end of the delivery cavity 5 is fixedly installed with a positioning sleeve 9 for installing the adjustment handle 4 by means of screws, and a pushing rod 10 is fixedly installed at the lower end of the adjusting handle 4. The pushing rod 10 passes through the delivery cavity 5 and extends to the outside of the giving way groove 11 opened at the lower end of the endoscope body 1. The inner wall of the giving way groove 11 is evenly spaced with fixing grooves 12 for limiting the pushing rod 10. Considering the disadvantage that some existing endoscopic injection needles generally directly extrude the needle tube and have only one length, and the required length of the needle tube cannot be adjusted, the present invention adjusts the use length of the disposable needle by adjusting the handle 4, the pushing rod 10, the fixing groove 12 and the positioning groove. When the endoscope body 1 enters the ulcer position of the patient, the adjusting handle will be pushed so that the pushing rod 10 of the adjusting handle will be stuck in the fixing groove 12 of the corresponding positioning groove. At this time, the disposable delivery The liquid tube 3 will be pushed by the adjusting grip rod entering the delivery cavity 5, and at this time, the disposable injection needle 2 will push open the anti-blocking plate 6 under the guidance of the guide sleeve 13, and then the medicine for treating the ulcer will be delivered through the syringe or the medical peristaltic pump through the connector 17, and considering that the needle of the existing equipment is easily blocked by foreign matter during the process of the needle tube entering the affected part, thereby affecting the delivery of the medicine, the present invention prevents the disposable injection needle 2 from being blocked during the insertion of the endoscope body 1 into the patient's body through the anti-blocking plate 6, the check block 7, and the reset spring 8. During the insertion, the tissue fluid in the body will not be able to enter the delivery cavity 5 due to the shielding of the anti-blocking plate 6, that is, when external pressure is applied, the shielding plate will not be able to be opened due to the restriction of the check block 7 and the reset spring 8, thereby protecting the disposable needle from being blocked and affecting the delivery of the medicine to the ulcer site.

[0037] Please refer to the figure in particular. When the disposable needle is pushed by adjusting the grip 4, in order to ensure that the disposable needle will not be offset, it will be guided by a guide sleeve 13. The guide sleeve 13 is fixed inside the delivery cavity 5, and one end of the guide sleeve 13 is connected to the port of the delivery cavity 5. The internal size of the guide sleeve 13 matches the external size of the disposable injection needle 2. Due to the existence of the guide sleeve 13, the disposable injection head will not move or deviate when it is displaced from the delivery cavity 5.

[0038] Please refer to the figure in particular. Considering that when the disposable needle protrudes from the delivery cavity 5, the anti-blocking plate 6 is supported by the surface wall of the disposable needle, so that part of the tissue fluid enters the guide sleeve 13 and the delivery cavity 5. The guide sleeve 13 is provided with a sealing ring 14 inside, and the sealing ring 14 is sleeved on the outside of the disposable injection needle 2. Therefore, in order to prevent the tissue fluid from entering when the disposable injection needle 2 is protruded, the guide sleeve 13 and the delivery cavity 5 will be sealed by the sealing ring 14.

[0039] Please refer to the figure in particular. The mutual contact surfaces of the four anti-blocking plates 6 are fixed with silicone extension ends 15, and the material of the silicone extension ends 15 themselves is medical-grade silicone material. The silicone extension ends 15 are provided to assist in sealing the gaps between the four anti-blocking plates 6, thereby further improving the sealing performance of the barrier formed by the anti-blocking plates 6.

[0040] Please refer to the figure in particular. The surface of the endoscope body 1 is also provided with a replacement cavity 18 connected to the interior of the delivery cavity 5. An injection tube 16 runs through the middle of the replacement cavity 18. A connector 17 is connected to the lower end of the injection tube 16. The upper end of the injection tube 16 is connected to the interior of the disposable infusion tube 3. The connector 17 is provided to connect the hose of the syringe or the medical peristaltic pump, so that the liquid medicine used for treatment can enter the interior of the disposable infusion tube 3 through the connecting tube.

[0041] Please refer to the figure in particular. Guide rods 20 for the contact head 19 to be sleeved are fixedly installed on the front and rear sides of the replacement chamber 18. An accordion cover plate 21 is installed between the contact head 19 and the side wall of the replacement chamber 18. The outsides of the two guide rods 20 are sleeved with contact springs 22, and the two ends of the two contact springs 22 are in contact between the replacement chamber 18 and the contact head 19. By setting up the replacement chamber 18, it is convenient for medical staff to install and replace the disposable injection needle 2 and the disposable infusion tube 3 before and after surgery.

[0042] Please pay special attention to the figure, one end of the disposable infusion tube 3 is fixed with a metal patch 24 magnetically adsorbed to the magnet 23, the magnet 23 is installed inside the adsorption block 25, and the adsorption block 25 is rotatably connected to the side end of the adjustment handle 4 through a bearing. By arranging the disposable infusion tube 3 and the adjustment handle 4 to use the magnet 23 for magnetic adsorption, it is convenient for medical staff to dock the disposable infusion tube 3.

[0043] Please refer to the figure in particular. A plurality of rotatable balls 26 are installed on the inner wall of the positioning sleeve 9, and the outer surface of the balls 26 contacts the outer surface of the adjustment handle 4. By arranging the balls 26 on the contact surface of the positioning sleeve 9 and the adjustment handle 4, the friction force is reduced, thereby ensuring the smoothness of the movement of the adjustment handle 4.

[0044] Please pay special attention to the figure, the wall of the disposable infusion tube 3 is provided with a reserved cavity for installing a reinforcing wire 27, and the reinforcing wire 27 is spirally wound and distributed inside the reserved cavity. Considering that the movement of the disposable injection needle 2 needs to be pushed by adjusting the handle 4 to contact the disposable infusion tube 3, there are certain requirements on the firmness of the disposable infusion tube 3, and because the device needs to enter the human body for use, it cannot affect its own flexibility. At this time, the disposable infusion tube 3 will be reinforced by the reinforcing wire 27, and in order to ensure that it does not affect its own flexibility, the reinforcing wire 27 will be distributed in a spiral winding manner to ensure that when the endoscope body 1 is bent, the disposable infusion tube 3 will also complete synchronous bending.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An endoscopic injection needle for peptic ulcer, comprising an endoscope body (1), a disposable injection needle (2), a disposable infusion tube (3), a connector (17), an anti-blocking plate (6) and an adjustable handle (4), characterized in that: The endoscope body (1) is provided with a delivery cavity (5) for installing a disposable injection needle (2), a disposable infusion tube (3) and an adjustment handle (4); the interior of the disposable injection needle (2) is connected to the interior of the disposable infusion tube (3); and the adjustment handle (4) is arranged on one side of the disposable infusion tube (3): Four anti-blocking plates (6) are hingedly connected to the end of the conveying cavity (5), and the inner sides of the four anti-blocking plates (6) are in contact with check blocks (7), and the outer sides of the four anti-blocking plates (6) are in contact with the inner wall of the end of the conveying cavity (5) through return springs (8); A positioning sleeve (9) for mounting the adjusting handle (4) is fixedly mounted at the rear end of the delivery cavity (5) by means of screws, and a push rod (10) is fixedly mounted at the lower end of the adjusting handle (4). The push rod (10) passes through the delivery cavity (5) and extends to the outside of a clearance groove (11) provided at the lower end of the endoscope body (1). The inner wall of the clearance groove (11) is provided with fixed grooves (12) at equal intervals for limiting the position of the push rod (10).

2. The endoscopic injection needle for peptic ulcer according to claim 1, characterized in that: A guide sleeve (13) is fixed inside the delivery cavity (5), and one end of the guide sleeve (13) is connected to the port of the delivery cavity (5). The inner dimensions of the guide sleeve (13) match the outer dimensions of the disposable injection needle (2).

3. The endoscopic injection needle for peptic ulcer according to claim 2, characterized in that: A sealing ring (14) is provided inside the guide sleeve (13), and the sealing ring (14) is sleeved on the outside of the disposable injection needle (2).

4. The endoscopic injection needle for peptic ulcer according to claim 1, characterized in that: The mutually contacting surfaces of the four anti-blocking plates (6) are all fixed with silicone extension ends (15), and the material of the silicone extension ends (15) is medical-grade silicone material.

5. The endoscopic injection needle for peptic ulcer according to claim 1, characterized in that: The surface of the endoscope body (1) is also provided with a replacement cavity (18) which is in communication with the interior of the delivery cavity (5); an injection tube (16) runs through the middle of the replacement cavity (18); a connector (17) is connected to the lower end of the injection tube (16); and the upper end of the injection tube (16) is in communication with the interior of the disposable infusion tube (3).

6. The endoscopic injection needle for peptic ulcer according to claim 5, characterized in that: Guide rods (20) for sleeve engagement with the contact head (19) are fixedly mounted on both the front and rear sides of the replacement chamber (18); an accordion cover plate (21) is mounted between the contact head (19) and the side wall of the replacement chamber (18); and the exteriors of the two guide rods (20) are sleeved with contact springs (22), and the two ends of the two contact springs (22) are in contact between the replacement chamber (18) and the contact head (19).

7. The endoscopic injection needle for peptic ulcer according to claim 1, characterized in that: A metal patch (24) magnetically adsorbed to a magnetic block (23) is fixed to one end of the disposable infusion tube (3); the magnetic block (23) is installed inside an adsorption block (25); and the adsorption block (25) is rotatably connected to the side end of the adjustment handle (4) via a bearing.

8. The endoscopic injection needle for peptic ulcer according to claim 1, characterized in that: A plurality of rotatable balls (26) are mounted on the inner wall of the positioning sleeve (9), and the outer surfaces of the balls (26) are in contact with the outer surface of the adjustment handle (4).

9. The endoscopic injection needle for peptic ulcer according to claim 1, characterized in that: A reserved cavity for installing the reinforcing wire (27) is provided inside the wall of the disposable infusion tube (3), and the reinforcing wire (27) is spirally wound and distributed inside the reserved cavity.

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