Submucosal injection needle for disposable endoscope

Abstract

The utility model relates to the technical field of submucosal injection needles, and discloses a submucosal injection needle for a disposable endoscope, which comprises a handle, an infusion tube is fixedly connected inside the handle, one end of the infusion tube is fixedly connected with an end head, the inner wall of the handle is slidably connected with an infusion push tube, and the end head is fixedly connected with an end head. The end of the infusion tube is fixedly connected to the interior of the infusion push tube, a telescopic hose is arranged in the middle of the infusion tube, a clamping assembly is arranged in the infusion push tube and used for fixing the infusion push tube, and a needle is fixedly connected to one end of the infusion push tube. According to the utility model, the problem that the injection needle is difficult to adapt to diversified clinical requirements due to difficulty in multi-section adjustment according to different mucous membrane thicknesses and operation requirements is solved, and the purposes of accurately controlling the extension length of the needle head according to the mucous membrane thickness and the specific lesion position and ensuring that the needle head accurately pierces into the submucous membrane are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of submucosal injection needle, especially to a disposable endoscope submucosal injection needle. BACKGROUND

[0002] The disposable endoscope submucosal injection needle is a medical instrument used in endoscopic surgery, mainly used for injecting physiological saline, drugs or dyes into the submucosal tissue of the digestive tract to assist in endoscopic submucosal dissection (ESD), polypectomy and other operations. Its core function is to elevate the mucosa by injecting liquid, forming a safe space, reducing damage to deep tissue during resection, and reducing the risk of perforation and bleeding. At the same time, the single-use design of the needle ensures sterility and prevents cross-infection, protecting patient safety. In addition, the disposable needle has a simple structure and is easy to operate, which helps doctors accurately control the depth of puncture and injection position, improves surgical efficiency and safety, and is an essential tool in endoscopic treatment.

[0003] When using the traditional endoscopic submucosal injection needle, first connect the needle to the syringe to ensure the sterility and integrity of the instrument. Then, insert the needle through the instrument channel of the endoscope and position it to the target mucosal area. Under the guidance of the endoscope, the doctor pushes the handle to extend the needle, accurately punctures into the submucosal layer, and then injects physiological saline, drugs or dye solution to elevate the mucosa, form a safe separation layer, and assist in the resection or marking of the lesion. After the operation is completed, the needle is retracted into the protective sleeve to ensure that the tissue or endoscope channel is not damaged when the instrument is withdrawn. The entire process requires the doctor to accurately control the extension and retraction of the needle and the depth of injection.

[0004] The traditional endoscopic submucosal injection needle can only be fixed in a single length, and the needle is difficult to adjust in multiple segments according to different mucosal thickness and operation requirements, making the fixed length needle too long or too short, and difficult to adapt to diversified clinical needs. UTILITY MODEL CONTENT

[0005] To make up for the above shortcomings, the utility model provides a disposable endoscope submucosal injection needle, aiming to improve the difficulty of traditional endoscopic submucosal injection needle to adjust in multiple segments according to different mucosal thickness and operation requirements, and thus difficult to adapt to diversified clinical needs.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a kind of disposable endoscope submucous injection needle, including handle, the inside fixed connection of handle has infusion tube, one end of infusion tube is fixedly connected with end, the inner wall sliding connection of handle has infusion push tube, the inside fixed connection of infusion tube end is in the inside of infusion push tube, the middle part of infusion tube is provided with flexible hose, the inside of infusion push tube is provided with clamping assembly, the clamping assembly is used to fix infusion push tube, one end of infusion push tube is fixedly connected with needle, the outer wall side of handle is provided with protection assembly, the protection assembly is used to protect needle,

[0007] The clamping assembly includes a spring sheet, the outer wall of the spring sheet is slidingly connected in the inside of the infusion push tube, a sliding groove is formed in the inside of the infusion push tube, a pressing block is fixedly connected to one side of the outer wall of the spring sheet, three clamping grooves are formed in the inside of the handle.

[0008] Further, the protection assembly includes an outer shell, the outer wall of the outer shell is fixedly connected to the outer wall of the handle, a protective sleeve is fixedly connected to the outer wall of the outer shell, and a sealing cover is slidingly connected to one end of the protective sleeve.

[0009] Further, an auxiliary rod is fixedly connected to the outer wall of the handle, and a clockwork is fixedly connected to the outer wall of the infusion push tube.

[0010] Further, one end of the clockwork is fixedly connected to the inner wall of the handle, and the clockwork is used to pull the infusion push tube back to the original position.

[0011] Further, the needle is slidingly connected to the inner wall of the protective sleeve, and the protective sleeve is used to protect the needle.

[0012] Further, the outer part of the pressing block is slidingly connected to the inside of the clamping groove, and the clamping groove is used to limit the pressing block.

[0013] Further, the outer wall of the spring sheet is slidingly connected to the inside of the sliding groove, and the sliding groove is used to limit the spring sheet.

[0014] Further, one end of the infusion tube is connected to the needle, and the infusion tube is used to deliver medicine to the needle.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, first, the infusion tube, the end and the flexible hose convey the liquid medicine to the needle, then press the pressing block to cooperate with the spring sheet, the sliding slot and the clamping groove to drive the infusion push tube to slide in the handle, realize the adjustment of the needle, solve the problem that the injection needle is difficult to adjust in multiple sections according to different mucosa thickness and operation demand, and further difficult to adapt to diversified clinical demand, reach the length of the needle can be accurately controlled according to the thickness of the mucosa and the specific lesion position, ensure that the needle is accurately inserted into the submucosa.

[0017] 2. In the utility model, first, the auxiliary rod cooperates with the handle to facilitate the use of the needle, then cooperates with the protective sleeve and the shell to realize the protection of the needle, then cooperates with the clock spring to drive the infusion push tube to return to the original place, reaches the convenient use, and the needle can be quickly recycled, the needle is collected into the protective sleeve immediately after the operation is completed, prevents the needle from being exposed to cause secondary damage to the surrounding tissue or endoscope channel. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structure schematic diagram of a disposable endoscope submucosal injection needle is proposed for the utility model;

[0019] Figure 2 A handle internal structure schematic diagram of a disposable endoscope submucosal injection needle is proposed for the utility model;

[0020] Figure 3 A infusion push tube one side structure schematic diagram of a disposable endoscope submucosal injection needle is proposed for the utility model;

[0021] Figure 4 A protective sleeve one side structure schematic diagram of a disposable endoscope submucosal injection needle is proposed for the utility model.

[0022] Legend:

[0023] 1, handle; 2, infusion tube; 3, end; 4, flexible hose; 5, infusion push tube; 6, needle; 7, protective sleeve; 8, sliding slot; 9, spring sheet; 10, pressing block; 11, clock spring; 12, auxiliary rod; 13, sealing cover; 14, shell; 15, clamping groove. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0025] Refer toFigure 1 Figure 4 The utility model provides an embodiment: a kind of disposable endoscope submucous injection needle, including handle 1, the inside fixed connection of handle 1 has infusion tube 2, the one end fixed connection of infusion tube 2 has end 3, and the inside of needle head 6 is transported to by infusion tube 2 and end 3 with liquid medicine, the inner wall sliding connection of handle 1 has infusion push tube 5, by the movement of infusion push tube 5 in the inner wall of handle 1, to slide in the inside of protective sleeve 7 by infusion push tube 5 drive needle head 6, the inside fixed connection of infusion tube 2's end portion is in infusion push tube 5, the middle part of infusion tube 2 is provided with flexible hose 4, and flexible hose 4 is conveniently moved to infusion push tube 5, the inside of infusion push tube 5 is provided with clamping assembly, clamping assembly is used to fix infusion push tube 5, one end of infusion push tube 5 is fixedly connected with needle head 6, the outer wall side of handle 1 is provided with protection assembly, and protection assembly is used to protect needle head 6;

[0026] Clamping assembly includes spring sheet 9, the outer wall sliding connection of spring sheet 9 is in the inside of infusion push tube 5, the inside of infusion push tube 5 is opened with sliding slot 8, the outer wall side fixed connection of spring sheet 9 has pressing block 10, the inside of handle 1 is opened with three clamping grooves 15, and pressing block 10 is graded and positioned by clamping groove 15, and the rebound of spring sheet 9 can promote pressing block 10 to move to the inside of clamping groove 15, protection assembly includes shell 14, the outer wall side fixed connection of shell 14 is in the outer wall of handle 1, the outer wall fixed connection of shell 14 has protective sleeve 7, the one end sliding connection of protective sleeve 7 has sealing cover 13, and protective sleeve 7 is conveniently protected to needle head 6 by shell 14 and, and the end of protective sleeve 7 is protected by sealing cover 13, to seal the inside of protective sleeve 7.

[0027] Refer to Figure 1 , Figure 2 And Figure 4 The outer wall fixed connection of handle 1 has auxiliary rod 12, the outer wall fixed connection of infusion push tube 5 has clockwork 11, and clockwork 11 is conveniently driven to slide in the inside of handle 1 by infusion push tube 5, and then needle head 6 can be driven to move back to the inside of protective sleeve 7, the one end fixed connection of clockwork 11 is in the inner wall of handle 1, and clockwork 11 is used to pull infusion push tube 5 back to original place, the outside sliding connection of needle head 6 is in the inner wall of protective sleeve 7, and protective sleeve 7 is used to protect needle head 6, the outside sliding connection of pressing block 10 is in the inside of clamping groove 15, and clamping groove 15 is used to limit pressing block 10, the outer wall sliding connection of spring sheet 9 is in the inside of sliding slot 8, and sliding slot 8 is used to limit spring sheet 9, one end of infusion tube 2 is connected with needle head 6, and infusion tube 2 is used to transport medicine to needle head 6.

[0028] ​Working principle: when the disposable endoscope mucosa injection needle is needed to be used, firstly, the liquid medicine is delivered to the inside of the needle head 6 through the infusion pipe 2 and the end head 3, then the pressing block 10 is pressed to slide in the inside of the handle 1, so that the spring piece 9 is contracted, at this time, when the pressing block 10 slides to the inside of the infusion push pipe 5, the infusion push pipe 5 can be pushed to slide in the inside of the handle 1, at the same time, the movement of the infusion push pipe 5 makes the clockwork 11 contract, then the infusion push pipe 5 drives the needle head 6 to slide in the inside of the protective sleeve 7, so that the end of the needle head 6 moves out of the inside of the protective sleeve 7, thereby facilitating the use, in the process, the three clamping grooves 15 are used to adjust the needle head 6, when the needle head 6 is used, the pressing block 10 is pressed to slide in the inside of the clamping groove 15, when the pressing block 10 slides to the inside of the infusion push pipe 5, the clockwork 11 is no longer stressed to rebound, thereby driving the infusion push pipe 5 to quickly return to the initial position, so that the needle head 6 returns to the inside of the protective sleeve 7, without manual operation.

[0029] Finally, it should be noted that: the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement is carried out to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be contained in the protection scope of the utility model.

Claims

1. A disposable endoscopic submucosal injection needle, comprising a handle (1), characterized in that: An infusion tube (2) is fixedly connected inside the handle (1). One end of the infusion tube (2) is fixedly connected to a tip (3). An infusion push tube (5) is slidably connected to the inner wall of the handle (1). The end of the infusion tube (2) is fixedly connected to the inside of the infusion push tube (5). A telescopic hose (4) is provided in the middle of the infusion tube (2). A snap-fit ​​assembly is provided inside the infusion push tube (5). The snap-fit ​​assembly is used to fix the infusion push tube (5). One end of the infusion push tube (5) is fixedly connected to a needle (6). A protective assembly is provided on one side of the outer wall of the handle (1). The protective assembly is used to protect the needle (6). The snap-fit ​​assembly includes a spring sheet (9), the outer wall of which is slidably connected to the inside of the infusion push tube (5), the inside of which is provided with a sliding groove (8), a pressure block (10) is fixedly connected to one side of the outer wall of the spring sheet (9), and the inside of the handle (1) is provided with three snap-fit ​​grooves (15).

2. The disposable endoscopic submucosal injection needle according to claim 1, characterized in that: The protective assembly includes a housing (14), one side of the outer wall of the housing (14) is fixedly connected to the outer wall of the handle (1), a protective sleeve (7) is fixedly connected to the outer wall of the housing (14), and a sealing cap (13) is slidably connected to one end of the protective sleeve (7).

3. The disposable endoscopic submucosal injection needle according to claim 2, characterized in that: An auxiliary rod (12) is fixedly connected to the outer wall of the handle (1), and a spring (11) is fixedly connected to the outer wall of the infusion push tube (5).

4. The disposable endoscopic submucosal injection needle according to claim 3, characterized in that: One end of the spring (11) is fixedly connected to the inner wall of the handle (1), and the spring (11) is used to pull the infusion push tube (5) back to its original position.

5. A disposable endoscopic submucosal injection needle according to claim 2, characterized in that: The needle (6) is slidably connected to the inner wall of the protective sleeve (7), which is used to protect the needle (6).

6. A disposable endoscopic submucosal injection needle according to claim 2, characterized in that: The pressure block (10) is externally slidably connected to the inside of the slot (15), which is used to limit the pressure block (10).

7. A disposable endoscopic submucosal injection needle according to claim 2, characterized in that: The outer wall of the spring sheet (9) is slidably connected to the inside of the slide groove (8), which is used to limit the movement of the spring sheet (9).

8. A disposable endoscopic submucosal injection needle according to claim 2, characterized in that: One end of the infusion tube (2) is connected to the needle (6), and the infusion tube (2) is used to deliver drugs to the needle (6).

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