Novel injection needle for tumor preoperative evaluation
By designing a novel injection needle comprising an operating rod, an outer tube, an inner tube, and a needle tip, the problem of insufficient accuracy in preoperative tumor assessment was solved, achieving simple and accurate tumor depth assessment and effective hemostasis.
Patent Information
- Application Number
- CN202423062307.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2034-12-12
AI Technical Summary
The lack of a dedicated injection needle for preoperative tumor assessment in the current technology leads to insufficient accuracy in tumor depth assessment.
A novel injection needle was designed, comprising an operating rod, an outer tube, an inner tube, and a needle. The inner rod is moved by the positioning rod, which pushes the needle to insert into the lesion. Water is injected through a syringe for evaluation. An anti-backflow rubber sleeve is set to prevent water backflow, and hemostatic cotton is used for hemostasis.
It achieves accuracy and ease of operation in preoperative tumor assessment, prevents water backflow, and improves hygiene and hemostasis.
Smart Images
Figure CN223900829U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of medical apparatus and instruments, especially a novel injection needle for preoperative evaluation of tumor. BACKGROUND
[0002] When preoperatively evaluating tumor, the depth of tumor needs to be evaluated to grasp the indication. However, the depth is usually evaluated by CT, nuclear magnetic resonance, ultrasound and the like. This evaluation method has subjectivity and is strict in operation, and the accuracy of diagnosis is not high.
[0003] One important method for preoperatively evaluating tumor under endoscope is submucosal injection. If the water injected into the submucosa can lift the lesion, it indicates that the lesion is in an early stage. If the lesion cannot be lifted, it may be in a late stage. The prior art lacks an injection needle that can be used for preoperative evaluation alone. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a novel injection needle for preoperative evaluation of tumor, solving the problem that the prior art lacks an injection needle that can be used for preoperative evaluation alone.
[0005] To solve the above technical problem, the utility model adopts the following technical scheme:
[0006] The utility model relates to a novel injection needle for preoperative evaluation of tumor, which comprises an operating rod, one end of the operating rod is provided with an outer tube, the inner part of the outer tube is provided with an inner tube, and one end of the inner tube away from the operating rod is provided with a needle head; the operating rod comprises an outer rod body, one end of the outer rod body is connected with the outer tube, the inner part of the outer rod body is provided with an inner rod body, one end of the inner rod body is connected with the inner tube, the other end of the inner rod body is connected with a syringe containing water, and a positioning rod is arranged on the outer wall of the inner rod body.
[0007] Further, a sliding groove is arranged on the outer wall of the outer rod body, a limiting groove is arranged on one side of the sliding groove, and the positioning rod is limited by the limiting groove after moving along the sliding groove.
[0008] Still further, the limiting grooves are arranged on the positions close to the two ends of the sliding groove.
[0009] Still further, an anti-reflux rubber sleeve is arranged on one end of the inner tube close to the needle head, and the anti-reflux rubber sleeve is arranged in the liquid storage cavity of the needle head.
[0010] Further, the anti-backflow rubber sleeve comprises a main body, one end of the main body is connected with the inner tube, and the other end of the main body is provided with a plurality of movable petals, and end portions of the movable petals are provided with extension pieces.
[0011] Further, the number of the movable petals is two, and the two movable petals are symmetrically arranged.
[0012] Further, the outer tube is provided with a pressing cover at an end away from the operating rod, and the pressing cover is internally provided with hemostatic cotton.
[0013] Compared with the prior art, the novel injection needle for preoperative evaluation of tumors has the following beneficial technical effects:
[0014] The utility model discloses a novel injection needle specially used for preoperative evaluation of tumors, which comprises an operating rod, an outer tube, an inner tube and a needle head. The operating rod comprises an outer rod body, an inner rod body and a positioning rod. One end of the outer rod body is connected with the outer tube. One end of the inner rod body is connected with the inner tube. The other end of the inner rod body is connected with a syringe filled with water. The inner tube is provided with the needle head at an end away from the operating rod. The inner rod body is driven to move towards the side close to the outer tube by the positioning rod. The inner rod body pushes the inner tube to move. The inner tube pushes the needle head to extend from the end of the outer tube. The needle head is inserted into a lesion position. Water is injected into the inner tube by the syringe to perform preoperative evaluation. The operation is simple and convenient. The anti-backflow rubber sleeve is arranged to prevent water from flowing back. The pressing cover with hemostatic cotton is arranged to press and stop bleeding of a wound. BRIEF DESCRIPTION OF DRAWINGS
[0015] The utility model will be further described in connection with the drawings.
[0016] Figure 1 It is a front view of the novel injection needle for preoperative evaluation of tumors of the utility model.
[0017] Figure 2 It is a sectional view of the novel injection needle for preoperative evaluation of tumors of the utility model.
[0018] Figure 3 It is a structural schematic view of the novel injection needle for preoperative evaluation of tumors of the utility model located inside the outer tube.
[0019] Figure 4 It is a structural schematic view of the novel injection needle for preoperative evaluation of tumors of the utility model located outside the outer tube.
[0020] Figure 5 It is a three-dimensional structural schematic view of the operating rod of the utility model.
[0021] Figure 6 It is an enlarged view of A in the middle. Figure 3
[0022] Figure 7 The utility model discloses a three-dimensional structure diagram of anti -reverse flow rubber sleeve.
[0023] Mark explanation: 1, operating rod, 1-1, outer rod body, 1-1-1, limit groove, 1-1-2, sliding groove, 1-2, inner rod body, 1-3, positioning rod, 2, outer tube, 3, inner tube, 4, needle, 4-1, liquid storage cavity, 5, anti -reverse flow rubber sleeve, 5-1, main part, 5-2, movable petal, 5-3, extension piece, 6, press cover. Specific embodiments
[0024] As Figures 1-7 The utility model discloses a novel injection needle for tumor preoperative evaluation, including operating rod 1, one end of operating rod 1 is connected with outer tube 2, the inside of outer tube 2 is provided with inner tube 3, and the needle 4 of inner tube 3 is away from one end of operating rod 1.
[0025] As Figure 5 Operating rod 1 includes outer rod body 1-1, one end of outer rod body 1-1 is connected with outer tube 2, and inner rod body 1-2 is movably installed in the inside of outer rod body 1-1, one end of inner rod body 1-2 is connected with inner tube 3, the other end of inner rod body 1-2 is connected with the syringe filled with water, and positioning rod 1-3 is connected on the outer wall of inner rod body 1-2, sliding groove 1-1-2 is formed on the outer wall of outer rod body 1-1, limit groove 1-1-1 is connected to the position close to both ends of the side of sliding groove 1-1-2, and positioning rod 1-3 is limited after moving along sliding groove 1-1-2 through limit groove 1-1-1.
[0026] As Figure 6 Anti -reverse flow rubber sleeve 5 is connected on the one end close to needle 4 of inner tube 3, and anti -reverse flow rubber sleeve 5 is arranged in the liquid storage cavity 4-1 of needle 4.
[0027] As Figure 7 Anti -reverse flow rubber sleeve 5 includes the main part 5-1 of cylinder, one end of main part 5-1 is connected with inner tube 3, two movable petals 5-2 are arranged on the other end of main part 5-1, two movable petals 5-2 are symmetrically arranged, and extension piece 5-3 is connected to the end of movable petal 5-2, anti -reverse flow rubber sleeve 5 adopts the flexible silica gel hose or rubber hose, when injecting water into inner tube 3 through syringe, two movable petals 5-2 open under the action of water pressure, water enters needle 4, and after stopping injection, pressure disappears, and two movable petals 5-2 are attached together, to prevent the water in liquid storage cavity 4-1 from flowing into inner tube 3.
[0028] The outer tube 2 is connected with a pressing cover 6 away from one end of the operating rod 1, and the inside of the pressing cover 6 is bonded with hemostatic cotton; after injection is completed, the inner tube 3 is moved by the inner rod body 1-2 to make the needle 4 return to the inner tube 3, the pressing cover 6 is attached to the needle hole, the pressing cover 6 presses the wound, the hemostatic cotton stops bleeding at the needle hole, external bacteria are avoided, and the hygiene of injection is improved.
[0029] The working process of the utility model is as follows:
[0030] When the tumor is preoperatively evaluated, the method of submucosal injection is adopted, the specific operation is that the positioning rod 1-3 is held, the positioning rod 1-3 is rotated to separate the positioning rod 1-3 from the limiting groove 1-1-1, then the inner rod body 1-2 is moved to the side close to the outer tube 2 by the positioning rod 1-3, the inner tube 3 is moved by the inner rod body 1-2, the needle 4 is moved out from the end of the outer tube 2 by the inner tube 3, and the needle 4 is inserted into the lesion position; finally, water is injected into the inner tube 3 by the syringe, if the water injected by the submucosal injection can lift the lesion, it is explained that the lesion is an early lesion.
[0031] The above-described embodiments are only preferred modes of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical scheme of the utility model made by the person skilled in the art without departing from the design spirit of the utility model should fall within the protection scope determined by the claim book of the utility model.
Claims
1. A novel injection needle for preoperative assessment of tumors, characterized in that: The utility model provides an injection device, including operating rod (1), one end of operating rod (1) is provided with outer tube (2), the inside of outer tube (2) is provided with inner tube (3), and the needle (4) is provided with the needle (4) away from one end of operating rod (1) of inner tube (3), and operating rod (1) includes outer rod body (1-1), one end of outer rod body (1-1) is connected with outer tube (2), the inside of outer rod body (1-1) is provided with inner rod body (1-2), one end of inner rod body (1-2) is connected with inner tube (3), and the other end of inner rod body (1-2) is connected with the syringe of being equipped with water, and the outer wall of inner rod body (1-2) is provided with positioning rod (1-3).
2. The novel injection needle for preoperative assessment of tumors according to claim 1, characterized in that: The outer wall of outer rod body (1-1) is provided with sliding groove (1-1-2), one side of sliding groove (1-1-2) is provided with limiting groove (1-1-1), positioning rod (1-3) moves along sliding groove (1-1-2) and is limited by limiting groove (1-1-1).
3. The novel injection needle for preoperative assessment of tumors according to claim 2, characterized in that: The limiting groove (1-1-1) is arranged on the position close to both ends of the sliding groove (1-1-2).
4. The novel injection needle for preoperative assessment of tumor according to claim 1, characterized in that: The end close to the needle (4) of the inner tube (3) is provided with an anti-reflux rubber sleeve (5), and the anti-reflux rubber sleeve (5) is arranged in the liquid storage cavity (4-1) of the needle (4).
5. The novel injection needle for preoperative assessment of tumors according to claim 4, characterized in that: The anti-reflux rubber sleeve (5) includes a main body (5-1), one end of the main body (5-1) is connected with the inner tube (3), the other end of the main body (5-1) is provided with a plurality of movable petals (5-2), and the end of the movable petals (5-2) is provided with an extension piece (5-3).
6. The novel injection needle for preoperative assessment of tumors according to claim 5, characterized in that: The number of movable petals (5-2) is two, and the two movable petals (5-2) are symmetrically arranged.
7. The novel injection needle for preoperative assessment of tumors according to claim 1, characterized in that: The end away from the operating rod (1) of the outer tube (2) is provided with a pressing cover (6), and the inside of the pressing cover (6) is provided with a hemostatic cotton.