A combination medical puncture needle

Abstract

This utility model discloses a combined medical puncture needle, which relates to the field of medical equipment. It includes a main needle tube, an adjustment mechanism, and a protective mechanism. One end of the main needle tube is provided with a hand-held operating handle, and the front end of the main needle tube is provided with an inner sleeve. An installation hole is provided on the inner side of the inner sleeve, and the main needle tube passes through the installation hole on the surface of the inner sleeve. The main needle tube and the inner sleeve form a rotating connection structure, allowing the main needle tube to rotate relative to the inner sleeve around its own axis. The adjustment mechanism is used to rotate the main needle tube, and the protective mechanism is used to protect the exterior of the main needle tube. This combined medical puncture needle, through the adjustment mechanism and the meshing of a transmission gear and a driven gear, converts the external force of the pry block into the rotational power of the main needle tube. The L-shaped structure of the transmission link and the gear fixing frame respectively realizes power transmission and gear fixation.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, specifically a combined medical puncture needle. Background Technology

[0002] Modular medical puncture needles are medical devices composed of multiple replaceable or adjustable components, primarily used for clinical puncture procedures such as biopsies, injections, and drainage. Their design features a modular structure that enhances flexibility and applicability, meeting the needs of different patients and surgical scenarios.

[0003] Publication number CN209018885U describes a puncture needle, including a medical puncture needle, which, by adjusting the extension and contraction of a spring, changes the spring's rigidity to simulate different types of elastic skin. This allows puncture trainees to practice on different types of skin to obtain targeted puncture force and feel. Secondly, this medical puncture needle has a simple structure and is easy to operate, making it suitable for novice trainees. However, the existing puncture needle adjustment mechanism has difficulty in achieving main needle tube rotation control and lacks a stable transmission structure. Medical personnel cannot adjust the main needle tube rotation angle and speed during operation, affecting the puncture operation.

[0004] Therefore, in order to address the existing shortcomings, we conducted research and improvements and proposed a combined medical puncture needle. Utility Model Content

[0005] The purpose of this invention is to provide a combined medical puncture needle to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a combined medical puncture needle, comprising: a main needle tube, an adjustment mechanism and a protective mechanism, wherein one end of the main needle tube is provided with a hand-held operating handle, the front end of the main needle tube is provided with an inner sleeve, the inner side of the inner sleeve is provided with an installation hole, the main needle tube passes through the installation hole on the surface of the inner sleeve, and the main needle tube and the inner sleeve form a rotating connection structure, wherein the main needle tube can rotate relative to the inner sleeve around its own axis;

[0007] The adjustment mechanism is used to rotate the main needle tube;

[0008] The protective mechanism is used to protect the exterior of the main needle tube.

[0009] Furthermore, the adjustment mechanism includes a transmission link, a lever, a positioning ring, a driven gear, a gear retainer, and a transmission gear. The driven gear is provided on the outer side of the inner sleeve, and a transmission gear is meshed on one side of the driven gear. A gear retainer is provided at the front end of the transmission gear, and a positioning ring is provided on one side of the gear retainer. The positioning ring is sleeved on the outer side of the main needle tube. A transmission link is provided at the rear end of the transmission gear, and a lever is provided at one end of the transmission link. The outer surface of the lever is covered with a frosted pattern.

[0010] Furthermore, both the transmission connecting rod and the gear fixing frame are L-shaped structures.

[0011] Furthermore, the main needle tube is inserted into a through hole on the surface of the positioning ring, and the main needle tube can rotate relative to the positioning ring around its own axis.

[0012] Furthermore, the protective mechanism includes a guide rod, a needle tube sleeve, and an insertion hole. The outer side of the positioning ring has an insertion hole, the inner side of the insertion hole has a guide rod inserted, and one side of the guide rod has a needle tube sleeve, which is fitted over the outer side of the main needle tube.

[0013] Furthermore, the guide rod has an L-shaped structure.

[0014] Furthermore, the diameter of the main needle tube is smaller than the diameter of the needle tube sleeve.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The adjustment mechanism of this utility model converts the external force of the lever into the rotational power of the main needle tube through the meshing of the transmission gear and the driven gear. The L-shaped structure of the transmission linkage and the gear fixing frame respectively realizes the power transmission and gear fixing. The positioning ring is sleeved on the main needle tube, which not only ensures the relative rotation of the main needle tube, but also stabilizes its rotation axis. This structure makes the power transmission stable during the rotation adjustment process of the main needle tube, providing a stable and controllable rotation adjustment function for puncture operation, and meeting the requirements of puncture for the rotation angle and position of the needle tube;

[0017] 2. The needle tube sleeve of this utility model is fitted outside the main needle tube, and its diameter is larger than that of the main needle tube, forming a physical protective enclosure. The guide rod is connected to the needle tube sleeve through the insertion hole of the positioning ring. When the main needle tube moves, the guide rod drives the needle tube sleeve to move synchronously. This design ensures that the main needle tube is always isolated from external contact by the needle tube sleeve during the puncture process, avoiding external friction, collision or contamination of the main needle tube, ensuring the integrity and cleanliness of the main needle tube, and improving the safety and reliability of the puncture operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the combined medical puncture needle of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the combined medical puncture needle of this utility model from another perspective;

[0020] Figure 3 This is a schematic diagram of the connection structure between the inner sleeve and the main needle tube of the combined medical puncture needle of this utility model;

[0021] Figure 4 This is a schematic diagram of the combined medical puncture needle protective mechanism and adjustment mechanism of this utility model.

[0022] Figure 5 This is a schematic diagram of the appearance of the present utility model;

[0023] Figure 6 This is a partially enlarged structural diagram of part a of the combined medical puncture needle of this utility model.

[0024] In the diagram: 1. Needle tube sleeve; 2. Main needle tube; 3. Gear fixing bracket; 4. Transmission gear; 5. Driven gear; 6. Transmission connecting rod; 7. Pulley; 8. Hand-held operating handle; 9. Positioning ring; 10. Guide rod; 11. Internal sleeve; 12. Mounting hole; 13. Insertion hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1-5 As shown, a combined medical puncture needle includes: a main needle tube 2, an adjustment mechanism and a protective mechanism. One end of the main needle tube 2 is provided with a hand-held operating handle 8, and the front end of the main needle tube 2 is provided with an inner sleeve 11. The inner side of the inner sleeve 11 is provided with a mounting hole 12. The main needle tube 2 passes through the mounting hole 12 on the surface of the inner sleeve 11, and the main needle tube 2 and the inner sleeve 11 form a rotating connection structure. The main needle tube can rotate relative to the inner sleeve 11 around its own axis.

[0027] The adjustment mechanism is used to rotate the main needle tube 2;

[0028] The protective mechanism is used to protect the exterior of the main needle tube 2.

[0029] The adjustment mechanism includes a transmission link 6, a lever 7, a positioning ring 9, a driven gear 5, a gear fixing frame 3, and a transmission gear 4. The driven gear 5 is provided on the outer side of the inner sleeve 11. The transmission gear 4 is meshed on one side of the driven gear 5. The gear fixing frame 3 is provided at the front end of the transmission gear 4. The positioning ring 9 is provided on one side of the gear fixing frame 3. The positioning ring 9 is sleeved on the outer side of the main needle tube 2. The transmission link 6 is provided at the rear end of the transmission gear 4. The lever 7 is provided at one end of the transmission link 6. The outer side of the lever 7 is covered with a frosted pattern.

[0030] For the rest, hold the hand-held operating handle 8 and move the combined medical puncture needle to the puncture site. At this time, observe the position of the needle tube sleeve 1 to ensure that it is in the initial protective state outside the main needle tube 2. The medical staff's fingers act on the lever 7. Because the lever 7 has a frosted pattern on the outside, it provides stable friction. The lever 7 drives the transmission linkage 6 to move. The transmission linkage 6 has an L-shaped structure. Its movement is transmitted to the transmission gear 4, causing the transmission gear 4 to rotate around its own axis.

[0031] The transmission gear 4 meshes with the driven gear 5, which is fixed to the outside of the inner sleeve 11, thereby driving the inner sleeve 11 to rotate. The main needle tube 2 passes through the mounting hole 12 of the inner sleeve 11, and the two form a rotating connection structure. When the inner sleeve 11 rotates, the main needle tube 2 rotates synchronously around its own axis. The positioning ring 9 is sleeved on the outside of the main needle tube 2, and the main needle tube 2 passes through the through hole of the positioning ring 9 and can rotate relative to it, ensuring the stability of the rotation process.

[0032] Simultaneously, the protective mechanism operates. The guide rod 10 has an L-shaped structure, with one end inserted into the insertion hole 13 of the positioning ring 9 and the other end connected to the needle tube sleeve 1. When the main needle tube 2 rotates, the positioning ring 9 moves synchronously, driving the guide rod 10 through the insertion hole 13. The guide rod 10 pushes the needle tube sleeve 1, which is fitted on the outside of the main needle tube 2. Its diameter is larger than that of the main needle tube 2, and it always wraps around the outside of the main needle tube 2 during movement, preventing the main needle tube 2 from directly contacting the outside. The gear fixing bracket 3 has an L-shaped structure, fixing the position of the transmission gear 4 and ensuring the meshing stability of the transmission gear 4 and the driven gear 5. Ultimately, the main needle tube 2 is accurately rotated for puncture, and the needle tube sleeve 1 provides synchronous protection.

[0033] like Figures 1-5 As shown, a combined medical puncture needle has a protective mechanism including a guide rod 10, a needle tube sleeve 1, and an insertion hole 13. The insertion hole 13 is provided on the outer side of the positioning ring 9, and the guide rod 10 is inserted into the inner side of the insertion hole 13. The needle tube sleeve 1 is provided on one side of the guide rod 10 and is sleeved on the outer side of the main needle tube 2.

[0034] The rest are positioned by holding the operating handle 8 to locate the puncture position, operating the lever 7, the lever 7 drives the transmission gear 4 to rotate via the transmission linkage 6, the transmission gear 4 drives the driven gear 5, the driven gear 5 causes the inner sleeve 11 to rotate, the main needle tube 2 rotates with the inner sleeve 11, the positioning ring 9 is fitted on the outside of the main needle tube 2, the main needle tube 2 passes through its through hole and rotates, ensuring the stability of the rotation axis of the main needle tube 2;

[0035] The protective mechanism works in coordination. The guide rod 10 inside the insertion hole 13 on the outside of the positioning ring 9 moves with the positioning ring 9. The guide rod 10 drives the needle tube sleeve 1. The needle tube sleeve 1 is fitted over the main needle tube 2 and has a larger diameter than the main needle tube 2. During puncture, it covers the outside of the main needle tube 2. When the main needle tube 2 rotates and advances, the needle tube sleeve 1 moves synchronously to protect the main needle tube 2 from friction damage from external tissues. The gear fixing frame 3 fixes the transmission gear 4 and maintains the meshing state between the transmission gear 4 and the driven gear 5 to ensure stable power transmission.

[0036] Throughout the process, the adjustment mechanism achieves the rotational adjustment of the main needle tube 2 through the linkage of the lever 7, transmission link 6, transmission gear 4, and driven gear 5; the protective mechanism forms external protection for the main needle tube 2 by relying on the cooperation of the guide rod 10, the needle tube sleeve 1, and the positioning ring 9. Each component operates according to the design structure. The L-shaped structure of the transmission link 6 and the gear fixing frame 3 plays a role in the transmission and fixing links, respectively, and finally completes the puncture operation to meet the biopsy requirements.

[0037] Working principle: When using this combined medical puncture needle, when the lever 7 is subjected to external force, it drives the transmission linkage 6 to move. Since the transmission linkage 6 is connected to the transmission gear 4, it causes the transmission gear 4 to rotate. The transmission gear 4 meshes with the driven gear 5. The driven gear 5 is fixed to the outside of the inner sleeve 11, thereby driving the inner sleeve 11 to rotate. The main needle tube 2 passes through the mounting hole 12 of the inner sleeve 11 and forms a rotatable connection. When the inner sleeve 11 rotates, the main needle tube 2 rotates around its own axis through the cooperation of the positioning ring 9. The positioning ring 9 is sleeved on the outside of the main needle tube 2, and the main needle tube 2 can rotate relative to the positioning ring 9 to ensure the stability of the adjustment process.

[0038] Then, the needle tube sleeve 1 is fitted outside the main needle tube 2, and its diameter is larger than that of the main needle tube 2. The guide rod 10 has an L-shaped structure, with one end inserted into the insertion hole 13 of the positioning ring 9 and the other end connected to the needle tube sleeve 1. When the main needle tube 2 rotates or moves, the guide rod 10 guides the needle tube sleeve 1 to move synchronously through the cooperation of the insertion hole 13. The needle tube sleeve 1 can rotate relative to the inner sleeve 11 around its own axis. During the puncture operation, the needle tube sleeve 1 protects the outside of the main needle tube 2 and prevents the main needle tube 2 from directly contacting the outside environment and causing damage or contamination. The gear fixing frame 3 has an L-shaped structure and fixes the position of the transmission gear 4 to ensure the stability of gear meshing during transmission. The whole system controls the rotation of the main needle tube 2 through the adjustment mechanism. With the needle tube sleeve 1 and the guide rod 10 of the protective mechanism, the operation and protection functions of the puncture needle are realized.

[0039] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A combination medical puncture needle comprising: The main needle tube (2), adjustment mechanism and protective mechanism are characterized in that a hand-held operating handle (8) is provided at one end of the main needle tube (2), an inner sleeve (11) is provided at the front end of the main needle tube (2), an installation hole (12) is provided on the inner side of the inner sleeve (11), the main needle tube (2) passes through the installation hole (12) on the surface of the inner sleeve (11), and the main needle tube (2) and the inner sleeve (11) form a rotating connection structure, and the main needle tube (2) can rotate relative to the inner sleeve (11) around its own axis; The adjustment mechanism is used to rotate the main needle tube (2); The protective mechanism is used to protect the exterior of the main needle tube (2).

2. The combination medical puncture needle of claim 1, wherein The adjustment mechanism includes a transmission link (6), a lever (7), a positioning ring (9), a driven gear (5), a gear fixing frame (3), and a transmission gear (4). The driven gear (5) is provided on the outside of the inner sleeve (11). The transmission gear (4) is meshed on one side of the driven gear (5). The gear fixing frame (3) is provided at the front end of the transmission gear (4). The positioning ring (9) is provided on one side of the gear fixing frame (3). The positioning ring (9) is sleeved on the outside of the main needle tube (2). The transmission link (6) is provided at the rear end of the transmission gear (4). The lever (7) is provided at one end of the transmission link (6). The lever (7) is covered with a frosted pattern on its exterior.

3. The combination medical puncture needle of claim 2, wherein Both the transmission link (6) and the gear fixing frame (3) are L-shaped structures.

4. The combination medical puncture needle of claim 2, wherein The main needle tube (2) is inserted into the through hole on the surface of the positioning ring (9), and the main needle tube (2) can rotate relative to the positioning ring (9) around its own axis.

5. The combination medical puncture needle of claim 2, wherein The protective mechanism includes a guide rod (10), a needle tube sleeve (1), and an insertion hole (13). The outer side of the positioning ring (9) is provided with an insertion hole (13), and the inner side of the insertion hole (13) is provided with a guide rod (10). A needle tube sleeve (1) is provided on one side of the guide rod (10), and the needle tube sleeve (1) is sleeved on the outer side of the main needle tube (2).

6. The combination medical puncture needle of claim 5, wherein The guide rod (10) has an L-shaped structure.

7. The combination medical puncture needle of claim 5, wherein The diameter of the main needle tube (2) is smaller than the diameter of the needle tube sleeve (1).

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