Medical bottle inserting needle with positioning and limiting function

Abstract

The application relates to the technical field of medical devices and discloses a medical bottle inserting needle with positioning and limiting, which comprises a bottle inserting device, a mounting cover slidingly connected to the top of the bottle inserting device, a positioning mechanism fixedly connected to the front side of the bottle inserting device, a assembling mechanism detachably connected to the rear side of the bottle inserting device, a rotating block, a assembling piece rotatably connected to the outer side of the rotating block, a clamping groove formed in the assembling piece, a clamping block fixedly connected to the rear side of the bottle inserting device, a guide pipe fixedly connected to the rear side of the bottle inserting device, two assembling cavities formed in the bottle inserting device and a connecting block fixedly connected to the outer side of the rotating block. The clamping block, the clamping groove and the guide pipe are matched with each other, the assembling piece is driven to rotate and to be clamped and assembled in a position, the function of assembling and fixing various components of the bottle inserting device is achieved, and the bottle inserting device can be quickly assembled and installed.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a medical intubation needle with positioning and limiting function. Background Technology

[0002] Medical infusion needles are standard basic instruments used in infusion and medication preparation processes. They primarily rely on the tip of the needle to pierce the stopper of a medical vial to establish an internal fluid channel. In actual infusion preparation operations, the insertion and connection actions must be smooth, and the needle tip must remain within a reasonable depth range after puncture.

[0003] This medical vial insertion needle relies on a combination of a needle body and a limiting structure to perform puncture. During puncture, the limiting structure fits against the end face of the vial opening, limiting the maximum insertion depth of the needle. The physical locking mechanism prevents the needle from extending too far, thus preventing puncture of the bottom of the vial and damage to the inner rubber stopper. Ultimately, it achieves a stable and sealed connection, avoiding leakage of the medication and ensuring the safety of infusion preparation.

[0004] Existing vial insertion needles lack a limiting and positioning structure to adapt to vial inserter assembly, which cannot achieve quick positioning and calibration-free installation. This makes it difficult to adapt to vial inserter housings of different specifications, increasing assembly labor costs and time. Therefore, this invention proposes a medical vial insertion needle with positioning and limiting to solve the shortcomings of the prior art. Summary of the Invention

[0005] In view of the fact that in the existing technology, it is difficult to quickly align and lock the medical infusion needle during assembly, which relies on repeated manual calibration and adjustment and greatly slows down the overall assembly efficiency of the infusion device, the present invention provides a medical infusion needle with positioning limit that has an improved structure and can effectively solve the above problems.

[0006] The present invention provides a medical vial needle with positioning and limiting, comprising: a vial inserter, and a mounting cap slidably connected to the top of the vial inserter, wherein a positioning mechanism is fixedly connected to the front side of the vial inserter, and an assembly mechanism is detachably connected to the rear side of the vial inserter. The assembly mechanism includes a rotating block, an assembly part rotatably connected to the outer side of the rotating block, a locking groove opened inside the assembly part, a locking block fixedly connected to the rear side of the bottle inserter, a sealing component slidably connected to the rear side of the bottle inserter, two assembly cavities opened inside the bottle inserter, a connecting block fixedly connected to the outer side of the rotating block, and a sealing gasket fixedly connected to the outer wall of the bottle inserter.

[0007] The sealing assembly includes a guide tube, a connector is fixedly connected to the outside of the guide tube, the outside of the connector is slidably connected to the inside of the bottle inserter, and a telescopic sleeve is slidably connected to the outside of the connector. The telescopic sleeve has a semi-open structure and two rubber rings are fitted on the outside of the telescopic sleeve.

[0008] The connecting block is cam-shaped, and its eccentric side abuts against the interior of the assembly.

[0009] The engaging groove is slidably connected to the outer wall of the engaging block, and the engaging groove is also slidably connected to the outer wall of the guide tube.

[0010] The two assembly cavities are installed horizontally and parallel inside the bottle inserter, and the interior of the two assembly cavities is used to install the fixing piece.

[0011] The positioning mechanism includes a needle tube, a fixed sleeve is slidably sleeved on the outside of the needle tube, a guide groove is formed on the inner wall of the fixed sleeve along its axial direction, a guide block is fixedly connected to the outer wall of the needle tube, the guide block is slidably connected to the inside of the fixed sleeve, and the guide block is fixed to the outer surface of the end of the needle tube away from the bottle inserter by a connecting block.

[0012] The two assembly cavities are of different sizes and are used to install two different sizes of mounting pieces.

[0013] The guide tube is fixedly connected to the inside of the engaging block, and the connecting block is rotatably connected to the inner wall of the assembly.

[0014] The syringe is fitted with a protective sleeve on its outer side, and the outer side of the protective sleeve is in contact with the front side of the bottle inserter.

[0015] The present invention has the following beneficial effects: 1. In this invention, the rotating block drives the connecting block to work, and the locking block, locking groove and guide tube cooperate to drive the assembly parts to rotate, align and lock together, realizing the functions of quick assembly and fixing of each part of the bottle inserter and convenient connection of infusion pipeline, thus realizing the quick assembly and protection of the bottle inserter.

[0016] 2. The guide tube and connecting parts are connected to drive the telescopic sleeve and the rubber ring to work. The connecting parts are inserted into the telescopic sleeve and locked into the groove, realizing the quick assembly function of direct insertion and locking of the infusion line. During the locking process of the guide tube, the sealing gasket is pressed and adhered, realizing the sealing and isolation at the connection between the guide tube and the bottle inserter.

[0017] 3. The present invention utilizes a fixed sleeve fitted around the outside of the needle tube and a guide block to form a linear guide device. When the bottle is inserted, the bottom end face of the fixed sleeve abuts against the bottle mouth to provide a stable physical support reference. When the needle tube moves downward under force, it is constrained by the longitudinal trajectory of the guide groove, which effectively limits the radial swing and circumferential rotation of the needle tube during the force-induced puncture process, maintains the perpendicularity of the needle tip insertion trajectory, and reduces insertion errors caused by puncture deviation. Attached Figure Description

[0018] Figure 1This is a three-dimensional schematic diagram of a medical vial with positioning and limiting function proposed in this invention. Figure 2 This is a schematic diagram of the structure of a medical vial inserter with positioning and limiting function proposed in this invention. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the guide tube for a medical infusion needle with positioning and limiting function proposed in this invention. Figure 5 This is a schematic diagram of the structure of a connector for a medical vial insertion needle with positioning and limiting, as proposed in this invention. Figure 6 This is a schematic diagram of the structure of a medical vial insertion needle with positioning and limiting function proposed in this invention.

[0019] Legend: 1. Bottle inserter; 2. Cap mounting; 3. Assembly mechanism; 31. Rotating block; 32. Assembly parts; 34. Engaging block; 35. Assembly cavity; 36. Connecting block; 37. Engaging groove; 38. Sealing gasket; 33. Sealing assembly; 331. Guide tube; 332. Connector; 333. Telescopic sleeve; 334. Rubber ring; 4. Positioning mechanism; 41. Needle tube; 42. Fixing sleeve; 43. Guide block; 44. Connecting block; 5. Protective cover. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0021] Reference Figures 1 to 4This invention provides a medical vial insertion needle with positioning and limiting, including a vial inserter 1, which serves as a support component and carrier for the entire vial insertion needle; and a mounting cover 2 slidably connected to the top of the vial inserter 1, which can slide flexibly along the top layer inside the vial inserter 1 to protect the internal components; a positioning mechanism 4 is fixedly connected to the front side of the vial inserter 1, and an assembly mechanism 3 is detachably connected to the rear side of the vial inserter 1; the assembly mechanism 3 includes a rotating block 31, which is detachably connected to the rear side of the vial inserter 1 and can rotate flexibly around its own axis; an assembly part 32 is rotatably connected to the outer side of the rotating block 31, which is used to realize the physical connection between the vial insertion needle and external components and the communication of the liquid channel; the assembly part 32 has a locking groove 37 inside, which is used to engage with the external components. The component interface protrusion with the groove structure is used to achieve assembly and fixation by engaging when the assembly 32 is connected to the external component; the rear side of the bottle inserter 1 is fixedly connected to the engaging block 34, which adopts a protruding structure and is adapted to the internal slot of the rotating block 31; the rear side of the bottle inserter 1 is fixedly connected to the sealing component 33, and the bottle inserter 1 has two assembly cavities 35, which are symmetrically distributed inside the rear side of the bottle inserter 1. The assembly cavities 35 provide installation space for the components of the assembly mechanism 3. The outer side of the rotating block 31 is fixedly connected to the connecting block 36, which is used to enhance the connection stability between the rotating block 31 and the bottle inserter 1 and limit the rotation angle of the rotating block 31. The outer wall of the bottle inserter 1 is fixedly connected to the sealing gasket 38, which is completely attached to the outer wall of the bottle inserter 1.

[0022] The sealing assembly 33 includes a guide tube 331, which is a hollow through-structure and serves as a channel for internal fluid flow. A connector 332 is fixedly connected to the outside of the guide tube 331. The outer wall of the connector 332 is slidably engaged with the internal through hole of the bottle inserter 1 and can slide laterally along the internal through hole of the bottle inserter 1. The outer side of the connector 332 is slidably connected to the inside of the bottle inserter 1. A telescopic sleeve 333 is slidably connected to the outer side of the connector 332. The telescopic sleeve 333 adopts a semi-open structure with an opening on the side wall, which has elastic deformation capability and can adapt to the assembly space. Two rubber rings 334 are fitted on the outer side of the telescopic sleeve 333. The rubber rings 334 are tightly attached to the outer wall of the telescopic sleeve 333 and expand and contract synchronously with the telescopic sleeve 333.

[0023] Specifically, the bottle inserter 1 has a sliding protective mounting cover 2 on its top, a positioning mechanism 4 on its front side, and a detachable assembly mechanism 3 on its rear side. The assembly mechanism 3 includes a rotatable rotating block 31 and an assembly part 32 with a locking groove 37, which, together with a locking block 34 and a connecting block 36, achieve limit fixation. It also has symmetrical assembly cavities 35 and sealing gaskets 38. The sealing assembly 33 consists of a hollow guide tube 331, a sliding connector 332, a semi-open telescopic sleeve 333, and a rubber ring 334, ensuring the flow of medicine and the sealing effect.

[0024] The connecting block 36 is cam-shaped, and its irregular shape allows for better contact limiting and angle adjustment. The eccentric side of the connecting block 36 abuts against the interior of the fitting 32. This abutment relationship limits the rotation angle of the fitting 32, preventing it from detaching or being damaged due to excessive rotation. The engaging groove 37 is slidably connected to the outer wall of the engaging block 34, enabling a detachable connection between the fitting 32 and the bottle inserter 1, allowing the fitting 32 to slide slightly along the outer wall of the engaging block 34. The engaging groove 37 is also slidably connected to the outer wall of the guide tube 331, allowing it to slide smoothly along the outer wall of the guide tube 331. The guide tube 331 provides guidance and support, preventing the engaging groove 37 from shifting during sliding. The two assembly cavities 35 are installed horizontally and parallel inside the bottle inserter 1, and the two assembly cavities 35 are used to install fixing plates.

[0025] The positioning mechanism 4 includes a needle tube 41, which serves as the basic component of the positioning mechanism 4 and adopts a medical-grade hollow tubular structure. A fixing sleeve 42 is slidably fitted onto the outside of the needle tube 41. The fixing sleeve 42 performs positioning and limiting functions, and its end near the infusion bottle adopts a funnel-shaped guide structure. A guide groove is formed along the axial direction of the inner wall of the fixing sleeve 42, which runs through the inside of the fixing sleeve 42 and has the same length as the fixing sleeve 42. A guide block 43 is fixedly connected to the outer wall of the needle tube 41. The guide block 43 is slidably connected inside the fixing sleeve 42 and slides along the guide groove with the needle tube 41 to ensure that the sliding direction of the needle tube 41 is consistent and to avoid deviation. The guide block 43 is slidably connected inside the fixing sleeve 42 and is fixed to the outer surface of the end of the needle tube 41 away from the bottle inserter 1 by a connecting block 44. The connecting block 44 is used to enhance the connection stability between the guide block 43 and the needle tube 41.

[0026] Specifically, the connecting block 36 mentioned above is designed as a cam structure, which uses its eccentric side to abut against the inside of the assembly 32 to limit the rotation angle of the assembly 32 and prevent the external part from falling off due to excessive rotation angle. The engaging groove 37 of the assembly 32 simultaneously engages the engaging block 34 and the outer wall of the guide tube 331, so as to realize the detachable assembly of the assembly 32 and the bottle inserter 1. At the same time, the guide tube 331 is used to realize the sliding guide limit to prevent displacement. The bottle inserter 1 is provided with two sets of horizontal parallel assembly cavities 35 for installing fixing pieces.

[0027] The two assembly cavities 35 are of different sizes and are adapted to the specifications of the mounting pieces installed inside them. The two assembly cavities 35 are used to install two mounting pieces of different specifications; one assembly cavity 35 is larger and is used to accommodate larger mounting pieces, while the other assembly cavity 35 is smaller and is used to accommodate smaller mounting pieces. The guide tube 331 is externally fixedly connected to the inside of the locking block 34. The outer wall of the guide tube 331 is adapted to the mounting hole opened inside the locking block 34, and a fixed connection is achieved through a snap-fit ​​structure. After fixing, the guide tube 331 and the locking block... 34 remains relatively still and will not loosen or shake; the external rotatable connection of the connecting block 36 is connected to the inner wall of the assembly 32; when the rotating block 31 rotates, the connecting block 36 will rotate synchronously and thus engage with the outside of the assembly 32; the outside of the needle tube 41 is covered with a protective sleeve 5, which is made of medical-grade soft polymer material, has good flexibility, and can be tightly fitted on the outside of the needle tube 41. The outside of the protective sleeve 5 is in contact with the front side of the bottle inserter 1, fixing the protective sleeve 5 to the outside of the needle tube 41 and preventing the protective sleeve 5 from shifting or falling off during the sliding of the needle tube 41.

[0028] Specifically, the assembly cavities 35 inside the bottle inserter 1 are of different sizes, which can be adapted to install mounting plates of different specifications. The outer wall of the guide tube 331 is fixed with the mounting hole of the locking block 34. The connecting block 36 rotates synchronously with the rotating block 31 and can lock the limiting accessory 32. The needle tube 41 is covered with a medical soft polymer protective sleeve 5, which is positioned against the front of the bottle inserter 1. Relying on its own flexibility, it tightly covers the needle tube 41, effectively preventing the protective sleeve 5 from shifting or falling off during use.

[0029] The implementation principle of this application embodiment is as follows: This medical bottle insertion needle with positioning limit is composed of a bottle inserter 1, a top mounting cap 2, and a protective sleeve 5 on the front side of the bottle inserter 1. An assembly mechanism 3 is provided on the rear side of the bottle inserter 1 for assembling the entire bottle inserter 1. A positioning mechanism 4 is provided on the front side of the bottle inserter 1 to ensure that the needle tube 41 can be vertically inserted into the bottle to ensure the accuracy of the insertion.

[0030] First, the staff opens the cover plate on top of the bottle inserter 1 and manually places the two fixing pieces inside the assembly cavity 35. Then, the staff presses the cover plate to reinstall it inside the bottle inserter 1. Next, the protective sleeve 5 is put on the outside of the needle tube 41 for protection. A locking block 34 is fixed on the rear side of the bottle inserter 1. A connecting tube is fixed on the locking block 34 for connecting the infusion line. During assembly, the locking groove 37 on the fitting 32 is rotated at a certain angle to pass through the outside of the sealing component 33 and then aligned with the locking block 34. The fitting 32 is then installed on the outside of the locking block 34 for fixation. Then, the rotating block 31 is rotated to drive the connecting block 36 on its outside to rotate inside the fitting 32. When the rotating block 31 on the outside of the fitting 32 rotates to the outside of the sealing component 33, it plays a protective role for the guide tube 331.

[0031] The sealing assembly 33 includes a guide tube 331, with a connector 332 fixedly connected to the outside of the guide tube 331. The connector 332 is slidably connected inside the telescopic sleeve 333, and a rubber ring 334 is provided on the outside of the telescopic sleeve 333. When an infusion line needs to be connected to the outside of the guide tube 331, the guide tube 331 and the connector 332 are an integral structure. When the connector 332 is inserted into the telescopic sleeve 333 along its inlet, the outer contour of the connector 332 will compress the telescopic sleeve 333 and the rubber ring 334 on its outside, causing them to expand and contract to both sides. The inside of the telescopic sleeve 333 is provided with a connection to the outer side of the connector 332. The side-fitting groove allows the connector 332 to be inserted into the groove inside the telescopic sleeve 333. At this time, the rubber ring 334 rebounds, causing the semi-open telescopic sleeve 333 to fully fit the outside of the connector 332, tightly fixing the guide tube 331 to the outside of the bottle inserter 1. This achieves direct insertion and locking of the pipeline without the need for screwing. A sealing gasket 38 is provided at the connection between the outside of the bottle inserter 1 and the guide tube 331. When the guide tube 331 is tightly fixed to the outside of the bottle inserter 1, the sealing ring can be squeezed to make the guide tube 331 and the bottle inserter 1 tightly connected, achieving direct insertion and locking of the pipeline. This provides stronger sealing and prevents leakage and air intake.

[0032] Secondly, when the needle 41 is inserted into the bottle, it causes a positional shift, making it difficult to ensure that the needle 41 remains vertical each time it is inserted into the bottle. Therefore, a positioning mechanism 4 is set on the outside of the needle 41 to solve the above problem. When the needle 41 is inserted into the bottle, the fixing sleeve 42 on the outside of the needle 41 will slide along the bottle opening on the outside of the needle 41. When the needle 41 is inserted to the maximum depth in the bottle, the fixing sleeve 42 is in a prohibited state. A guide block 43 is slidably connected inside the fixing sleeve 42. A connecting block 44 is connected to the end of the guide block 43 to fix the guide block 43 to the needle 41. Under the action of the guide block 43 and the fixing sleeve 42, the position of the needle 41 does not shift when it is inserted. The positioning mechanism 4 effectively solves the problem of the needle 41 shifting position when inserted into the bottle.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A medical vial insertion needle with positioning limit, comprising a vial inserter (1) and a mounting cap (2) slidably connected to the top of the vial inserter (1), wherein a positioning mechanism (4) is fixedly connected to the front side of the vial inserter (1) and an assembly mechanism (3) is detachably connected to the rear side of the vial inserter (1). Its features are, The assembly mechanism (3) includes a rotating block (31), an assembly part (32) is rotatably connected to the outside of the rotating block (31), a locking groove (37) is provided inside the assembly part (32), a locking block (34) is fixedly connected to the rear side of the bottle inserter (1), a sealing component (33) is slidably connected to the rear side of the bottle inserter (1), two assembly cavities (35) are provided inside the bottle inserter (1), a connecting block (36) is fixedly connected to the outside of the rotating block (31), and a sealing gasket (38) is fixedly connected to the outer wall of the bottle inserter (1).

2. The medical vial insertion needle with positioning and limiting function according to claim 1, characterized in that, The sealing assembly (33) includes a guide tube (331), a connector (332) is fixedly connected to the outside of the guide tube (331), the outside of the connector (332) is slidably connected to the inside of the bottle inserter (1), and a telescopic sleeve (333) is slidably connected to the outside of the connector (332). The telescopic sleeve (333) is a semi-open structure, and two rubber rings (334) are fitted on the outside of the telescopic sleeve (333).

3. The medical vial insertion needle with positioning and limiting function according to claim 1, characterized in that, The connecting block (36) is cam-shaped, and the connecting block (36) abuts against the interior of the assembly (32) on its eccentric side.

4. A medical vial insertion needle with positioning and limiting according to claim 2, characterized in that, The engaging groove (37) is slidably connected to the outer wall of the engaging block (34), and the engaging groove (37) is slidably connected to the outer wall of the guide tube (331).

5. A medical vial insertion needle with positioning and limiting according to claim 2, characterized in that, The two assembly cavities (35) are installed in a horizontal parallel state inside the bottle inserter (1), and the two assembly cavities (35) are used to install the fixing piece.

6. A medical vial insertion needle with positioning and limiting according to claim 1, characterized in that, The positioning mechanism (4) includes a needle tube (41), a fixed sleeve (42) is slidably sleeved on the outside of the needle tube (41), a guide groove is opened on the inner wall of the fixed sleeve (42) along its axial direction, a guide block (43) is fixedly connected to the outer wall of the needle tube (41), the guide block (43) is slidably connected to the inside of the fixed sleeve (42), and the guide block (43) is fixed to the outer surface of the end of the needle tube (41) away from the bottle inserter (1) by a connecting block (44).

7. A medical vial insertion needle with positioning and limiting according to claim 1, characterized in that, The two assembly cavities (35) are of different sizes and are used to install two different sizes of mounting pieces.

8. A medical vial insertion needle with positioning and limiting according to claim 5, characterized in that, The guide tube (331) is fixedly connected to the inside of the locking block (34), and the connecting block (36) is rotatably connected to the inner wall of the assembly (32).

9. A medical vial insertion needle with positioning and limiting according to claim 6, characterized in that, The needle (41) is covered with a protective sleeve (5), and the outer side of the protective sleeve (5) is in contact with the front side of the bottle inserter (1).

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