Integrated medicine pumping device

Abstract

The invention relates to the technical field of medical apparatuses and instruments, and discloses an integrated medicine pumping device which comprises an injector, an injection nozzle is arranged on the injector, an extension tube is arranged on the injector, a threaded tube is fixedly installed at the position, corresponding to the injection nozzle, of the injector, and the threaded tube is connected with the extension tube. A threaded sleeve matched with the threaded pipe is arranged at the end, close to the injector, of the extension pipe, an installation mechanism is arranged between the threaded pipe and the extension pipe, an elastic wire is wound around the outer side wall of the extension pipe, and an operation assembly is arranged on the elastic wire. According to the integrated medicine pumping device, the threaded pipe and the threaded sleeve are arranged, the extension pipe is firmly connected with the injector, the situation that the extension pipe is pulled to be connected with the injector and disengaged during infusion is effectively avoided, accidental liquid leakage is prevented, and the safety and stability of the infusion process are improved; the extension tube is prevented from being bent when a patient moves, smooth infusion is guaranteed, and infusion blockage caused by bending is avoided.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to an integrated pump-drug device. Background Technology

[0002] Clinically used microinfusion pumps are medical devices that achieve high-precision drug delivery through electronic control or mechanical drive. With the advancement of technology, modern microinfusion pumps mostly adopt stepper motors, peristaltic pumps or piezoelectric drive technology, combined with special syringes, to achieve precise dose control from nanoliters to milliliters.

[0003] A search revealed that Chinese utility model patent CN216456363U discloses a syringe for a micro-infusion pump, comprising a syringe body, a pump tube connected to the front end of the syringe body, and a connecting seat at the other end of the pump tube. The connecting seat is a stepped connecting seat, and a connector is fixedly mounted on the connecting seat. The connector has an internal thread on its inner side. The syringe body has a first engaging groove and a second engaging groove. The engaging grooves on the syringe facilitate the engagement and fixation of the micro-infusion pump during installation, ensuring the stability of the syringe.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: When using a micro-infusion pump, the end of the extension tube connected to the patient usually uses a Luer connector, and the end connected to the syringe is usually connected to the injection nozzle by an interference fit. Because the patient may move or make inappropriate movements, the connection between the extension tube and the syringe may be bent, loosened, or even separated during use, leading to problems such as infusion blockage, leakage, and contamination. This makes it inconvenient to use safely, affects the treatment process, and the infusion blockage caused by the bending of the extension tube is difficult to be quickly identified and detected, creating hidden dangers. After drawing the medication, because the syringe is placed horizontally on the micro-infusion pump, some air bubbles will remain at the tip of the syringe during venting, making the venting operation difficult and difficult to completely expel the air. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the extension tube in the prior art is prone to loosening and bending and blockage. To address this, we propose an integrated pump-pump device.

[0006] To achieve the above objectives, this application adopts the following technical solution: an integrated pump-drug device, including a syringe, a push rod slidably installed inside the syringe, a plunger fixedly installed at one end of the push rod inside the syringe, an injection nozzle provided on the syringe, an extension tube provided on the syringe, a threaded cap fixedly installed at the end of the extension tube away from the syringe, a threaded tube fixedly installed on the syringe at a position corresponding to the injection nozzle, an internal thread provided inside the threaded tube, a threaded sleeve adapted to the threaded tube provided at the end of the extension tube near the syringe, an external thread adapted to the threaded tube provided on the threaded sleeve, an installation mechanism provided between the threaded tube and the extension tube, an elastic wire wound on the outer wall of the extension tube, and an operating component provided on the elastic wire.

[0007] Preferably, the mounting mechanism includes a connector fixedly mounted on one end of the extension tube near the syringe, and the connector is adapted to the injection nozzle. A connecting tube is fixedly mounted on the end of the threaded sleeve away from the connector, and a limiting platform adapted to the connecting tube is fixedly mounted on the end of the connector away from the injection nozzle. The connecting tube is slidably connected to the extension tube.

[0008] Preferably, the sidewall of the connecting tube is uniformly provided with anti-slip textures distributed in a ring array, the length of the threaded tube is less than the length of the injection nozzle, and the length of the threaded sleeve is greater than the length of the connector.

[0009] Preferably, one end of the elastic wire is fixedly connected to the threaded cap, and the other end is fixedly connected to the connecting tube.

[0010] Preferably, the operating component includes a ring-shaped T-slot formed at one end of the connecting tube and the threaded cap, a sliding block is slidably installed in the T-slot, a connecting rod is fixedly installed on the sliding block, and a connecting mechanism is provided between one end of the connecting rod extending out of the T-slot and the elastic wire.

[0011] Preferably, the connecting mechanism includes a fixing ring fixedly installed on the connecting rod, and a limiting plate adapted to the fixing ring is fixedly installed at one end of the elastic wire passing through the fixing ring.

[0012] Preferably, the sliding block is spherical and the connecting rod is cylindrical.

[0013] Preferably, the top of the inner wall of the injection nozzle is collinear with the top of the inner wall of the syringe.

[0014] Preferably, the syringe has an arc-shaped platform at one end near the injection nozzle, the plunger end has a rounded corner adapted to the arc-shaped platform, and the arc-shaped platform has an injection hole communicating with the injection nozzle.

[0015] Preferably, the radius of the injection hole is smaller than the inner diameter of the injection nozzle, and the injection hole is located at the top of the arc-shaped platform corresponding to the injection nozzle. A trapezoidal horn tube with a gradually increasing radius is fixedly installed between the injection hole and the injection nozzle. The top of the horn tube is collinear with the inner wall of the injection nozzle, and the injection hole and the injection nozzle are respectively adapted to both ends of the horn tube.

[0016] The technical effects and advantages of this invention are as follows: In this invention, by setting threaded tubes and threaded sleeves, the extension tube is firmly connected to the syringe, which effectively prevents the connection between the extension tube and the syringe from loosening due to patient movement or other reasons during infusion, prevents accidental leakage, and improves the safety and stability of the infusion process. An elastic wire is wound on the extension tube, and the force of the elastic wire on the extension tube is used to prevent the extension tube from bending when the patient moves, ensuring smooth infusion and avoiding infusion blockage caused by bending. In this invention, by setting a connecting tube and an elastic wire, during installation, the nozzle is first connected to the injection nozzle, and then the connecting tube is moved to drive the threaded sleeve to be threadedly connected and fixed to the threaded tube. This facilitates observation and alignment when the extension tube is initially connected to the syringe. When not in use, the connecting tube drives the threaded sleeve to slide towards the threaded cap end, and the elastic wire springs back and rewinds, making it easy to store the extension tube. When in use, the connecting tube drives the elastic wire to be evenly wound around the entire length of the extension tube, achieving a comprehensive anti-bending effect. In this invention, by setting a T-slot and a sliding block, the elastic wire passes through the fixed ring. When stretched, it is fixed under the action of the limiting plate and moves with the connecting pipe. When the connecting pipe is moved to stretch the elastic wire, the elastic wire can rotate relative to the connecting pipe. When stretching the threaded sleeve, there is no need to rotate the connecting pipe, thus achieving a simple installation operation. In this invention, by setting the top of the inner wall of the injection nozzle to be collinear with the top of the inner wall of the syringe, it is easy for air bubbles at the top of the syringe to be discharged smoothly from the top. The arc-shaped platform design allows air bubbles accumulated at the top of the syringe to slide along it to the injection hole, preventing them from being stuck by the inner wall. The setting of the injection hole and the horn tube controls the discharge of the liquid medicine, avoiding squeezing tiny air bubbles around the discharge port when a large amount of liquid medicine is discharged with pressure, making the venting simpler and more thorough. Attached Figure Description

[0017] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the extension tube of the present invention; Figure 3This is a partial cross-sectional view of the present invention; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of a partial explosion structure of the present invention; Figure 6 This is a cross-sectional view of the syringe of the present invention; Figure 7 for Figure 6 Enlarged structural diagram at point B; Figure 8 This is a partial structural diagram of the working state of the elastic wire of the present invention.

[0018] Legend: 1. Syringe; 2. Push rod; 21. Plunger; 3. Injection nozzle; 31. Extension tube; 32. Connector; 33. Threaded cap; 4. Threaded tube; 41. Threaded sleeve; 5. Elastic wire; 51. Connecting tube; 52. Limiting platform; 53. Anti-slip texture; 6. T-slot; 61. Sliding block; 62. Connecting rod; 63. Retaining ring; 64. Limiting plate; 7. Arc-shaped platform; 71. Injection hole; 72. Trumpet tube. Detailed Implementation

[0019] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0020] Reference Figures 1 to 8As shown, the present invention provides a technical solution: an integrated pump-drug device, including a syringe 1, a push rod 2 slidably installed inside the syringe 1, a plunger 21 fixedly installed at one end of the push rod 2 inside the syringe 1, an injection nozzle 3 provided on the syringe 1, an extension tube 31 provided on the syringe 1, a threaded cap 33 fixedly installed at the end of the extension tube 31 away from the syringe 1, a threaded tube 4 fixedly installed on the syringe 1 at a position corresponding to the injection nozzle 3, the threaded tube 4 having an internal thread, and a threaded sleeve 41 adapted to the threaded tube 4 provided at the end of the extension tube 31 near the syringe 1, the threaded sleeve 41 having an external thread adapted to the threaded tube 4. An installation mechanism is provided between the threaded tube 4 and the extension tube 31. An elastic wire 5 is wound around the outer wall of the extension tube 31, and an operating component is provided on the elastic wire 5. In use, first attach the needle to the injection nozzle 3 of the syringe 1, pull the push rod 2 to add medication, and after completion, remove the needle. Secure the extension tube 31 to the threaded tube 4 with the threaded sleeve 41 at the end near the syringe 1. After venting, screw the other end of the extension tube 31 to the infusion three-way tube at the patient end. Infusion is performed by pushing the push rod 2 through the micro-pump. This prevents the connection between the extension tube 31 and the syringe 1 from loosening, prevents leakage, and improves safety. The elastic wire 5 is wound around the extension tube 31 to prevent bending and ensure smooth infusion.

[0021] Reference Figures 1 to 3 and Figure 5 As shown, the installation mechanism includes a connector 32 fixedly installed at the end of the extension tube 31 near the syringe 1, and the connector 32 is adapted to the injection nozzle 3. A connecting tube 51 is fixedly installed at the end of the threaded sleeve 41 away from the connector 32. A limiting platform 52 adapted to the connecting tube 51 is fixedly installed at the end of the connector 32 away from the injection nozzle 3. The connecting tube 51 is slidably connected to the extension tube 31. Anti-slip textures 53 are evenly distributed in a ring array on the side wall of the connecting tube 51. The length of the threaded tube 4 is less than the length of the injection nozzle 3, and the length of the threaded sleeve 41 is greater than the length of the connector 32. One end of the elastic wire 5 is fixedly connected to the threaded cap 33, and the other end is fixedly connected to the connecting tube 51. The threaded sleeve 41 can slide along the extension tube 31 with the connecting tube 51. During installation, the connector 32 is first connected to the injection nozzle 3. The connecting tube 51 is moved to connect the threaded sleeve 41 to the threaded tube 4. The limiting platform 52 is pressed to fix it, which facilitates the initial connection, observation, alignment, and locking after pre-installation. The length of the threaded tube 4 is less than that of the injection nozzle 3, which facilitates the installation of accessories.

[0022] Reference Figure 4As shown, the operating components include a ring-shaped T-slot 6 formed at one end of the connecting tube 51 and the threaded cap 33. A sliding block 61 is slidably installed in the T-slot 6, and a connecting rod 62 is fixedly installed on the sliding block 61. A connecting mechanism is provided between the end of the connecting rod 62 extending out of the T-slot 6 and the elastic wire 5. The connecting mechanism includes a fixing ring 63 fixedly installed on the connecting rod 62. A limiting plate 64 adapted to the fixing ring 63 is fixedly installed at the end of the elastic wire 5 that passes through the fixing ring 63. The sliding block 61 is spherical, and the connecting rod 62 is cylindrical. When the elastic wire 5 passes through the fixing ring 63, the moving connecting tube 51 stretches the elastic wire 5, and the sliding block 61 slides along the T-slot 6, causing the elastic wire 5 to rotate relative to the connecting tube 51. When installing the threaded sleeve 41, there is no need to rotate the connecting tube 51, thus achieving simple installation.

[0023] Reference Figure 6 and Figure 7 As shown, the top of the inner wall of the injection nozzle 3 is collinear with the top of the inner wall of the syringe 1; an arc-shaped platform 7 is provided at one end of the syringe 1 near the injection nozzle 3, and the end of the plunger 21 is provided with a rounded corner that matches the arc-shaped platform 7. An injection hole 71 communicating with the injection nozzle 3 is provided on the arc-shaped platform 7; the radius of the injection hole 71 is smaller than the inner diameter of the injection nozzle 3, and the injection hole 71 is located at the top of the arc-shaped platform 7 corresponding to the injection nozzle 3. A trapezoidal horn tube 72 with a gradually increasing radius is fixedly installed between the injection hole 71 and the injection nozzle 3. The top of the horn tube 72 is collinear with the inner wall of the injection nozzle 3, and the injection hole 71 and the injection nozzle 3 are respectively adapted to the two ends of the horn tube 72; the top of the inner wall of the injection nozzle 3 is collinear with the top of the inner wall of the syringe 1, which facilitates the discharge of air bubbles at the top. The arc-shaped platform 7 allows the accumulated air bubbles to slide to the injection hole 71, and the air bubbles are more likely to move to this point along the arc-shaped platform 7 when the air is discharged. The horn tube 72 controls the small diameter of the inlet end when the liquid is discharged, avoiding the large amount of liquid from squeezing the tiny air bubbles to the periphery of the outlet.

[0024] Working principle: In use, first install the needle onto the injection nozzle 3 of syringe 1, and add medication by pulling the push rod 2. After medication is added, remove the needle, and fix the end of the extension tube 31 near syringe 1 by threading the threaded sleeve 41 to the threaded tube 4. Perform an air venting operation to vent the gas in syringe 1 and extension tube 31. Then, screw the other end of the extension tube 31 to the infusion tube at the patient end. Continue to push the push rod 2 at the tail of syringe 1 through the micro-pump to achieve infusion. The use of threaded tube 4 and threaded sleeve 41 avoids the problem of the extension tube 31 becoming loose from syringe 1 due to the patient or other reasons pulling on the extension tube 31 during infusion, and avoids leakage due to accidents during use, thus improving the safety and stability of use. By winding an elastic wire 5 on the extension tube 31, the elastic wire 5 exerts a certain force on the extension tube 31 during use, which can protect the extension tube 31 from U-shaped or Z-shaped bending when the patient moves, thereby protecting the smooth infusion and preventing infusion blockage due to bending of the extension tube 31. The threaded sleeve 41 can slide along the extension tube 31 with the connecting tube 51. During installation, the connector 32 is first connected to the injection nozzle 3. Then, by moving the connecting tube 51, the threaded sleeve 41 is moved to the threaded tube 4. By rotating the connecting tube 51, the threaded sleeve 41 is threadedly connected and fixed to the threaded tube 4. Then, the connecting tube 51 presses against the limiting platform 52 on the connector 32, so that the extension tube 31 and the injection nozzle 3 are firmly fixed and connected. The anti-slip texture 53 on the connecting tube 51 and the process of the connecting tube 51 moving the threaded sleeve 41 make it easy to observe and align the extension tube 31 and the syringe 1 during the initial connection. After pre-installation, the connecting tube 51 is used to further fix and lock the connection. The length of the threaded tube 4 is less than the length of the injection nozzle 3, which allows for the installation of the needle and the installation of the injection nozzle during drug administration. The extension tube 31 is easier to align and install, and the protruding threaded tube 4 will not affect the connection between the accessory and the syringe 1. The two ends of the elastic wire 5 are connected to the connecting tube 51 and the threaded cap 33 respectively. When the extension tube 31 is not in use, the connecting tube 51 can slide the threaded sleeve 41 towards the threaded cap 33, so that the elastic wire 5 can spring back and rewind, reducing the overall length of the elastic wire 5 and compressing it at one end of the extension tube 31. At this time, the extension tube 31 can be easily stored. While achieving anti-bending, the extension tube 31 can be stored in a small space when not in use. When in use, the connecting tube 51 moves one end of the elastic wire 5 to the end of the syringe 1, so that the elastic wire 5 is evenly wound around the entire length of the extension tube 31, achieving a comprehensive anti-bending effect. The elastic wire 5 passes through the fixing ring 63 and can be fixed under the action of the limiting plate 64 during stretching, so that the elastic wire 5 moves with the connecting tube 51. When the connecting tube 51 is moved to stretch the elastic wire 5, the elastic wire 5 will rotate as it stretches. The sliding block 61 slides along the T-slot 6 and drives the connecting rod 62 and the fixing ring 63 to rotate, so that the elastic wire 5 can rotate relative to the connecting tube 51. This means that when the threaded sleeve 41 is installed after stretching the elastic wire 5, there is no need to rotate the connecting tube 51 to adapt to the deformation of the elastic wire 5. This allows for a simple and foolproof installation operation. In addition, the reverse force of the elastic wire 5 after stretching can be released and will not act on the threaded sleeve 41, ensuring a tight installation. The top of the inner wall of the injection nozzle 3 is collinear with the top of the inner wall of the syringe 1, allowing air bubbles located at the top of the syringe 1 to be smoothly discharged from the top of the syringe 1 without getting stuck inside. The arc-shaped platform 7 allows accumulated air bubbles at the top of the syringe 1 to slide along the arc-shaped platform 7 to the injection hole 71 without being stuck by the inner wall of the syringe 1, allowing the air bubbles to be discharged smoothly. The injection hole 71 is smaller than the injection nozzle 3 and is located at the edge of the inner wall of the syringe 1, allowing air bubbles to slide to the position of the injection hole 71 when the syringe 1 is vented. When the liquid is ejected, the air bubbles will not get stuck around the injection hole 71 due to being too small. By setting the horn tube 72, the inlet diameter is controlled to be smaller when the liquid is ejected, avoiding the problem of small air bubbles being squeezed around the outlet when a large amount of liquid is ejected from the syringe 1 under pressure, which would lead to incomplete venting. This makes venting simpler and more thorough.

[0025] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. An integrated pump and medicament device, characterized in that, The utility model provides an injection device, which comprises a syringe (1), a push rod (2) slidably installed in the syringe (1), a plunger (21) fixedly installed at one end of the push rod (2) in the syringe (1), an injection nozzle (3) arranged on the syringe (1), an extension tube (31) arranged on the syringe (1), a threaded cap (33) fixedly installed at one end of the extension tube (31) away from the syringe (1), a threaded tube (4) fixedly installed on the syringe (1) at a position corresponding to the injection nozzle (3), an inner thread arranged in the threaded tube (4), a threaded sleeve (41) arranged on one end of the extension tube (31) close to the syringe (1) and matched with the threaded tube (4), an outer thread arranged on the threaded sleeve (41) and matched with the threaded tube (4), an installation mechanism arranged between the threaded tube (4) and the extension tube (31), an elastic wire (5) arranged on the outer side wall of the extension tube (31), and an operation assembly arranged on the elastic wire (5).

2. The integrated pump-dispenser device according to claim 1, characterized in that: The installation mechanism comprises a nozzle (32) fixedly installed at one end of the extension tube (31) close to the syringe (1), the nozzle (32) is matched with the injection nozzle (3), a connecting tube (51) fixedly installed at one end of the threaded sleeve (41) away from the nozzle (32), a limiting table (52) fixedly installed at one end of the nozzle (32) away from the injection nozzle (3) and matched with the connecting tube (51), and the connecting tube (51) is slidably connected with the extension tube (31).

3. The integrated pump-dispenser device of claim 2, wherein: The connecting tube (51) is uniformly provided with anti-skid lines (53) arranged in an annular array on the side wall, the length of the threaded tube (4) is less than the length of the injection nozzle (3), and the length of the threaded sleeve (41) is greater than the length of the nozzle (32).

4. The integrated pump-dispenser device of claim 2, wherein: One end of the elastic wire (5) is fixedly connected with the threaded cap (33), and the other end is fixedly connected with the connecting tube (51).

5. The unit pump drug device of claim 2, wherein: The operation assembly comprises a T-shaped groove (6) arranged in a ring shape and formed at one end of the connecting tube (51) opposite to the threaded cap (33), a sliding block (61) slidably installed in the T-shaped groove (6), a connecting rod (62) fixedly installed on the sliding block (61), and a connecting mechanism arranged between one end of the connecting rod (62) extending out of the T-shaped groove (6) and the elastic wire (5).

6. The integrated pump-dispenser device of claim 5, wherein: The connecting mechanism comprises a fixed ring (63) fixedly installed on the connecting rod (62), and the elastic wire (5) is fixedly installed at one end penetrating through the fixed ring (63) and matched with the fixed ring (63).

7. The integrated pump-dispenser device of claim 6, wherein: The sliding block (61) is arranged in a spherical shape, and the connecting rod (62) is arranged in a cylindrical shape.

8. The unit pump drug device of claim 1, wherein: The inner side wall top of the injection nozzle (3) is arranged in line with the inner side wall top of the syringe (1).

9. The integrated pump-dispenser device of claim 8, wherein: An arc-shaped table (7) is arranged at one end of the syringe (1) close to the injection nozzle (3), and the end of the plunger (21) is provided with a rounded corner matching the arc-shaped table (7), and the arc-shaped table (7) is provided with an injection hole (71) communicating with the injection nozzle (3).

10. The integrated pump-dispenser device of claim 9, wherein: The radius of the injection hole (71) is smaller than the inner diameter of the injection nozzle (3), and the injection hole (71) is arranged at the top of the arc-shaped table (7) corresponding to the injection nozzle (3), and a ladder-shaped horn tube (72) with gradually increasing radius is fixedly arranged between the injection hole (71) and the injection nozzle (3), the top of the horn tube (72) is arranged in line with the inner side wall of the injection nozzle (3), and the injection hole (71) and the injection nozzle (3) are respectively matched with the two ends of the horn tube (72).

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