Suction type filling device
By designing a suction perfusion device with a needle structure side hole and a communication port, the problems of cumbersome and contaminated drug aspiration in bladder perfusion operation are solved, and the effect of simple and safe operation is achieved.
Patent Information
- Application Number
- CN202420677048.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-03
AI Technical Summary
The existing bladder perfusion devices have problems such as cumbersome aspiration of drugs, which can easily cause contamination and iatrogenic damage during operation.
A suction perfusion device including a cartridge and a cartridge is designed, connected through the side hole of the needle structure and the communication port, and the drug is sucked into the cartridge by generating negative pressure using the piston, and inserted through the perfusion port. Perfusion of the catheter avoids exposure of the sharp end of the needle and reduces contamination and damage.
It achieves the effect of simple operation, reducing drug contamination and iatrogenic damage, and improves operation safety and efficiency.
Smart Images
Figure CN222341796U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical equipment, in particular to a suction type perfusion device. Background Art
[0002] Bladder instillation refers to the process of drawing drugs into an instillation device and pouring them into the bladder through a urinary catheter. It is one of the treatment methods for patients with early-stage bladder tumors and is also effective for removing blood clots in patients after transurethral resection of the prostate. Bladder instillation requires the use of a bladder instillation device connected to a urinary catheter for operation. However, the instillation head of the bladder instillation device cannot be connected to a needle to directly draw drugs. The current treatment method is to first use a disposable 50ml syringe to draw the drug solution into the syringe barrel, and then use a disposable 50ml syringe needle to inject it into the bladder instillation device and then instill it through the urinary catheter. In actual operation, the above methods have some shortcomings. For example, the repeated drawing of drugs from different containers during operation is cumbersome and time-consuming. At the same time, improper operation can easily cause contamination and even iatrogenic damage.
[0003] How to solve the above problems has become a technical problem that needs to be solved urgently. Utility Model Content
[0004] The utility model aims to provide a suction-type perfusion device which is simple and convenient to operate, can effectively avoid secondary contamination of medicines and reduce iatrogenic damage.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a suction-type infusion device, comprising a syringe, wherein a drug loading cartridge and a drug extraction cartridge are arranged in the syringe, wherein the drug loading cartridge and the drug extraction cartridge are arranged along the length direction of the syringe, wherein a piston is connected to a sliding sealing sleeve in the drug loading cartridge, wherein one end of the drug loading cartridge away from the piston is connected to the drug extraction cartridge via a connecting port, wherein a needle structure is provided in the sliding sleeve in the drug extraction cartridge, wherein a side hole is provided on the side wall of the needle structure, and wherein an infusion port is provided on the syringe, wherein the infusion port is coaxially connected to the drug extraction cartridge, and when the side hole is connected to the connecting port, the sharp end of the needle structure extends out of the syringe through the infusion port.
[0007] Furthermore, the needle structure includes a needle body, which is slidably sleeved in the drug extraction cartridge and has a sharp end at one end of the needle body away from the piston, a drug channel extending along its length direction is provided in the needle body, the side hole is opened on the side wall of the needle body and is connected to the outside through the drug channel, and a needle pushing structure is connected to one end of the needle body away from the infusion port, which can push the needle body to connect the side hole with the connecting port.
[0008] Furthermore, the needle-pushing structure includes a guide rod, which is slidably sleeved in the drug extraction cartridge, one end of the guide rod is fixedly connected to the needle body and the other end of the guide rod is connected to a spring for pushing the needle body, and a locking bolt is provided on the side wall of the guide rod, and a strip-shaped opening is provided on the side wall of the syringe, and the drug extraction cartridge is connected to the outside through the strip-shaped opening, the screw end of the locking bolt extends into the drug extraction cartridge through the strip-shaped opening and is threadedly connected to the guide rod, and the bottom surface of the bolt head of the locking bolt is in contact with the outer wall of the syringe.
[0009] Furthermore, it also includes a sealing ring, which is fixedly sleeved in the drug extraction cylinder, and the needle body is slidably sleeved on the inner side of the sealing ring.
[0010] Furthermore, one end of the drug extraction cartridge away from the filling port is an open end and a sealing plug is detachably provided on the end, and the sealing plug is in abutment with the spring.
[0011] Due to the adoption of the above structure, the utility model has the following beneficial effects:
[0012] The utility model is provided with a drug loading cartridge and a drug extraction cartridge. When in use, the sharp end of the needle structure is extended out of the syringe through the injection port and inserted into the medicine bottle. The negative pressure generated by pulling the piston backward can sequentially draw the medicine into the drug loading cartridge through the needle structure, the side hole, and the connecting port. Then the needle structure is retracted into the drug extraction cartridge, which can prevent the sharp end of the needle structure from being exposed to the outside world to cause pollution and stab others. When it is necessary to inject liquid medicine, the injection port is inserted into the urinary catheter, and the piston is pushed forward. The medicine in the drug loading cartridge can be injected into the patient's bladder through the connecting port, the drug extraction cartridge, the injection port, and the urinary catheter in sequence. Therefore, the utility model is simple and convenient to operate, and can effectively reduce the needle and drug contamination, iatrogenic damage, etc. caused by improper operation.
[0013] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a cross-sectional view of the utility model. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] Please refer to Figure 1 and Figure 2 The suction infusion device provided by the utility model comprises a syringe 1, wherein a drug loading cartridge 2 and a drug extraction cartridge 3 are arranged in the syringe 1, wherein the drug loading cartridge 2 and the drug extraction cartridge 3 are arranged along the length direction of the syringe 1, wherein a piston 4 is connected to a sliding sealing sleeve in the drug loading cartridge 2, wherein one end of the drug loading cartridge 2 away from the piston 4 is connected to the drug extraction cartridge 3 through a connecting port 5, wherein a needle structure 6 is provided in the sliding sleeve in the drug extraction cartridge 3, wherein a side hole 7 is provided on the side wall of the needle structure 6, and wherein an infusion port 8 is provided on the syringe 1, wherein the infusion port 8 is coaxially connected to the drug extraction cartridge 3, and when the side hole 7 is connected to the connecting port 5, the sharp end of the needle structure 6 extends out of the syringe 1 through the infusion port 8. When in use, first extend the sharp end of the needle structure 6 out of the syringe 1 through the infusion port 8 and insert it into the medicine bottle containing the medicine, then pull the piston 4 backward to generate negative pressure, so that the medicine is sucked into the medicine-filling barrel 2 through the needle structure 6, the side hole 7, and the connecting port 5 in sequence, and then the needle structure 6 is retracted into the medicine-drawing barrel 3 to prevent the sharp end of the needle structure 3 from being exposed to the outside world to cause contamination and stab others; when it is necessary to infuse the medicine solution, insert the infusion port 8 into the urinary catheter, push the piston 4 forward, and the medicine in the medicine-filling barrel 2 is infused into the patient's bladder through the connecting port 5, the medicine-drawing barrel 3, the infusion port 8, and the urinary catheter in sequence.
[0019] In the utility model, the needle structure 6 includes a needle body 61, which is slidably sleeved in the drug extraction cartridge 3 and the end of the needle body 61 away from the piston 4 is a sharp end, a drug channel 62 extending along the length direction of the needle body 61 is provided in the needle body 61, the side hole 7 is opened on the side wall of the needle body 61 and the side hole 7 is connected to the outside through the drug channel 62, and the end of the needle body 61 away from the infusion port 8 is connected to a push needle structure 63 capable of pushing the needle body 61 to the side hole 7 to connect with the connecting port 5. When the piston 4 is pulled back, the drug can be sucked into the drug loading cartridge 2 through the drug channel 62, the side hole 7 and the connecting port 5 in sequence.
[0020] In the utility model, the needle pushing structure 63 includes a guide rod 631, and the guide rod 631 is slidably sleeved in the drug extraction cartridge 3. One end of the guide rod 631 is fixedly connected to the needle body 61 and the other end of the guide rod 631 is connected to a spring 632 for pushing the needle body 61. In addition, a locking bolt 633 is provided on the side wall of the guide rod 631, and a strip-shaped opening 634 is provided on the side wall of the syringe 1. The drug extraction cartridge 3 is connected to the outside through the strip-shaped opening 634. The screw end of the locking bolt 633 extends into the drug extraction cartridge 3 through the strip-shaped opening 634 and is threadedly connected to the guide rod 631. The bottom surface of the bolt head of the locking bolt 633 is in contact with the outer wall of the syringe 1. When the locking bolt 633 is loosened, the bottom surface of the bolt head of the locking bolt 633 does not conflict with the outer wall of the syringe 1, and the spring 632 stretches and pushes the needle body 61 out of the infusion port 8, so that the bottle cap of the medicine bottle can be pierced by the needle body 61, and the spring 632 pushes the locking bolt 633 to slide along the strip opening 634 until the side wall of the screw portion of the locking bolt 633 conflicts with the side wall of the strip opening 634 close to the infusion port 8. At this time, the side hole 7 and the connecting port 5 are at the same height, so that the drug loading cartridge 2 and the drug extraction cartridge 3 are connected, and the drug in the medicine bottle can be sucked by pulling back the piston 4; after the suction is completed, pulling back the locking bolt 633 can drive the needle body 61 to retract into the drug extraction cartridge 3 to prevent the sharp end of the needle body 61 from being exposed to the outside world. At this time, the spring 632 is compressed, and the locking bolt 633 is reversely screwed until the bottom surface of its bolt head conflicts with the outer wall of the syringe 1, so that the spring 632 can remain in a compressed state.
[0021] The present invention further includes a sealing ring 9, which is fixedly sleeved in the drug extraction cartridge 3, and the needle body 61 is slidably sleeved on the inner side of the sealing ring 9. In the present invention, the distance between the sealing ring 9 and the infusion port 8 is greater than or less than the distance between the connecting port 5 and the infusion port 8; when the distance between the sealing ring 9 and the infusion port 8 is greater than the distance between the connecting port 5 and the infusion port 8, it can effectively prevent the drug from leaking to the outside through the gap between the needle body 61 and the drug extraction cartridge 3, the gap between the guide rod 631 and the drug extraction cartridge 3, and the strip port 634 in sequence; when the distance between the sealing ring 9 and the infusion port 8 is less than the distance between the connecting port 5 and the infusion port 8, it can effectively enhance the sealing of the drug extraction cartridge 3, play a role in the negative pressure strength when the drug is sucked, and at the same time, it can also effectively prevent the drug solution from leaking to the outside through the gap between the needle body 61 and the drug extraction cartridge 3 and the infusion port 8 in sequence.
[0022] In the present invention, the end of the drug extraction cartridge 3 away from the filling port 8 is an open end and a sealing plug 10 is detachably provided on the end. The sealing plug 10 cooperates with the spring 632 to provide support for the spring 632 and facilitates the replacement and maintenance of various components located in the drug extraction cartridge 3.
[0023] When the utility model is in use, first loosen the locking bolt 633, the spring 632 stretches and pushes the needle body 61 out of the infusion port 8, and the spring 632 pushes the locking bolt 633 to slide along the strip-shaped opening 634 until the side wall of the screw portion of the locking bolt 633 conflicts with the side wall of the strip-shaped opening 634 near the infusion port 8. At this time, the side hole 7 and the connecting port 5 are at the same height, the drug loading cartridge 2 is connected with the drug extraction cartridge 3, and the piston 4 is pulled back. After the medicine in the medicine bottle is sucked into the drug loading cartridge 2 through the drug passage 62, the side hole 7, and the connecting port 5 in turn, the locking bolt 633 is pulled back to drive the needle body 61 to retract into the drug extraction cartridge 3 and tighten the locking bolt 633 to prevent the sharp end of the needle body 61 from being exposed to the outside world; when it is necessary to infuse the drug solution, the infusion port 8 is inserted into the urinary catheter, the piston 4 is pushed forward, and the medicine in the drug loading cartridge 2 is poured into the patient's bladder through the connecting port 5, the drug extraction cartridge 3, the infusion port 8, and the urinary catheter in turn. Therefore, the utility model is simple and convenient to operate, can effectively avoid secondary contamination of drugs, and reduce iatrogenic damage.
[0024] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.
Claims
1. A suction infusion device, comprising a syringe (1); characterized in that: The syringe (1) is provided with a drug loading cartridge (2) and a drug extraction cartridge (3), and the drug loading cartridge (2) and the drug extraction cartridge (3) are both arranged along the length direction of the syringe (1), wherein the drug loading cartridge (2) is provided with a piston (4) in a sliding sealing sleeve, and the end of the drug loading cartridge (2) away from the piston (4) is connected to the drug extraction cartridge (3) through a connecting port (5), and the sliding sleeve in the drug extraction cartridge (3) is provided with a needle structure (6), and a side hole (7) is provided on the side wall of the needle structure (6), and an infusion port (8) is provided on the syringe (1), and the infusion port (8) is coaxially connected to the drug extraction cartridge (3), and when the side hole (7) is connected to the connecting port (5), the sharp end of the needle structure (6) extends out of the syringe (1) through the infusion port (8).
2. The suction irrigation device according to claim 1, characterized in that: The needle structure (6) comprises a needle body (61), the needle body (61) is slidably sleeved in the drug extraction cartridge (3) and the end of the needle body (61) away from the piston (4) is a sharp end, a drug channel (62) extending along the length direction of the needle body (61) is provided in the needle body (61), the side hole (7) is opened on the side wall of the needle body (61) and the side hole (7) is connected to the outside through the drug channel (62), and the end of the needle body (61) away from the infusion port (8) is connected to a needle pushing structure (63) capable of pushing the needle body (61) to the side hole (7) to connect with the connecting port (5).
3. The suction irrigation device according to claim 2, characterized in that: The needle pushing structure (63) includes a guide rod (631), which is slidably sleeved in the drug extraction barrel (3), one end of the guide rod (631) is fixedly connected to the needle body (61) and the other end of the guide rod (631) is connected to a spring (632) for pushing the needle body (61), and a locking bolt (633) is provided on the side wall of the guide rod (631), and a strip-shaped opening (634) is opened on the side wall of the syringe (1), and the drug extraction barrel (3) is connected to the outside through the strip-shaped opening (634), and the screw end of the locking bolt (633) extends into the drug extraction barrel (3) through the strip-shaped opening (634) and is threadedly connected to the guide rod (631), and the bottom surface of the bolt head of the locking bolt (633) is in contact with the outer wall of the syringe (1).
4. The suction irrigation device according to claim 2 or 3, characterized in that: It also comprises a sealing ring (9), wherein the sealing ring (9) is fixedly sleeved in the drug extraction cylinder (3), and the needle body (61) is slidably sleeved on the inner side of the sealing ring (9).
5. The suction irrigation device according to any one of claims 1 to 3, characterized in that: The end of the drug extraction cartridge (3) away from the infusion port (8) is an open end and a sealing plug (10) is detachably provided on the end, and the sealing plug (10) is in abutment with the spring (632).