Special injector for bladder perfusion
By designing a tapered needle cover and a stable connection structure for a special syringe for bladder infusion, the problem of unstable connection between the traditional syringe and the catheter is solved, the safety and stability of drug infusion is achieved, and the risk to medical staff is reduced.
Patent Information
- Application Number
- CN202422415512.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-08
AI Technical Summary
During the existing bladder instillation process, the connection between the traditional syringe and the catheter is unstable, which can easily lead to drug spillage and safety risks for medical staff. In addition, the acupuncture method has the risk of needlestick injuries and catheter damage.
A special syringe for bladder infusion was designed. It uses a conical needle cover to connect to the urine outlet of the urinary catheter. It combines a limit groove, an adjustment seat, a swivel and a block structure to ensure the stability of the connection. The needle body and needle cover are protected by a protective cap to avoid damage to the urinary catheter and drug spillage.
It achieves adaptive connection with different urinary catheter calibers, avoids urinary catheter damage and drug spillage, reduces the safety risks of medical staff, and improves the stability and safety of operation.
Smart Images
Figure CN223404194U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a special syringe for bladder infusion. Background Art
[0002] In clinical practice, bladder tumors are the most common type of tumors in the urinary system. Their high incidence is particularly significant in my country, ranking first in the incidence of urinary system tumors. In response to the postoperative treatment needs of bladder tumors, intravesical chemotherapy has become a key and commonly used treatment method. This method uses a syringe and a urinary catheter system to directly inject chemotherapy drugs into the bladder, aiming to effectively remove residual tiny tumor cells or potential lesions and prevent disease recurrence. However, in the current intravesical instillation process, the use of traditional 50ml syringes for drug infusion faces several significant challenges and problems. First, when the syringe nipple is directly connected to the urinary catheter outlet, due to the mismatch of the calibers of the two, medical staff are often required to manually maintain the stability of the connection. Qualitatively, this not only increases the difficulty of operation, but also easily leads to disconnection due to careless operation, which in turn causes the spillage of chemotherapy drugs. Drug spillage not only reduces the treatment effect, but may also lead to perfusion failure. More importantly, it increases the risk of occupational exposure of medical staff to harmful drugs. Secondly, another common perfusion method is acupuncture, which is to connect the catheter to the urine bag and clamp it, and then insert the needle into the specific position of the catheter to inject the drug. Although it solves the problem of connection stability to a certain extent, it brings new risks. During the acupuncture process, medical staff are at risk of being accidentally injured by the needle. At the same time, due to the fragility of the catheter material, the catheter may be damaged due to acupuncture, which in turn causes perfusion failure and drug spillage, which also threatens the safety of medical staff. Utility Model Content
[0003] In view of the above problems, the purpose of the present invention is to provide a special syringe for bladder infusion to solve the problems raised in the above background technology.
[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a special syringe for bladder infusion, including a barrel and a clamping ring, a piston movably provided at the inner end of the barrel, the piston is connected to the push handle through a push rod, a needle plug is installed on the nipple of the barrel, a needle body is provided on the needle plug, a limit seat, a scale and a clamping block are provided on the barrel, a limit groove is provided in the limit seat, the limit groove is movably connected to the adjustment seat, a swivel is rotatably provided on the adjustment seat, the swivel is connected to the needle cover through a connecting seat, and the needle cover is used to be installed at the outer end of the needle body and connected to the urine outlet of the urinary catheter, and the needle cover is conical in shape, and a rubber plug is provided at the inner end of the needle cover.
[0005] The beneficial effects of the present invention are as follows: when performing bladder instillation, the needle cover is installed on the needle body and then directly connected to the urine outlet of the urinary catheter. Not only can the needle cover be adapted to different calibers of urine outlets of urinary catheters due to its tapered shape, but it can also avoid damage to the urinary catheter, the risk of drug spillage and needle stick injuries, and safeguard the personal safety of medical staff.
[0006] In order to prevent the adjustment seat from sliding without human operation:
[0007] As a further improvement of the above technical solution: the limit seat is arranged on the outer wall of the cylinder along the length direction, and the adjustment seat is sleeved on the outer end of the cylinder and movably connected to the cylinder, and the adjustment seat is located in the limit groove and is provided with a tooth portion that cooperates with the inner wall of one side of the limit groove to limit the movement of the adjustment seat.
[0008] The beneficial effect of this improvement is: through the setting of the adjustment seat, and the setting of a tooth portion that cooperates with the inner wall of one side of the limit groove at the position of the adjustment seat located in the limit groove, the resistance can be increased to prevent the adjustment seat from sliding and displacing without human operation, thereby affecting the stability of the needle cover.
[0009] To facilitate the adjustment of the needle cover direction:
[0010] As a further improvement of the above technical solution: the rotating ring is arranged at the outer end of the adjusting seat.
[0011] The beneficial effect of this improvement is that, by setting up the rotating ring, when the needle cover is used, the needle cover is driven to rotate via the connecting seat and adjusted to the front of the needle body for installation and use.
[0012] To limit needle guard rotation:
[0013] As a further improvement of the above technical solution: the card block is arranged in the middle position of the outer wall of the barrel at the nipple end, the structure of the card block is a rectangular parallelepiped, and the card block is adapted to the card slot opened at the corresponding position on the inner side of the connecting seat.
[0014] The beneficial effect of this improvement is that the needle cover can be restricted from rotating when the clamping slot and the clamping block are connected in cooperation.
[0015] To make it easier to read the medication amount:
[0016] As a further improvement of the above technical solution: the scale is arranged on the outer wall of the cylinder along the length direction of the cylinder, and the cylinder is transparent.
[0017] The beneficial effect of this improvement is that the establishment of the scale makes it easier for medical staff to read the amount of drug aspirated and injected.
[0018] In order to isolate and protect the needle body and needle cover:
[0019] As a further improvement of the above technical solution: the outer end of the needle body is covered with a protective cap 1, and the outer end of the needle cover is covered with a protective cap 2.
[0020] The beneficial effect of this improvement is that, by providing the protective cap 1 and the protective cap 2, the needle body and the needle cover can be isolated and protected in the initial state. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural diagram of the utility model;
[0022] Figure 2 This is a schematic diagram of the internal structure of the positive end of the utility model;
[0023] Figure 3 This is a schematic diagram of the needle cover position adjustment structure of the present utility model;
[0024] Figure 4 This is a schematic diagram of the needle cover installation and use structure of the utility model;
[0025] Figure 5 This is a schematic diagram of the internal structure of the side end of the utility model;
[0026] Figure 6 This is a schematic diagram of the clamping ring structure of the present utility model;
[0027] In the figure: 1. Cylinder body; 2. Piston; 3. Push rod; 4. Push handle; 5. Needle bolt; 6. Needle body; 7. Limit seat; 8. Scale; 9. Clamping block; 10. Limiting groove; 11. Adjusting seat; 12. Swivel; 13. Connecting seat; 14. Needle cover; 15. Rubber plug; 16. Protective cap 1; 17. Protective cap 2; 18. Clamping groove; 19. Snap ring. DETAILED DESCRIPTION
[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.
[0029] like Figure 1-6As shown, a special syringe for bladder infusion includes a barrel 1 and a snap ring 19, a piston 2 is movably provided at the inner end of the barrel 1, the piston 2 is connected to the push handle 4 through a push rod 3, a pintle 5 is installed on the nipple of the barrel 1, a needle body 6 is provided on the pintle 5, a limit seat 7, a scale 8 and a clamping block 9 are provided on the barrel 1, a limit groove 10 is provided in the limit seat 7, the limit groove 10 is movably connected to the adjustment seat 11, a swivel 12 is rotatably provided on the adjustment seat 11, the swivel 12 is connected to the needle cover 14 through a connecting seat 13, and the needle cover 14 is used to be installed at the outer end of the needle body 6 and the urine outlet of the urinary catheter. The shape of the needle cover 14 is conical, and the inner end of the needle cover 14 is provided with a rubber plug 15. When performing bladder instillation, the needle cover 14 is installed on the needle body 6 and then directly connected to the urine outlet of the urinary catheter. Not only can the needle cover 14 be tapered to adapt to different calibers of urine outlets of the urinary catheter, but it can also avoid damage to the urinary catheter, as well as the risk of drug spillage and needle stick injuries, and maintain the personal safety of medical staff. The limiting seat 7 is arranged on the outer wall of the barrel 1 along the length direction, and the adjusting seat 11 is sleeved on the outer end of the barrel 1 and movably connected to the barrel 1, and the adjusting seat 11 is located at the position of the limiting groove 10 and is provided with a position that is connected to the limiting groove 1 0 side of the tooth portion is used to limit the displacement of the adjustment seat 11, and the adjustment seat 11 is located in the limit groove 10. The position of the tooth portion that cooperates with the inner wall of one side of the limit groove 10 can increase the resistance to prevent the adjustment seat 11 from sliding and displacing without human operation, thereby affecting the stability of the needle cover 14. The swivel 12 is set at the outer end of the adjustment seat 11. Through the establishment of the swivel 12, when the needle cover 14 is used, the needle cover 14 is driven to rotate through the connecting seat 13 and adjusted to the front of the needle body 6 for installation and use. The block 9 is set in the middle position of the outer wall of the barrel 1 at the nipple end. The structure of the card block 9 is a rectangular parallelepiped, and the card block 9 is adapted to the card slot 18 opened at the corresponding position on the inner side of the connecting seat 13. When the card slot 18 is connected with the card block 9, the rotation of the needle cover 14 can be restricted. The scale 8 is arranged on the outer wall along the length direction of the barrel 1, and the barrel 1 is transparent. The establishment of the scale 8 can facilitate medical staff to read the amount of drug aspiration and injection. The outer end of the needle body 6 is provided with a protective cap 16, and the outer end of the needle cover 14 is provided with a protective cap 2 17. Through the establishment of the protective cap 16 and the protective cap 2 17, the needle body 6 and the needle cover 14 can be isolated and protected in the initial state.
[0030] The working principle of the present invention is as follows: when the patient needs bladder instillation, the protective cap 16 is removed, and the needle body 6 is inserted into the chemotherapy drug prepared in accordance with the doctor's order to aspirate the liquid medicine. After the liquid medicine is aspirated, it is only necessary to push the adjustment seat 11 to drive the needle cover 14 to move to the distal end beyond the needle end of the needle body 6 through the connecting seat 13, and then rotate the swivel 12 to drive the needle cover 14 to rotate to the front of the needle body 6 through the connecting seat 13, and then move the adjustment seat 11 in the opposite direction so that the adjustment seat 11 drives the needle cover 14 to move toward the needle body 6 through the connecting seat 13. During the movement of the needle cover 14, the needle body 6 pierces the built-in rubber plug 15 of the needle cover 14. When the card slot 18 of the connecting seat 13 is After being matched and connected with the clamping block 9 of the barrel 1, the installation operation of the needle cover 14 on the needle body 6 can be completed, so that the medical staff can remove the protective cap 17, connect the needle cover 14 to the urine outlet of the urinary catheter, and move the clamping ring 19 located at the outer end of the needle cover 14 and the urine outlet of the urinary catheter to a suitable clamping position, and then push the piston 2 to push the liquid medicine into the bladder through the urinary catheter. Finally, the urinary catheter is pulled out and discarded together with the syringe into a special drug waste trash can for centralized collection. The establishment of the rubber plug 15 at the inner end of the needle cover 14 can not only fix the needle body 6 from shaking, but also effectively prevent the residual liquid medicine from overflowing from under the needle cover 14 after the injection of the liquid medicine.
[0031] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.
[0032] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the present invention to other occasions without improvement, should be regarded as the scope of protection of the present invention.
Claims
1. A syringe for bladder infusion, comprising a barrel (1) and a retaining ring (19), wherein a piston (2) is movably provided at the inner end of the barrel (1), and the piston (2) is connected to a push handle (4) via a push rod (3), a pintle (5) is mounted on the nipple of the barrel (1), and a needle body (6) is provided on the pintle (5), characterized in that: The barrel (1) is provided with a limit seat (7), a scale (8) and a clamping block (9); a limit slot (10) is provided in the limit seat (7); the limit slot (10) is movably connected to the adjustment seat (11); a swivel (12) is rotatably provided on the adjustment seat (11); the swivel (12) is connected to the needle cover (14) through a connecting seat (13); the needle cover (14) is used to be installed at the outer end of the needle body (6) and connected to the urine outlet of the urinary catheter; the needle cover (14) is conical in shape; and a rubber plug (15) is provided at the inner end of the needle cover (14).
2. A special syringe for bladder infusion according to claim 1, characterized in that: The limiting seat (7) is arranged on the outer wall of the barrel (1) along the length direction thereof, and the adjusting seat (11) is sleeved on the outer end of the barrel (1) and movably connected to the barrel (1). The adjusting seat (11) is provided with a tooth portion that matches the inner wall of one side of the limiting groove (10) at the position where the limiting groove (10) is located, so as to limit the displacement of the adjusting seat (11).
3. The special syringe for bladder infusion according to claim 1, characterized in that: The rotating ring (12) is arranged at the outer end of the adjusting seat (11).
4. The special syringe for bladder infusion according to claim 1, characterized in that: The clamping block (9) is arranged at the middle position of the outer wall of the barrel (1) at the nipple end. The clamping block (9) has a rectangular parallelepiped structure and is adapted to a clamping groove (18) provided at a corresponding position on the inner side of the connecting seat (13).
5. The special syringe for bladder infusion according to claim 1, characterized in that: The scale (8) is arranged on the outer wall of the barrel (1) along the length direction thereof, and the barrel (1) is transparent.
6. The special syringe for bladder infusion according to claim 1, characterized in that: The outer end of the needle body (6) is covered with a protective cap 1 (16), while the outer end of the needle cover (14) is covered with a protective cap 2 (17).