A multi-tube injection device for brain drugs

Abstract

The present invention discloses a multi-tube brain drug injection device, comprising a catheter assembly, an adjustment handle and a connector. The catheter assembly comprises an outer sleeve, a filler and an injection tube. The filler is filled inside the outer sleeve, and a plurality of catheter channels are provided at equal angles in the middle of the filler. A plurality of injection tubes are provided, and the plurality of injection tubes are respectively sleeved inside the plurality of catheter channels. The injection tubes are slidably connected to the catheter channels, and the two ends of the outer sleeve and the injection tubes are respectively fixed to the adjustment handle and the connector. The multi-tube brain drug injection device can inject a plurality of drugs at the same time, and the size of the drug injection area can be adjusted according to demand, thereby reducing the workload of medical staff and the risk of drug injection.

Description

Technical Field

[0001] The present invention relates to the technical field of brain drug injection, in particular to a brain drug multi-tube injection device. Background Art

[0002] Intraventricular injection (intracerebroventricular injection) is to inject drugs directly into the ventricles. For chronic experiments, a cannula must be buried in the brain, with the end of the cannula about 1 mm away from the wall of the lateral ventricle and fixed to the skull. During the experiment, the injection tube is passed through the cannula into the lateral ventricle and a trace amount of drug is injected.

[0003] Existing intraventricular injection devices can only inject one drug at a time. During the treatment of some patients, multiple drugs need to be injected into the ventricles at the same time. If multiple cannulas are pre-buried in the human brain, it will increase the workload of medical staff and increase the risk of drug injection. Therefore, we propose a brain drug multi-tube injection device. Summary of the invention

[0004] The object of the present invention is to provide a multi-tube brain drug injection device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-tube brain drug injection device, comprising a catheter assembly, an adjustment handle and a connector, the catheter assembly comprising an outer sleeve, a filler and an injection tube, the filler is filled on the inner side of the outer sleeve, a plurality of catheter channels are provided at equal angles in the middle of the filler, a plurality of injection tubes are provided, and the plurality of injection tubes are respectively sleeved on the inside of the plurality of catheter channels, the injection tubes are slidably connected to the catheter channels, and the two ends of the outer sleeve and the injection tube are respectively fixed to the adjustment handle and the connector.

[0006] Preferably, the connecting head includes a shell, a support plate and a connecting piece, the shell has a conical structure, and one end of the outer sleeve is fixed to one end of the small end face of the shell, the support plate is fixed to the inner side of one end of the large end face of the shell, and there are multiple connecting pieces, and the multiple injection tubes are rotatably connected to the support plate through the connecting pieces respectively.

[0007] Preferably, the connecting member includes a support tube and a support shaft, a plurality of through grooves are provided at equal angles on the support plate, the support tube is located in the middle of the through grooves, sliding holes are symmetrically provided on the inner side of the through grooves, a support shaft is symmetrically fixed on the outer side of the support tube, one end of the support shaft away from the support tube is inserted in the sliding hole and is slidably connected to the sliding hole, the injection tube is inserted in the support tube and is slidably connected to the inner wall of the support tube.

[0008] Preferably, a limiting ring is sleeved on the outer side of the injection tube port, and the limiting ring is fixedly connected to the injection tube.

[0009] Preferably, the adjusting handle comprises a mounting plate, a support, a sliding rod, an adjusting cylinder, an adjusting block and a fixing plate, the end of the outer sleeve away from the shell is fixed to the mounting plate, the adjusting cylinder is rotatably connected to the side of the mounting plate away from the outer sleeve through the support, the sliding rod and the fixing plate are both located on the inner side of the adjusting cylinder, there are multiple sliding rods, and the two ends of the multiple sliding rods are respectively fixed to the mounting plate and the fixing plate, the adjusting block is provided with multiple through holes, the adjusting block is slidably sleeved on the outer side of the sliding rod through the through holes, the outer side of the adjusting block is provided with an external thread, the inner side of the adjusting cylinder is provided with an internal thread, the adjusting block is threadedly connected to the adjusting cylinder, the end of the injection tube away from the shell passes through the mounting plate, the adjusting block, the fixing plate and the adjusting cylinder in sequence and extends to the outer side of the adjusting cylinder, and the adjusting block is slidably connected to the mounting plate, the fixing plate and the adjusting cylinder, respectively, and is fixedly connected to the adjusting block.

[0010] Preferably, the support member comprises a fixed cylinder and a support bearing, the inner ring of the support bearing is fixedly sleeved on the outside of the adjustment cylinder, the outer ring is fixed to the inner wall of the fixed cylinder, and one end of the fixed cylinder is fixed to the mounting plate.

[0011] Preferably, a limiting device is provided on the outer side of the adjusting cylinder, and the limiting device includes a support rod, a limiting plate and a fixing part. The limiting plate is located on the outer side of one end of the adjusting cylinder away from the mounting plate, and the limiting plate is fixed to the mounting plate through the support rod. An opening is provided in the middle of the limiting plate, and the injection tube passes through the opening, and the fixing part is fixed to the mounting plate.

[0012] Preferably, the fixing member includes a screw and a knob, the limiting plate is provided with a threaded hole, the screw is inserted into the threaded hole and is threadedly connected to the threaded hole, and the knob is fixed to one end of the screw away from the adjusting cylinder.

[0013] Preferably, a plurality of the fixing members are provided, and the plurality of limiting members are distributed on the limiting plate at equal angles.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention can inject multiple drugs at the same time, and the size of the drug injection area can be adjusted according to demand, thereby reducing the workload of medical staff and the risk of drug injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall application of the present invention;

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the adjustment handle of the present invention;

[0019] Figure 4 This is a schematic diagram of the connector structure of the present invention;

[0020] Figure 5 for Figure 3 A magnified image of area A;

[0021] Figure 6 for Figure 4 Enlarged view of area B.

[0022] In the figure: 1-catheter assembly; 2-outer sleeve; 3-filler; 4-injection tube; 5-catheter channel; 6-adjustment handle; 7-connector; 8-housing; 9-support plate; 10-connector; 11-support cylinder; 12-support shaft; 13-through groove; 14-limiting ring; 15-mounting plate; 16-support member; 17-slide rod; 18-adjustment cylinder; 19-adjustment block; 20-fixed plate; 21-support cylinder; 22-support bearing; 23-limiting device; 24-support rod; 25-limiting plate; 26-fixed member; 27-screw; 28-knob. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-6 The present invention provides a technical solution: a multi-tube brain drug injection device, comprising a catheter assembly 1, an adjustment handle 6 and a connector 7, the catheter assembly 1 comprising an outer sleeve 2, a filler 3 and an injection tube 4, the filler 3 is filled on the inner side of the outer sleeve 2, a plurality of catheter channels 5 are provided at equal angles in the middle of the filler 3, a plurality of injection tubes 4 are provided, and the plurality of injection tubes 4 are respectively sleeved inside the plurality of catheter channels 5, the injection tubes 4 are slidably connected with the catheter channels 5, the two ends of the outer sleeve 2 and the injection tubes 4 are respectively fixed to the adjustment handle 6 and the connector 7, and a plurality of drugs can be injected simultaneously through the plurality of injection tubes 4.

[0025] The connecting head 7 includes a shell 8, a support plate 9 and a connecting piece 10. The shell 8 has a conical structure, and one end of the outer sleeve 2 is fixed to one end of the small end face of the shell 8. The support plate 9 is fixed to the inner side of one end of the large end face of the shell 8. There are multiple connecting pieces 10, and multiple injection tubes 4 are rotatably connected to the support plate 9 through the connecting pieces 10 respectively.

[0026] The connecting member 10 includes a supporting tube 11 and a supporting shaft 12. A plurality of through grooves 13 are provided at equal angles on the supporting plate 9. The supporting tube 11 is located in the middle of the through groove 13. A sliding hole is symmetrically provided on the inner side of the through groove 13. A supporting shaft 12 is symmetrically fixed on the outer side of the supporting tube 11. The end of the supporting shaft 12 away from the supporting tube 11 is inserted into the sliding hole and is slidably connected to the sliding hole. The injection tube 4 is inserted into the supporting tube 11 and is slidably connected to the inner wall of the supporting tube 11. After the connecting head 7 enters the patient's brain, a force is applied to the injection tube 4 so that it can be extended from the inside of the shell 8. A plurality of injection tubes 4 spread around the shell 8 to make the drug injection more uniform. The supporting tube 11 can rotate according to the extended length of the injection tube 4 to prevent the injection tube 4 from getting stuck when moving. After the drug injection is completed, a pulling force is applied to the injection tube 4 so that its end can be stored in the inside of the shell 8.

[0027] A limiting ring 14 is sleeved on the outer side of the port of the injection tube 4 , and the limiting ring 14 is fixedly connected to the injection tube 4 , so as to prevent the injection tube 4 from being separated from the support tube 11 .

[0028] The adjustment handle 6 includes a mounting plate 15, a support member 16, a slide bar 17, an adjustment tube 18, an adjustment block 19 and a fixing plate 20. The end of the outer sleeve 2 away from the housing 8 is fixed to the mounting plate 15. The adjustment tube 18 is rotatably connected to the side of the mounting plate 15 away from the outer sleeve 2 through the support member 16. The slide bar 17 and the fixing plate 20 are both located on the inner side of the adjustment tube 18. The slide bar 17 is provided with a plurality of slide bars, and the two ends of the plurality of slide bars 17 are respectively fixed to the mounting plate 15 and the fixing plate 20. The adjustment block 19 is provided with a plurality of through holes. The adjustment block 19 is slidably sleeved on the outer side of the slide bar 17 through the through holes. The outer side of the adjustment block 19 is provided with The adjusting cylinder 18 has an external thread, and an internal thread is provided on the inner side thereof. The adjusting block 19 is threadedly connected to the adjusting cylinder 18. The end of the injection tube 4 away from the shell 8 passes through the mounting plate 15, the adjusting block 19, the fixing plate 20 and the adjusting cylinder 18 in sequence and extends to the outside of the adjusting cylinder 18. The adjusting block 19 is slidably connected to the mounting plate 15, the fixing plate 20 and the adjusting cylinder 18 respectively, and is fixedly connected to the adjusting block 19. When adjusting the extended length of the injection tube 4, since the adjusting cylinder 18 is threadedly connected to the adjusting block 19, the adjusting cylinder 18 is rotated so that the adjusting block 19 can slide on the sliding rod 17, thereby realizing the adjustment of the extended length of the injection tube 4.

[0029] The support member 16 includes a fixed cylinder 21 and a support bearing 22. The inner ring of the support bearing 22 is fixedly sleeved on the outer side of the adjustment cylinder 18, and the outer ring is fixed to the inner wall of the fixed cylinder 21. One end of the fixed cylinder 21 is fixed to the mounting plate 15. The support member 16 not only plays a fixing role for the adjustment, but also enables it to rotate relative to the mounting plate 15.

[0030] A limiting device 23 is provided on the outside of the adjusting cylinder 18, and the limiting device 23 includes a support rod 24, a limiting plate 25 and a fixing member 26. The limiting plate 25 is located on the outside of the adjusting cylinder 18 away from one end of the mounting plate 15, and the limiting plate 25 is fixed to the mounting plate 15 through the support rod 24. An opening is provided in the middle of the limiting plate 25, and the injection tube 4 passes through the opening. The fixing member 26 is fixed on the mounting plate 15. After the position of the injection tube 4 is adjusted, the limiting device 23 can be used to fix the adjusting cylinder 18 to prevent the position of the injection tube 4 from moving when the drug is injected.

[0031] The fixing member 26 includes a screw rod 27 and a knob 28. A threaded hole is provided on the limiting plate 25. The screw rod 27 is inserted into the threaded hole and is threadedly connected to the threaded hole. The knob 28 is fixed to the end of the screw rod 27 away from the adjusting cylinder 18. By rotating the knob 28, the end of the screw rod 27 is abutted against the adjusting cylinder 18 to fix the position of the adjusting cylinder 18. When the adjusting cylinder 18 is rotated again, the knob 28 is rotated to separate the end of the screw rod 27 from the adjusting cylinder 18.

[0032] There are multiple fixing members 26, and the multiple limiting members are distributed at equal angles on the limiting plate 25, so that the fixing of the adjusting cylinder 18 is more stable.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-tube brain drug injection device, comprising a catheter assembly (1), an adjustment handle (6) and a connector (7), characterized in that: The catheter assembly (1) comprises an outer sleeve (2), a filler (3) and an injection tube (4); the filler (3) is filled inside the outer sleeve (2); a plurality of catheter channels (5) are provided at equal angles in the middle of the filler (3); a plurality of injection tubes (4) are provided, and the plurality of injection tubes (4) are respectively sleeved inside the plurality of catheter channels (5); the injection tube (4) is slidably connected to the catheter channels (5); one end of the outer sleeve (2) and the injection tube (4) are fixed to an adjustment handle (6); and the other ends of the outer sleeve (2) and the injection tube (4) are fixed to a connector (7); The connector (7) comprises a shell (8), a support plate (9) and a connecting piece (10); the shell (8) is of a conical structure, one end of the outer sleeve (2) is fixed to one end of the small end face of the shell (8), the support plate (9) is fixed to the inner side of one end of the large end face of the shell (8), a plurality of connecting pieces (10) are provided, and the plurality of injection tubes (4) are rotatably connected to the support plate (9) via the connecting pieces (10) respectively; The connecting member (10) comprises a supporting tube (11) and a supporting shaft (12); a plurality of through grooves (13) are provided on the supporting plate (9) at equal angles; the supporting tube (11) is located in the middle of the through groove (13); sliding holes are symmetrically provided on the inner side of the through groove (13); a supporting shaft (12) is symmetrically fixed on the outer side of the supporting tube (11); an end of the supporting shaft (12) away from the supporting tube (11) is inserted into the sliding hole and is slidably connected to the sliding hole; the injection tube (4) is inserted into the supporting tube (11) and is slidably connected to the inner wall of the supporting tube (11).

2. A brain drug multi-tube injection device according to claim 1, characterized in that: A limiting ring (14) is sleeved on the outer side of the port of the injection tube (4), and the limiting ring (14) is fixedly connected to the injection tube (4).

3. A brain drug multi-tube injection device according to claim 2, characterized in that: The adjustment handle (6) comprises a mounting plate (15), a support member (16), a slide rod (17), an adjustment tube (18), an adjustment block (19) and a fixing plate (20); one end of the outer sleeve (2) away from the housing (8) is fixed to the mounting plate (15); the adjustment tube (18) is rotatably connected to the side of the mounting plate (15) away from the outer sleeve (2) through the support member (16); the slide rod (17) and the fixing plate (20) are both located on the inner side of the adjustment tube (18); a plurality of slide rods (17) are provided, and the two ends of the plurality of slide rods (17) are respectively fixed to the mounting plate (15) and the fixing plate (20); the adjustment block (19 ) is provided with a plurality of through holes, the adjusting block (19) is slidably sleeved on the outer side of the slide rod (17) through the through holes, the outer side of the adjusting block (19) is provided with an external thread, the inner side of the adjusting tube (18) is provided with an internal thread, the adjusting block (19) is threadedly connected to the adjusting tube (18), the end of the injection tube (4) away from the housing (8) passes through the mounting plate (15), the adjusting block (19), the fixing plate (20) and the adjusting tube (18) in sequence and extends to the outer side of the adjusting tube (18), and the adjusting block (19) is slidably connected to the mounting plate (15), the fixing plate (20) and the adjusting tube (18) respectively, and is fixedly connected to the adjusting block (19).

4. A brain drug multi-tube injection device according to claim 3, characterized in that: The support member (16) comprises a fixed cylinder (21) and a support bearing (22); the inner ring of the support bearing (22) is fixedly sleeved on the outside of the adjustment cylinder (18); the outer ring is fixed to the inner wall of the fixed cylinder (21); and one end of the fixed cylinder (21) is fixed to the mounting plate (15).

5. A brain drug multi-tube injection device according to claim 4, characterized in that: A limiting device (23) is provided on the outer side of the adjusting cylinder (18), and the limiting device (23) comprises a support rod (24), a limiting plate (25) and a fixing member (26). The limiting plate (25) is located on the outer side of the adjusting cylinder (18) at one end away from the mounting plate (15), and the limiting plate (25) is fixed to the mounting plate (15) via the support rod (24). An opening is provided in the middle of the limiting plate (25), and the injection tube (4) passes through the opening. The fixing member (26) is fixed to the mounting plate (15).

6. A brain drug multi-tube injection device according to claim 5, characterized in that: The fixing member (26) comprises a screw rod (27) and a knob (28). The limiting plate (25) is provided with a threaded hole. The screw rod (27) is inserted into the threaded hole and is threadedly connected to the threaded hole. The knob (28) is fixed to an end of the screw rod (27) away from the adjusting cylinder (18).

7. A brain drug multi-tube injection device according to claim 6, characterized in that: A plurality of fixing members (26) are provided, and the plurality of limiting members are distributed at equal angles on the limiting plate (25).

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