Minimally invasive drug delivery device

Abstract

The utility model discloses a minimally invasive drug delivery device which comprises a multi-cavity tube and a handle portion. A pulling steel wire channel, a medicine feeding cavity and a capillary steel pipe air cavity are formed in the multi-cavity pipe. The handle part comprises a shell, a direction rotating wheel, a lock catch, a rotating button, a pulling steel wire and a multi-cavity pipeline connector, and the multi-cavity pipeline connector is connected with the handle part and the multi-cavity pipe; the direction rotating wheel is provided with a limiting clamping groove for multi-gear adjustment, and a limiting protrusion is arranged on the lower surface of the lock catch and matched with the limiting clamping groove of the direction rotating wheel. According to the minimally invasive drug delivery device, guiding is accurately controlled through the direction rotating wheel and the pulling steel wire of the handle part, meanwhile, direction fixing is completed in cooperation with the lock catch, the direction is flexibly adjusted in a narrow intervention channel, it is ensured that the tip end of an instrument can accurately reach a focus, and targeted drug delivery is conducted. In addition, the balloon achieves interventional channel pressure maintaining through inflation and deflation, tissue is expanded, and the stability of the drug delivery process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of minimally invasive dosing device, belong to medical instrument technical field. BACKGROUND

[0002] With the popularization of minimally invasive technology, the demand of precise drug delivery and targeted therapy is increasing. How to deliver drugs to specific lesions efficiently and accurately through minimally invasive means has become a technical difficulty. Minimally invasive drug delivery device is developed under this background, which delivers drugs to target areas in the body safely and efficiently through small trauma or non-invasive way, improves treatment accuracy, reduces side effects and improves patient comfort.

[0003] At present, there are many types of minimally invasive drug delivery devices, which are generally inserted into the body through a small incision during use. In order to ensure that the catheter or needle reaches the target site accurately, real-time guidance is usually provided by imaging devices such as X-ray, ultrasound, CT or MRI. The doctor can see the path of the instrument on the monitoring device and passively guide the drug delivery tip to the lesion site by adjusting the overall direction of the instrument externally. However, in some clinical situations, drugs need to be delivered accurately and stably to specific locations through very narrow intervention channels. The flexibility of traditional instruments in the body is insufficient, making it difficult to achieve real-time adjustment and precise control. Especially in some high-difficulty surgeries, such as neurosurgery or cardiovascular intervention surgery, the surgical channel is extremely narrow, and traditional drug delivery instruments are difficult to accurately reach the lesion or target area in such surgeries, and cannot flexibly adjust the drug delivery direction.

[0004] Therefore, it is necessary to design a new type of minimally invasive drug delivery device that can flexibly adjust the direction in a narrow intervention channel during minimally invasive surgery, while accurately delivering drugs through the tip structure to reduce damage to surrounding tissues, to meet the needs of high precision, flexibility and safety in minimally invasive surgery. UTILITY MODEL CONTENT

[0005] Therefore, the purpose of the utility model is to provide a minimally invasive drug delivery device that can flexibly adjust the direction in the body and accurately deliver drugs.

[0006] In order to achieve the above object, the utility model discloses a kind of minimally invasive dosing device, including multi-cavity pipe, handle part;First pulling steel wire channel, second pulling steel wire channel, dosing cavity and capillary steel tube air cavity are arranged in the multi-cavity pipe, the capillary steel tube air cavity is single-sided closed channel, top end is closed;The multi-cavity pipe includes first multi-cavity pipe, second multi-cavity pipe, first multi-cavity pipe is located at the top of multi-cavity pipe, away from handle part;Second multi-cavity pipe is located at the tail of multi-cavity pipe, close to handle part, the part of capillary steel tube air cavity in second multi-cavity pipe is provided with capillary steel tube;The handle part includes shell, direction rotating wheel, lock catch, rotating button, first pulling steel wire, second pulling steel wire, multi-cavity pipe connecting head;The direction rotating wheel includes support column, rotating disc, the upper surface of rotating disc is provided with the limiting slot of multiple gears adjustment, rotating disc lower surface is provided with the mounting column of pulling steel wire;The lower surface of lock catch is provided with limiting protrusion, and it is matched with the limiting slot of direction rotating wheel;The rear end of multi-cavity pipe connecting head is provided with dosing pipe hole, air pipe hole, first pulling steel wire extension hole, second pulling steel wire extension hole, and the front end of multi-cavity pipe connecting head is provided with cavity pipe hole, the first pulling steel wire is extended through first pulling steel wire extension hole to multi-cavity pipe from the mounting column of direction rotating wheel, and the second pulling steel wire is extended through second pulling steel wire extension hole to multi-cavity pipe from the mounting column of direction rotating wheel, and the multi-cavity pipe is inserted into the cavity pipe hole in the front end of multi-cavity pipe connecting head.

[0007] The first multi-cavity pipe is provided with a balloon, and the balloon is sleeved on the outer wall of the first cavity tube.

[0008] The first multi-cavity pipe is provided with a balloon, and the balloon is sleeved on the outer wall of the first cavity tube.

[0009] The handle part is further provided with a dosing hose and an air hose, the output end of the dosing hose is connected to the dosing pipe hole of the multi-cavity pipe connecting head, and the output end of the air hose is connected to the air pipe hole of the multi-cavity pipe connecting head.

[0010] The shell is provided with a hose clamping groove, a hose pressing plate and a multi-cavity pipe connecting head clamping groove, and the multi-cavity pipe connecting head clamping groove is used for fixing the multi-cavity pipe connecting head.

[0011] The input end of the dosing hose is further provided with a corresponding second connector, and the input end of the air hose is further provided with a corresponding first connector.

[0012] The shell comprises an upper shell and a lower shell; the rotating button comprises a rotating wheel and a cover, and the groove of the rotating wheel is provided with a first through hole; the direction rotating wheel is further provided with a second through hole penetrating the rotating disc and the supporting column; and the upper shell is provided with a third through hole.

[0013] The rotating button, the upper shell and the direction rotating wheel are fixed by screwing, and the cover is embedded in the groove.

[0014] The upper shell of the shell is provided with a lock slot, the lock is matched with the lock slot of the shell, and the lock and the corresponding fixing gasket are sequentially placed below the lock slot, and the fixing gasket is fixed on the shell by a screw.

[0015] The multi-cavity tube is further provided with a protective sleeve.

[0016] By adopting the technical scheme, the minimally invasive drug delivery device can accurately control the direction of the guide by the direction rotating wheel of the handle part and the pulling steel wire, and the direction is fixed by cooperating with the lock, so that the direction can be flexibly adjusted in a narrow intervention channel, the tip of the instrument can accurately reach the lesion, targeted drug delivery can be performed, and accurate drug delivery can be realized. In addition, the balloon realizes pressure maintaining and tissue expansion of the intervention channel by inflation and deflation, further improves the stability of the drug delivery process, reduces the damage to the surrounding healthy tissues, and improves the safety of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole schematic view of the utility model.

[0018] Figure 2 It is a structure exploded view of the utility model.

[0019] Figure 3 It is a structure exploded view of the utility model from another angle.

[0020] Figure 4 It is a handle assembly view of the utility model.

[0021] Figure 5 It is a multi-cavity tube cross-sectional view of the structure of the utility model.

[0022] Figure 6 It is a first multi-cavity tube structure view of the structure of the utility model.

[0023] Figure 7 It is a multi-cavity tube connector structure view of the utility model. DETAILED DESCRIPTION

[0024] The utility model will be further described in detail through the drawings and specific embodiments.

[0025] As Figures 1-7The utility model discloses a kind of minimally invasive dosing devices, including multi-lumen tube 1, handle 2;The first pulling steel wire channel 33, second pulling steel wire channel 34, dosing cavity 32 and capillary steel tube gas cavity 31 are provided in the inside of the multi-lumen tube 1, the capillary steel tube gas cavity 31 is single-sided closed channel, top end is closed;The multi-lumen tube 1 includes first multi-lumen tube 3, second multi-lumen tube 5, first multi-lumen tube 3 is located at the top of multi-lumen tube 1, away from handle 2;Second multi-lumen tube 5 is located at the tail of multi-lumen tube 1, close to handle 2, the part of capillary steel tube gas cavity 31 in second multi-lumen tube 5 is provided with capillary steel tube 51, for guaranteeing that entire second multi-lumen tube 5 keeps vertical during use process;Handle 2 includes shell 7, direction rotating wheel 9, lock catch 10, rotating button 8, first pulling steel wire 12, second pulling steel wire 13, multi-lumen tube connecting head 23;Direction rotating wheel 9 includes support column 92, rotating disc 91, the upper surface of rotating disc 91 is provided with multi-grade adjusting limit clamping groove 95, and the lower surface of rotating disc 91 is provided with the mounting column 94 of pulling steel wire;The lower surface of lock catch 10 is provided with limit protrusion 101, and is matched with the limit clamping groove 95 of direction rotating wheel 9;The rear end of multi-lumen tube connecting head 23 is provided with dosing tube hole 36, air pipe hole 35, first pulling steel wire extension hole 38, second pulling steel wire extension hole 37, and the front end of multi-lumen tube connecting head 23 is provided with lumen tube hole 39, the first pulling steel wire 12 extends through first pulling steel wire extension hole 38 to multi-lumen tube 1 from the mounting column 94 of direction rotating wheel 9, and the second pulling steel wire 13 extends through second pulling steel wire extension hole 37 to multi-lumen tube 1 from the mounting column 94 of direction rotating wheel 9, and the multi-lumen tube 1 is inserted into the lumen tube hole 39 in the front end of multi-lumen tube connecting head 23.

[0026] The first multi-lumen tube 3 is provided with balloon 6, and the balloon 6 is sleeved on the outer wall of the first lumen tube 3;The outer wall of the first multi-lumen tube 3 is further provided with an inflation through hole 30 corresponding to the balloon 6. The balloon 6 structure can realize effective support of the intervention channel by inflation, ensure that the instrument is stably kept at the target position during minimally invasive surgery, and reduce the error caused by equipment movement. In addition, the inflation through hole 30 is used in cooperation with the balloon 6, the inflation and deflation state of the balloon 6 can be flexibly adjusted, so that the surrounding tissue is effectively expanded during the operation process, and the compression or damage to healthy tissue is avoided.

[0027] The multi-lumen tube 1 is further provided with a protective sleeve 4 for protecting the multi-lumen tube 1.

[0028] The first pulling steel wire channel 33 and the second pulling steel wire channel 34 of the first multi-cavity tube 3 are respectively provided with a first capillary spring roll 28 and a second capillary spring roll 29, the first pulling steel wire 12 is connected with the first capillary spring roll 28, and the second pulling steel wire 13 is connected with the second capillary spring roll 29, so as to enhance the flexibility and resilience of the pulling steel wire, make it more accurate to control the direction adjustment in the minimally invasive surgery, and fix the pulling effect of the steel wire. Secondly, the spring structure can effectively buffer the stress generated in the operation process, reduce the wear of the pulling steel wire, and prolong the service life of the device.

[0029] The handle part 2 is further provided with a drug delivery hose 19 and a ventilation hose 18, the output end of the drug delivery hose 19 is connected to the drug delivery pipe hole 36 of the multi-cavity tube connector 23, and the output end of the ventilation hose 18 is connected to the ventilation pipe hole 35 of the multi-cavity tube connector 23, so as to facilitate the operation of drug delivery, inflation and deflation.

[0030] The shell 7 is provided with a hose clamping groove 15, a hose pressing plate 14 and a multi-cavity tube connector clamping groove 24, the multi-cavity tube connector clamping groove 24 is used for fixing the multi-cavity tube connector 23, so as to make the connection stable and reliable; the hose clamping groove 15 includes a drug delivery clamping groove 152 and a ventilation clamping groove 151, the input end of the drug delivery hose 19 is fixed in the drug delivery clamping groove 152, and the input end of the ventilation hose 18 is fixed in the ventilation clamping groove 151, so as to stably fix the drug delivery hose 19 and the ventilation hose 18, prevent loosening or displacement of the drug delivery hose 19 and the ventilation hose 18 in the operation process, and ensure continuous and stable delivery of the drug and the gas. The hose pressing plate 14 is arranged above the drug delivery hose 19 and the ventilation hose 18, so as to enhance the fixing effect of the hoses and avoid displacement or blockage of the hoses caused by external force.

[0031] The input end of the drug delivery hose 19 is further provided with a corresponding second connector 17, and the input end of the ventilation hose 18 is further provided with a corresponding first connector 16, so as to deliver the drug and inflate or deflate.

[0032] The shell 7 includes an upper shell 71 and a lower shell 72; the rotating button 8 includes a rotating wheel 81 and a cover 82, the groove of the rotating wheel 81 is provided with a first through hole 25; the direction rotating wheel 9 is further provided with a second through hole 93, the second through hole 93 penetrates the rotating disc 91 and the supporting column 92; and the upper shell 71 is provided with a third through hole 27.

[0033] The rotating button 8, the upper shell 71 and the direction rotating wheel 9 are sequentially screwed by the fixing screw 20 penetrating the gasket 21, the first through hole 25, the third through hole 27, the second through hole 93 and the nut 22, then the cover 82 is embedded in the groove, and the assembly is completed.

[0034] The upper shell 71 of the shell 7 is provided with a lock groove 26, the lock 10 is matched with the lock groove 26 of the shell 7, and the lock 10 and the corresponding fixing washer 11 are placed below the lock groove 26 in sequence. The fixing washer 11 is fixed on the shell 7 by a screw, so that the lock 10 is stably installed on the shell 7. The lock groove 26 is accurately matched with the lock 10, so that the stability of the installation position of the lock 10 can be ensured. And the fixing washer 11 is fixed on the shell 7 by a screw, which further enhances the firmness of the lock, so that it can be stably connected for a long time and is not easy to fall off.

[0035] In use, the angle of the direction rotating wheel 9 is adjusted by manually twisting the rotating button 8, so that the two pulling wires are pulled tight and loose, so that the first multi-cavity tube 3 is gradually bent from the vertical state. The greater the angle of the direction rotating wheel 9, the greater the bending amplitude of the first multi-cavity tube 3. When the appropriate angle is reached, the lock 10 is pushed, so that the limiting protrusion 101 is matched with the limiting clamping groove 95, so as to fix the angle and ensure that the instrument accurately reaches the lesion site. At this time, the external air source is connected through the first joint 16 for inflation, the balloon 6 expands the interventional channel, and the operation is stable. Subsequently, the drug is input through the second joint 17, the drug flows through the drug feeding hose 19, and finally enters the drug feeding cavity 32, so as to realize precise targeted delivery. After the drug feeding is completed, the balloon 6 discharges the gas through the inflation hole 30, the volume is reduced, and the instrument can be smoothly removed.

[0036] By adopting the technical scheme, the minimally invasive drug delivery device of the utility model, through the direction rotating wheel 9 of handle part 2 and the pulling wire accurate control guide, and the lock 10 completes the direction fixation, the direction is adjusted flexibly in the narrow interventional channel, the tip of the instrument can accurately reach the lesion, and the targeted drug delivery is carried out, so as to realize the precise drug delivery. In addition, the balloon 6 realizes the interventional channel pressure maintaining and tissue expansion through inflation and deflation, further improves the stability of the drug delivery process, reduces the damage to the surrounding healthy tissue, and improves the operation safety.

[0037] Obviously, the above embodiments are only examples for clearly illustrating, and not limit the embodiments. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can be made. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A minimally invasive drug delivery device, characterized in that: It comprises a multi-lumen tube and a handle portion; the multi-lumen tube is provided with a first pulling wire channel, a second pulling wire channel, a drug delivery cavity and a capillary steel tube air cavity, the capillary steel tube air cavity is a single-sided closed channel with a closed top; the multi-lumen tube comprises a first multi-lumen tube and a second multi-lumen tube, the first multi-lumen tube is located at the top of the multi-lumen tube, away from the handle portion; the second multi-lumen tube is located at the tail of the multi-lumen tube, close to the handle portion, and the capillary steel tube air cavity is provided with a capillary steel tube in the second multi-lumen tube; the handle portion comprises an outer shell, a direction wheel, a lock, a rotating button, a first pulling wire, a second pulling wire, and a multi-lumen pipe connector; the direction wheel comprises a support column and a rotating disk, The upper surface of the rotating disk is provided with a limit slot with multi-level adjustment, and the lower surface of the rotating disk is provided with a mounting post for a pulling wire; the lower surface of the lock is provided with a limit protrusion, which cooperates with the limit slot of the direction wheel; the rear end of the multi-lumen pipe connector is provided with a drug delivery tube hole, a ventilation tube hole, a first pulling wire extension hole, and a second pulling wire extension hole, and the front end of the multi-lumen pipe connector is provided with a lumen hole, the first pulling wire extends from the mounting post of the direction wheel through the first pulling wire extension hole to the multi-lumen tube, the second pulling wire extends from the mounting post of the direction wheel through the second pulling wire extension hole to the multi-lumen tube, and the multi-lumen tube is inserted into the lumen hole at the front end of the multi-lumen pipe connector.

2. The minimally invasive drug delivery device according to claim 1, wherein: The first multi-lumen tube is provided with a balloon, which is sleeved on the outer wall of the first lumen tube; the outer wall of the first multi-lumen tube is also provided with an inflation hole corresponding to the balloon.

3. The minimally invasive drug delivery device according to claim 1, wherein: The first pulling wire channel and the second pulling wire channel of the first multi-lumen tube are respectively provided with a first capillary spring and a second capillary spring. The first pulling wire is connected to the first capillary spring coil, and the second pulling wire is connected to the second capillary spring coil.

4. The minimally invasive drug delivery device according to claim 1, wherein: The handle is further provided with a medication hose and a ventilation hose. The output end of the medication hose is connected to the medication tube hole of the multi-cavity pipe connector; the output end of the ventilation hose is connected to the ventilation tube hole of the multi-cavity pipe connector.

5. The minimally invasive drug delivery device according to claim 4, wherein: The shell is provided with a hose slot, a hose pressure plate, and a multi-cavity pipe connector slot. The multi-cavity pipe connector slot is used to fix the multi-cavity pipe connector; the hose slot includes a medication slot and a ventilation slot. The input end of the medication hose is fixed in the medication slot, and the input end of the ventilation hose is fixed in the ventilation slot; the hose pressure plate is pressed on top of the medication hose and the ventilation hose.

6. The minimally invasive drug delivery device according to claim 5, wherein: The input end of the drug delivery hose is further provided with a corresponding second connector, and the input end of the ventilation hose is further provided with a corresponding first connector.

7. The minimally invasive drug delivery device according to claim 1, wherein: The shell includes an upper shell and a lower shell; the rotating button includes a rotating wheel and a button cover, and the groove of the rotating wheel is provided with a first through hole; the direction wheel is also provided with a second through hole, and the second through hole passes through the rotating disk and the support column; the upper shell is provided with a third through hole.

8. The minimally invasive drug delivery device according to claim 7, wherein: The rotating button, the upper shell and the direction wheel are fixed by screw connection, and the button cover is embedded in the groove.

9. The minimally invasive drug delivery device according to claim 7, wherein: The upper shell of the shell is provided with a lock buckle groove, the lock buckle matches the lock buckle groove of the shell, and the lock buckle and the corresponding fixing gasket are placed in sequence below the lock buckle groove, and the fixing gasket is fixed to the shell by screws.

10. The minimally invasive drug delivery device according to any one of claims 1 to 9, characterized in that: The multi-lumen tube is also provided with a protective sleeve.

Images