Medical auxiliary drug delivery device

Abstract

The invention discloses a medical auxiliary drug delivery device, relates to the technical field of medical treatment, and aims to solve the problems that an existing drug grinding device is poor in grinding effect, easy to block, single in function, capable of caking powder and the like. The device comprises a shell, a multi-stage grinding mechanism, a medicine conveying and feeding assembly, a medicine feeding control head and a motor. The multi-stage grinding mechanism is composed of a crushing assembly and a grinding assembly, and the crushing assembly is connected with a motor through a first ratchet wheel and conducts primary crushing on medicine; the grinding assembly is in linkage with the hollow shaft through a compression spring, intermittent vibration is achieved, and medicine powder is prevented from being bonded and falling is accelerated. The medicine conveying and feeding assembly is driven by a second ratchet wheel and the motor in the reverse direction, and the ground medicine powder is conveyed to the detachable medicine feeding control head through the screw rod. Grinding and dosing modes are switched through positive and negative rotation of the motor: during positive driving, multiple stages of grinding mechanisms work cooperatively, so that the uniformity of medicine powder is improved, and blockage is avoided; during reverse driving, the drug delivery assembly automatically delivers drugs, and integrated drug delivery is achieved.

Description

Technical Field

[0001] The invention relates to the field of medical technology, in particular to a medical auxiliary drug delivery device. Background Art

[0002] In the medical field, the administration of oral drugs often requires adjusting the dosage or form according to the patient's needs. In particular, for patients with dysphagia, tablets or capsules often need to be ground into powder before taking. There are many drug grinding and drug delivery devices in the prior art, but they still have the following shortcomings: 1. Limited grinding effect: Traditional equipment mostly adopts a single-stage crushing structure, which makes it difficult to achieve fine processing of drug powder. It cuts the drug with a single blade, but the uniformity of the particles after crushing is poor, and large particles are easily left, affecting patient absorption. In addition, after a single grinding, the drug powder is easy to accumulate on the screen, causing blockage (for example, frequent shutdown for cleaning is required, reducing efficiency).

[0003] 2. Single function: Existing devices usually separate the grinding and dosing processes. For example, the ground drug powder needs to be manually transferred to the dosing container (such as a syringe or a medicine spoon), which is cumbersome and poses a risk of contamination.

[0004] 3. Powder agglomeration problem: Drug powder is easy to agglomerate into agglomerates due to pressure or humidity during the grinding process. Existing technologies mostly rely on external vibrators to assist in material dropping, which not only increases energy consumption, but may also cause fluctuations in drug dosage due to uneven vibration.

[0005] 4. Complex drive control: Some multi-stage grinding devices require independent motors to control the crushing and conveying modules respectively, which leads to complex circuit design, high cost, insufficient coordination, and difficulty in achieving efficient switching.

[0006] In view of the above problems, there is an urgent need for a medical auxiliary device that integrates multi-stage grinding, anti-clogging and automatic drug delivery functions to improve the quality of drug powder, operation convenience and drug delivery accuracy. Summary of the invention

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: A medical auxiliary drug delivery device, comprising: a housing, a multi-stage grinding mechanism, a delivery drug delivery component, and a drug delivery control head; The multi-stage grinding mechanism is installed in the shell, and the multi-stage grinding mechanism is used to grind medicines; The delivery and drug delivery component is fixedly mounted at one end of the housing and is used to deliver the drug ground by the multi-stage grinding mechanism to the drug delivery control head. The drug delivery control head is disassembled by threading and is arranged on the delivery and drug delivery component. A motor is fixedly disposed in the housing; the motor is used to drive and switch the working states of the delivery and dosing assembly and the multi-stage grinding mechanism by changing the rotation direction; Wherein, the multi-stage grinding mechanism comprises a crushing assembly, which is fixedly arranged in the housing and connected to the motor through a first ratchet; A crushing assembly, disposed in the housing, for secondary grinding of the medicine crushed by the crushing assembly; A conical collecting bucket, fixedly disposed on the housing, for receiving and collecting the medicine after secondary grinding by the grinding assembly; The medicine inlet is penetrated and opened on the shell.

[0008] Further, preferably, the crushing assembly comprises: a fixed ring frame, the fixed ring frame is fixedly arranged in the shell, and a crushing net is fixedly arranged on the fixed ring frame; A plurality of limiting guide grooves are evenly and fixedly arranged on the fixed ring frame around the circumference; one end of a cleaning rod is slidably arranged in the limiting guide groove through a slider, the other end of the cleaning rod is rotatably connected to one end of a connecting rod, the other end of the connecting rod is rotatably arranged on an adjusting ring, and the adjusting ring is slidably arranged on the hollow shaft; A crushing roller is coaxially fixed on the hollow shaft; a first compression spring is arranged between the crushing roller and the adjusting ring through the hollow shaft sleeve.

[0009] Further, preferably, a first top ring is coaxially fixedly provided on the hollow shaft, and the first top ring abuts against the adjustment ring.

[0010] Further, preferably, the first ratchet comprises an outer ratchet ring and an inner ratchet ring; The outer ring of thorns is connected to the hollow shaft; the inner ring of thorns is coaxially connected to the rotating shaft, and the rotating shaft is rotatably arranged in the hollow shaft and connected to the motor.

[0011] Further, preferably, the crushing assembly comprises: A sliding bin is fixedly arranged on the inner wall of the housing; a fixing ring buckle is slidably connected in the sliding bin, and a second compression spring is arranged between the fixing ring buckle and the sliding bin; A crushing net, fixedly arranged on the fixing ring buckle; The crushing roller is slidably arranged on the hollow shaft and connected to one end of the third compression spring, and the other end of the third compression spring is connected to the hollow shaft.

[0012] Further, preferably, a second top ring is fixedly provided on the crushing net, the second top ring abuts against a third top ring, and the third top ring is fixedly provided on the hollow shaft.

[0013] Further, preferably, the drug delivery assembly comprises: a drug delivery tube, a spiral rod, and a second ratchet; One end of the drug delivery tube is fixedly arranged on the housing, the spiral rod is rotatably arranged in the drug delivery tube, and one end of the spiral rod is connected to the rotating shaft through the second ratchet; The other end of the drug delivery tube is connected to the drug delivery control head through thread disassembly.

[0014] Further, preferably, the second ratchet wheel rotates and locks in an opposite direction to the first ratchet wheel.

[0015] Further, preferably, the second ratchet comprises an outer ratchet ring and an inner ratchet ring; The outer ratchet ring is connected to the spiral rod; the inner ratchet ring is connected to the rotating shaft.

[0016] Furthermore, preferably, a control knob is further included, wherein the control knob is arranged on the housing and connected to the motor lead.

[0017] Compared with the prior art, the present invention provides a medical auxiliary drug delivery device having the following beneficial effects: by changing the rotation direction of the motor, an integrated design of drug grinding and drug delivery is achieved.

[0018] 1. When the motor rotates forward, it drives the crushing component to perform the first crushing process on the medicine to reduce the volume of the medicine. At the same time, in the process of crushing the medicine, it can prevent the medicine from getting stuck in the drop hole, thereby ensuring that the medicine can fall smoothly into the crushing component, enhancing the effect and efficiency of the medicine crushing.

[0019] When the medicine is crushed to the set size, it falls onto the crushing component for secondary crushing. The crushing component rotates synchronously with the crushing component to grind the medicine that falls on it. At the same time, the crushing component will produce intermittent shaking during the crushing process. The intermittent shaking can make the powdered medicine stick together. At the same time, the intermittent shaking can also increase the falling of the powdered medicine into the conical collection barrel, avoiding the accumulation of medicine powder after the secondary grinding, and reducing the continuous grinding effect of the grinding component.

[0020] By carrying out secondary processing of crushing and grinding the medicine, the effect of powder grinding of the medicine is significantly improved, and at the same time, the medicine is prevented from being stuck in the drop hole.

[0021] 2. When the motor rotates in the reverse direction, the crushing component and the crushing component stop running, and the delivery and dosing component starts running, delivering the medicine in the conical collection barrel to the dosing control head. The medicine squeezes the dosing control head, and the dosing control head opens under the squeezing action, that is, the medicine is discharged evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of a medical auxiliary drug delivery device; Figure 2 A schematic diagram of a multi-stage grinding mechanism of a medical auxiliary drug delivery device; Figure 3 A schematic diagram of a crushing component of a medical auxiliary drug delivery device; Figure 4 A schematic diagram of a broken component of a medical auxiliary drug delivery device from a bottom up view; Figure 5 A schematic diagram of the linkage of a crushing component of a medical auxiliary drug delivery device; Figure 6 This is an enlarged schematic diagram of a medical auxiliary drug delivery device at point A; Figure 7 A schematic diagram of a crushing component of a medical auxiliary drug delivery device; Figure 8 A schematic diagram of a conical collection barrel of a medical auxiliary drug delivery device; Fig. 9 A schematic diagram of a drug delivery component of a medical-assisted drug delivery device.

[0023] In the figure: 1. shell; 2. multi-stage grinding mechanism; 21. crushing assembly; 211. fixed ring frame; 212. limiting guide groove; 213. crushing net; 214. cleaning rod; 215. crushing roller; 216. first compression spring; 217. adjustment ring; 218. first top ring; 219. connecting rod; 2110. slider; 22. crushing assembly; 221. fixed ring buckle; 222. crushing net; 223. second compression spring; 224. sliding bin; 225. crushing roller; 226. third compression spring; 23. conical collecting barrel; 24. first ratchet; 25. medicine inlet; 3. drug delivery assembly; 31. drug delivery tube; 32. spiral rod; 33. second ratchet; 4. drug delivery control head; 5. control knob; 6. hollow shaft; 7. rotating shaft; 8. motor. DETAILED DESCRIPTION

[0024] Reference Figure 1 to Figure 9 , the present invention provides a technical solution: a medical auxiliary drug delivery device, comprising: a housing 1, a multi-stage grinding mechanism 2, a delivery and drug delivery component 3, and a drug delivery control head 4; The multi-stage grinding mechanism 2 is installed in the housing 1, and the multi-stage grinding mechanism 2 is used to grind medicines; The delivery and drug delivery component 3 is fixedly mounted at one end of the housing 1, and is used to deliver the drug ground by the multi-stage grinding mechanism 2 to the drug delivery control head 4. The drug delivery control head 4 is disassembled by thread and is arranged on the delivery and drug delivery component 3; The motor 8 is fixedly disposed in the housing 1; the motor 8 is used to drive and switch the working states of the delivery and dosing component 3 and the multi-stage grinding mechanism 2 by changing the rotation direction; The multi-stage grinding mechanism 2 includes a crushing assembly 21, which is fixedly disposed in the housing 1 and connected to the motor 8 via a first ratchet 24; A crushing assembly 22 is disposed in the housing 1 and is used for secondary grinding of the medicine crushed by the crushing assembly 21; A conical collecting barrel 23 is fixedly mounted on the housing 1 and is used to receive and collect the medicines after the second grinding of the grinding assembly 22; The medicine inlet 25 is formed through the shell 1 .

[0025] Put the medicine into the housing 1 through the feed port 25, start the motor 8 to rotate in the forward direction, and drive the crushing assembly 21 to perform the first crushing process on the medicine under the action of the first ratchet 24 to reduce the volume of the medicine. In the process of crushing the medicine, the crushing assembly 21 can prevent the medicine from being stuck in the drop hole, thereby ensuring that the medicine can smoothly fall into the grinding assembly 22, thereby enhancing the effect and efficiency of crushing the medicine.

[0026] When the medicine is crushed to a set size, the medicine falls onto the crushing assembly 22 for secondary crushing. The crushing assembly 22 rotates synchronously with the crushing assembly 21, so that the medicine falling thereon can be ground at will. At the same time, the crushing assembly 22 will produce intermittent shaking during the crushing process. The intermittent shaking can make the powdered medicine stick together. At the same time, the intermittent shaking can also increase the falling of the powdered medicine into the conical collection barrel 23, avoiding the accumulation of medicine powder after the secondary grinding, and reducing the continuous grinding effect of the grinding assembly 22.

[0027] After the secondary grinding, the medicine becomes powder and falls into the conical collecting barrel 23. After all the medicines are ground, the motor 8 is adjusted to rotate in reverse. Under the action of the first ratchet 24, the grinding assembly 22 and the crushing assembly 21 stop running, and the delivery and dosing assembly 3 starts to run, and the medicine in the conical collecting barrel 23 is delivered to the dosing control head 4. The medicine squeezes the dosing control head 4, and the dosing control head 4 opens under the squeezing action, that is, the medicine is discharged evenly.

[0028] It should be noted that when the motor 8 stops rotating, the drug delivery assembly 3 stops running the drug, that is, the force of the drug squeezing the drug delivery control head 4 disappears, and the drug delivery control head 4 automatically closes and stops until the drug is delivered.

[0029] As a preferred embodiment, the crushing assembly 21 comprises: a fixed ring frame 211, the fixed ring frame 211 is fixedly arranged in the housing 1, and a crushing net 213 is fixedly arranged on the fixed ring frame 211; A plurality of limiting guide grooves 212 are evenly and fixedly arranged on the fixed ring frame 211 around the circumference; one end of a cleaning rod 214 is slidably arranged in the limiting guide groove 212 through a slider 2110, and the other end of the cleaning rod 214 is rotatably connected to one end of a connecting rod 219, and the other end of the connecting rod 219 is rotatably arranged on an adjusting ring 217, and the adjusting ring 217 is slidably arranged on the hollow shaft 6; The crushing roller 215 is coaxially fixedly arranged on the hollow shaft 6 ; a first compression spring 216 is sleeved between the crushing roller 215 and the adjusting ring 217 through the hollow shaft 6 .

[0030] A first top ring 218 is coaxially fixedly disposed on the hollow shaft 6 , and the first top ring 218 abuts against the adjustment ring 217 .

[0031] When the motor 8 rotates in the forward direction, the hollow shaft 6 drives the crushing roller 215 to rotate around the crushing net 213 to perform the primary crushing operation on the tablets thereon.

[0032] During the crushing process, since the first top ring 218 rotates along with the hollow shaft 6 , the first top ring 219 intermittently changes the contact state with the adjustment ring 217 , so that the adjustment ring 217 intermittently slides up and down on the concentric shaft 6 .

[0033] During the intermittent up and down sliding of the adjusting ring 217, the upward sliding of the adjusting ring 217 causes the cleaning rod 214 to slide in the limiting guide groove 212 through the connecting rod 219, that is, the cleaning rod 214 moves in a direction away from the crushing net 213, thereby releasing the connection with the crushing net 213. At this time, the medicines whose crushed size matches the size of the drop hole of the crushing net 213 will fall onto the crushing assembly 22 for a second grinding process.

[0034] When the adjusting ring 217 slides upward, it will squeeze the first compression spring 216. When the adjusting ring 217 changes the contact state with the first top ring 218, the first compression spring 216 will restore the adjusting ring 217 to the initial state, and at the same time, the cleaning rod 217 will restore the engagement state with the crushing net 213.

[0035] When the cleaning rod 217 and the crushing net 213 are in the engaged state, the cleaning rod 217 will block the material drop holes on the crushing net 213, so that the crushing net 213 forms an integral crushing pressing surface. When the crushing net 213 forms an integral crushing pressing surface, it can not only enhance the effect of crushing the medicine by the crushing roller 215, but also prevent the medicine from being squeezed into the material drop holes of the crushing net 213 to form a blockage during the crushing process of the medicine, further improve the initial overall crushing effect of the medicine, and prevent medicine residue.

[0036] As a preferred embodiment, the first ratchet 24 includes an outer ratchet ring and an inner ratchet ring; The outer ring of the thorns is connected to the hollow shaft 6 ; the inner ring of the thorns is coaxially connected to the rotating shaft 7 ; the rotating shaft 7 is rotatably disposed in the hollow shaft 6 and connected to the motor 8 .

[0037] It should be noted that when the motor 8 rotates in the forward direction, the inner and outer rings of the thorns are in a clamping state, so that the rotating shaft 7 transmits the rotation of the motor 8 to the hollow shaft 6. On the contrary, when the motor 8 rotates in the reverse direction, the hollow shaft 6 will not rotate.

[0038] As a preferred embodiment, the crushing assembly 22 includes: A sliding bin 224 is fixedly arranged on the inner wall of the housing 1; a fixing ring buckle 221 is slidably connected and arranged in the sliding bin 224, and a second compression spring 223 is arranged between the fixing ring buckle 221 and the sliding bin 224; A crushing net 222, fixedly arranged on the fixing ring buckle 221; The crushing roller 225 is slidably disposed on the hollow shaft 6 and connected to one end of a third compression spring 226 , and the other end of the third compression spring 226 is connected to the hollow shaft 6 .

[0039] When the hollow shaft 6 rotates, the crushing roller 225 performs a secondary grinding operation on the medicine that falls onto the crushing net 222 after the primary crushing.

[0040] As a preferred embodiment, a second top ring is fixedly provided on the crushing net 222 , the second top ring abuts against a third top ring, and the third top ring is fixedly provided on the hollow shaft 6 .

[0041] When the secondary grinding operation is performed, the third top ring rotates along with the coaxial shaft 6 , and intermittently changes the contact state with the second top ring, so that the crushing net 222 slides on the coaxial shaft 6 intermittently.

[0042] When the crushing net 222 slides upward, the fixed ring buckle 221 slides upward synchronously and squeezes the second compression spring 223, while the crushing roller 225 slides upward and squeezes the third compression spring 226. In the process of the crushing roller 225 sliding upward and squeezing the third compression spring 226, the contact pressure between the crushing roller 225 and the crushing net 222 will be changed, thereby intermittently increasing the grinding force and improving the grinding effect on the medicine.

[0043] After the crushing net 222 slides upward to the highest point, the third top ring continues to rotate and suddenly changes the contact state with the second top ring, that is, the crushing net 222 will drop directly from the highest point to the lowest point. In this process, the second compression spring 223 and the third compression spring 226 will quickly make the crushing net 222 fall, thereby causing the crushing net 222 to vibrate. Under this vibration, the powder of the medicine ground into blocks can be effectively shaken off to prevent it from sticking into blocks. At the same time, under this vibration, the falling of the medicine after grinding is improved to prevent accumulation on the crushing net 222, thereby ensuring the sustainability of the grinding effect.

[0044] As a preferred embodiment, the drug delivery component 3 includes: a drug delivery tube 31, a spiral rod 32, and a second ratchet 33; One end of the drug delivery tube 31 is fixedly arranged on the housing 1, and the spiral rod 32 is rotatably arranged in the drug delivery tube 31, and one end of the spiral rod 32 is connected to the rotating shaft 7 through the second ratchet 33; The other end of the drug delivery tube 31 is connected to the drug delivery control head 4 by thread disassembly.

[0045] It should be explained that after all the medicines are ground, the motor 8 is started and rotated in reverse. Under the action of the second ratchet 33, the spiral rod 32 will rotate accordingly. During the rotation, the spiral rod 32 will transport the medicine powder collected in the conical collection barrel 23 to the dosing control head 4.

[0046] As a preferred embodiment, the second ratchet 33 and the first ratchet 24 rotate and lock in opposite directions.

[0047] The second ratchet 33 includes an outer ratchet ring and an inner ratchet ring; The outer ratchet ring is connected to the spiral rod 32 ; the inner ratchet ring is connected to the rotating shaft 7 .

[0048] It should be noted that when the motor 8 rotates in the reverse direction, the inner ratchet ring and the outer ratchet ring are in a meshing and abutting state, so that the rotation of the rotating shaft 7 is transmitted to the outer ratchet ring, that is, the spiral rod 32 rotates.

[0049] On the contrary, when the motor 8 rotates in the forward direction, the screw rod 32 does not rotate.

[0050] As a preferred embodiment, it also includes a control knob 5, which is arranged on the housing 1 and connected to the motor 8 by a wire. The rotation direction of the motor 8 is controlled and adjusted by the control knob 5.

[0051] In specific implementation, the medicine is put into the housing 1 through the feed port 25, the motor 8 is started to rotate in the forward direction, and the crushing assembly 21 is driven by the first ratchet 24 to perform the first crushing process on the medicine to reduce the volume of the medicine. In the process of crushing the medicine, the crushing assembly 21 can prevent the medicine from being stuck in the drop hole, thereby ensuring that the medicine can smoothly fall into the grinding assembly 22, thereby enhancing the effect and efficiency of crushing the medicine.

[0052] When the medicine is crushed to a set size, the medicine falls onto the crushing assembly 22 for secondary crushing. The crushing assembly 22 rotates synchronously with the crushing assembly 21, so that the medicine falling thereon can be ground at will. At the same time, the crushing assembly 22 will produce intermittent shaking during the crushing process. The intermittent shaking can make the powdered medicine stick together. At the same time, the intermittent shaking can also increase the falling of the powdered medicine into the conical collection barrel 23, avoiding the accumulation of medicine powder after the secondary grinding, and reducing the continuous grinding effect of the grinding assembly 22.

[0053] After the secondary grinding, the medicine becomes powder and falls into the conical collecting barrel 23. After all the medicines are ground, the motor 8 is adjusted to rotate in reverse. Under the action of the first ratchet 24, the grinding assembly 22 and the crushing assembly 21 stop running, and the delivery and dosing assembly 3 starts to run, and the medicine in the conical collecting barrel 23 is delivered to the dosing control head 4. The medicine squeezes the dosing control head 4, and the dosing control head 4 opens under the squeezing action, that is, the medicine is discharged evenly.

[0054] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A medical auxiliary drug delivery device, characterized in that: include: A housing (1), a multi-stage grinding mechanism (2), a drug delivery component (3), and a drug delivery control head (4); The multi-stage grinding mechanism (2) is installed in the housing (1), and the multi-stage grinding mechanism (2) is used to grind medicines; The drug delivery component (3) is fixedly mounted on one end of the housing (1) and is used to deliver the drug ground by the multi-stage grinding mechanism (2) to the drug delivery control head (4); the drug delivery control head (4) is detachably mounted on the drug delivery component (3) via threads; A motor (8) is fixedly arranged in the housing (1); the motor (8) is used to drive and switch the working states of the delivery and dosing component (3) and the multi-stage grinding mechanism (2) by changing the rotation direction; The multi-stage grinding mechanism (2) comprises a crushing assembly (21), wherein the crushing assembly (21) is fixedly arranged in the housing (1) and connected to the motor (8) via a first ratchet (24); A crushing component (22) is disposed in the housing (1) and is used for secondary grinding of the medicine crushed by the crushing component (21); A conical collecting bucket (23) fixedly mounted on the housing (1) and used to receive and collect the medicine after secondary grinding by the grinding assembly (22); A medicine inlet (25) is formed through the shell (1).

2. A medical auxiliary drug delivery device according to claim 1, characterized in that: The crushing assembly (21) comprises: a fixed ring frame (211), the fixed ring frame (211) being fixedly arranged in the housing (1), and a crushing net (213) being fixedly arranged on the fixed ring frame (211); A plurality of limiting guide grooves (212) are evenly and fixedly arranged on the fixed ring frame (211) around the circumference; one end of a cleaning rod (214) is slidably arranged in the limiting guide groove (212) via a slider (2110); the other end of the cleaning rod (214) is rotatably connected to one end of a connecting rod (219); the other end of the connecting rod (219) is rotatably arranged on an adjusting ring (217); and the adjusting ring (217) is slidably arranged on the hollow shaft (6); The crushing roller (215) is coaxially fixedly arranged on the hollow shaft (6); a first compression spring (216) is sleeved between the crushing roller (215) and the adjustment ring (217) via the hollow shaft (6).

3. A medical auxiliary drug delivery device according to claim 2, characterized in that: A first top ring (218) is coaxially fixedly arranged on the hollow shaft (6), and the first top ring (218) abuts against the adjustment ring (217).

4. A medical auxiliary drug delivery device according to claim 2, characterized in that: The first ratchet (24) comprises an outer ratchet ring and an inner ratchet ring; The outer spindle ring is connected to the hollow shaft (6); the inner spindle ring is coaxially connected to the rotating shaft (7); the rotating shaft (7) is rotatably disposed in the hollow shaft (6) and is connected to the motor (8).

5. A medical auxiliary drug delivery device according to claim 2, characterized in that: The crushing assembly (22) comprises: A sliding bin (224) is fixedly arranged on the inner wall of the housing (1); a fixing ring buckle (221) is slidably connected and arranged in the sliding bin (224); a second compression spring (223) is arranged between the fixing ring buckle (221) and the sliding bin (224); A crushing net (222) fixedly arranged on the fixing ring buckle (221); The crushing roller (225) is slidably disposed on the hollow shaft (6) and is connected to one end of a third compression spring (226); the other end of the third compression spring (226) is connected to the hollow shaft (6).

6. A medical auxiliary drug delivery device according to claim 5, characterized in that: A second top ring is fixedly arranged on the crushing net (222), the second top ring abuts against a third top ring, and the third top ring is fixedly arranged on the hollow shaft (6).

7. A medical auxiliary drug delivery device according to claim 4, characterized in that: The drug delivery assembly (3) comprises: a drug delivery tube (31), a spiral rod (32), and a second ratchet wheel (33); One end of the drug delivery tube (31) is fixedly arranged on the housing (1), the spiral rod (32) is rotatably arranged in the drug delivery tube (31), and one end of the spiral rod (32) is connected to the rotating shaft (7) via the second ratchet (33); The other end of the drug delivery tube (31) is connected to the drug delivery control head (4) by threaded disassembly.

8. A medical auxiliary drug delivery device according to claim 7, characterized in that: The second ratchet (33) rotates in a locking direction opposite to that of the first ratchet (24).

9. The medical auxiliary drug delivery device according to claim 7, characterized in that: The second ratchet (33) comprises an outer ratchet ring and an inner ratchet ring; The outer ratchet ring is connected to the spiral rod (32); and the inner ratchet ring is connected to the rotating shaft (7).

10. The medical auxiliary drug delivery device according to claim 1, characterized in that: It also includes a control knob (5), which is arranged on the housing (1) and is connected to the motor (8) via a wire.

Images