CN115779241A - Drug balloon system - Google Patents
Drug balloon system Download PDFInfo
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- CN115779241A CN115779241A CN202211461619.3A CN202211461619A CN115779241A CN 115779241 A CN115779241 A CN 115779241A CN 202211461619 A CN202211461619 A CN 202211461619A CN 115779241 A CN115779241 A CN 115779241A
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- balloon
- cutting
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- drug
- inner tube
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Abstract
The invention provides a medicine balloon system, which comprises a tip, an inner tube, a balloon, a sleeve, a protection assembly and a cutting medicine storage assembly, wherein the tip is provided with a cutting hole; the distal end of the inner tube is connected with the tip end, and the interior of the inner tube is communicated with the interior of the tip end to form a guide channel for guiding the guide wire to penetrate; the balloon is sleeved on the inner tube, the far end of the balloon is fixedly connected to the inner tube, the near end of the balloon is connected with the sleeve, the sleeve is sleeved on the inner tube, and a clearance channel for liquid medium to flow into the balloon is formed between the sleeve and the inner tube; the protection component is movably sleeved on the sleeve; the cutting medicine storage component is arranged on the balloon, is used for cutting and puncturing blood vessels and is provided with a medicine storage groove; the balloon and the cutting medicine storage component are collected in the protective component by driving the protective component to move towards the direction of the tip. The drug balloon system can reduce the drug loss in the interventional process and improve the utilization rate of the drug after the wall is expanded.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a medicine balloon system.
Background
Vascular intervention is an important treatment for revascularization of stenotic lesions, and restenosis is usually caused by the proliferation of smooth muscle cells in the media.
In recent years, new devices and treatment strategies have been emerging to overcome the above problems, and drug-coated balloons, a product of the combination of traditional balloon angioplasty and advanced drug elution techniques, are increasingly showing their superiority as an effective supplement to stenting. DCB (Drug-coated Balloon, DCB) is not only simple and convenient to operate, but also has unique advantages for in-stent restenosis, bifurcation lesion, small vessel lesion, severe bending calcification lesion and the like. However, DCB still has the problems of serious loss of the drugs on the surface of the balloon in the interventional process, short contact time with the vessel wall, low drug utilization efficiency and the like.
In addition, as atherosclerosis is the pathological basis of acute cardiovascular and cerebrovascular events, the main causes of the acute cardiovascular events are local atherosclerotic plaque rupture and thrombus formation, and the formation of thrombus depends on the vulnerability of the atherosclerotic plaque, and the vulnerable plaque rupture and thrombus formation easily occur in the vulnerable plaque, so that acute coronary syndrome occurs. After the stent is placed, under the extrusion action of the saccule or the stent, on one hand, the platelets are easily activated by naked lipid in unstable plaque to form microthrombus which is adhered and gathered at the position of a diseased blood vessel to cause microcirculation obstruction; on the other hand, the thrombus is easy to be broken and fall off in the treatment process, so that thrombus fragments flow to the far end of the coronary artery, the far-end blood vessel is blocked, and the phenomenon of slow blood flow is caused. With the increase of the blockage amount, the far-end blood vessel is completely re-blocked, namely, the phenomenon of 'no reflow' occurs, and finally, the risk of congestive heart failure, malignant arrhythmia and cardiac fragmentation is increased, so that the difficulty of interventional therapy is increased, the incidence rate of cardiovascular events is increased, the curative effect of PCI is seriously influenced, and the mortality rate of AMI patients is increased.
Therefore, there is a need for a drug balloon system to reduce the drug loss during intervention and improve the utilization of the drug after wall expansion.
Disclosure of Invention
The invention aims to provide a drug balloon system to reduce drug loss in the intervention process and improve the utilization rate of drugs after wall expansion.
In order to achieve the aim, the invention provides a medicine balloon system which comprises a tip, an inner tube, a balloon, a sleeve, a protection assembly and a cutting medicine storage assembly; the distal end of the inner tube is connected with the tip, and the interior of the inner tube is communicated with the interior of the tip to form a guide channel for guiding the penetration of a guide wire; the balloon is sleeved on the inner tube, the far end of the balloon is fixedly connected to the inner tube, the near end of the balloon is connected with the sleeve, the sleeve is sleeved on the inner tube, and a gap channel for liquid medium to flow into the balloon is formed between the sleeve and the inner tube; the protection component is movably sleeved on the sleeve; the cutting medicine storage component is arranged on the balloon, is used for cutting and puncturing blood vessels and is provided with a medicine storage groove; the balloon and the cutting medicine storage component are collected inside the protective component by driving the protective component to move towards the direction of the tip.
Preferably, the medicine balloon system further comprises a Y-shaped needle seat, the proximal end of the inner tube is inserted into the straight cavity of the Y-shaped needle seat, the proximal end of the sleeve is inserted into the straight cavity of the Y-shaped needle seat, and the clearance channel is communicated with the Y-shaped cavity of the Y-shaped needle seat.
Preferably, the protection assembly includes an outer sheath tube and a Y valve assembly, the outer sheath tube is movably sleeved on the sleeve, a proximal end of the outer sheath tube is connected with a distal end of the Y valve assembly, and the Y valve assembly is sleeved on the sleeve.
Preferably, the drug balloon system further comprises a capturing net component, the capturing net component is sleeved on the sleeve and located between the balloon and the outer sheath, and the Y-valve component drives the outer sheath to move towards the tip, so as to store the capturing net component, the balloon and the cutting and drug storing component in the outer sheath.
Preferably, the drug balloon system further comprises an intermediate sheath movably sleeved on the sleeve and located between the outer sheath and the sleeve, and a distal end of the intermediate sheath is connected with the capturing net component; the position of the catching net component is adjusted by driving the middle sheath pipe to move.
Preferably, the capturing net assembly comprises a capturing net body and a capturing net fixing ring, the proximal end of the capturing net body is connected with the capturing net fixing ring, and the capturing net fixing ring is connected with the distal end of the middle sheath tube.
Preferably, the catching net body is provided with a plurality of microporous structures, and the microporous structures are used for allowing normal blood to pass through and intercepting the medicine.
Preferably, the drug balloon system further comprises an adjuster, the proximal end of the middle sheath is connected with the adjuster, and the adjuster is sleeved on the sleeve.
Preferably, the cutting and medicine storage assembly comprises a cutting wire and a restraining wire, the cutting wire is arranged on the balloon along the axial direction of the balloon, the restraining wire is wound on the balloon along the radial direction of the balloon, and the medicine storage grooves are distributed on the restraining wire.
Preferably, the plurality of cutting wires are uniformly distributed on the balloon along the radial direction of the balloon, a proximal end fixing ring connected with the proximal ends of the cutting wires is arranged at the proximal end of the balloon, and a distal end fixing ring connected with the distal ends of the cutting wires is arranged at the distal end of the balloon; the plurality of the restraint wires are equidistantly distributed on the saccule along the circumferential direction of the saccule, and the cutting wires and the restraint wires are fixedly connected together in a crossing manner.
Compared with the prior art, the medicine balloon system has the advantages that the protective component is arranged on the sleeve, and the balloon and the cutting medicine storage component are collected in the protective component by driving the protective component to move towards the tip end, so that the medicine loss of the medicine balloon system in the intervention process can be reduced, and the cutting medicine storage component is prevented from damaging normal blood vessel parts; keep away from through ordering about the protection subassembly orientation removal at most advanced, can make again originally to be collected in the inside of protection subassembly the sacculus and the medicine subassembly is stored up in the cutting breaks away from external restraint, injects liquid medium into the sacculus through clearance passageway, expands the sacculus, and the medicine in the storing groove of medicine subassembly is stored up in the cutting can release, and simultaneously, the cutting stores up the medicine subassembly and can cut and pierce pathological change position, can go deep into the vascular mesolamella of pathological change, improves the drug utilization ratio. Therefore, the drug balloon system can reduce the drug loss in the interventional process and improve the utilization rate of the drug after the wall is expanded.
Drawings
Fig. 1 is a block diagram of a drug balloon system of the present invention.
Fig. 2 is a cross-sectional view of the drug balloon system of the present invention at the location of the Y-shaped needle hub.
Fig. 3 is a block diagram of the drug balloon system of the present invention at the tip-to-sheath location.
FIG. 4 is a block diagram of the balloon and cutting reservoir assembly of the present invention.
Fig. 5 is an enlarged view of a point a in fig. 4.
Fig. 6 is a cross-sectional view of the drug balloon system of the present invention at a location to capture the mesh assembly.
Detailed Description
In order to explain the technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.
In this document, "proximal" and "distal" are relative orientations, relative positions, and relative directions of elements or actions with respect to each other from the perspective of a physician using the medical device, although "proximal" and "distal" are not limiting, the "proximal" generally refers to the end of the medical device that is closer to the physician during normal operation, and the "distal" generally refers to the end that enters the patient's body first.
Referring to fig. 1 to 5, the drug balloon system 100 of the present invention includes a tip 1, an inner tube 2, a balloon 3, a sleeve 4, a protection component 5 and a cutting and drug storage component 6; the distal end of the inner tube 2 is connected with the tip 1, and the inside of the inner tube 2 is communicated with the inside of the tip 1 and forms a guide channel 7 for guiding the penetration of a guide wire; the balloon 3 is sleeved on the inner tube 2, the far end of the balloon 3 is fixedly connected to the inner tube 2, the near end of the balloon 3 is connected with the sleeve 4, the sleeve 4 is sleeved on the inner tube 2, and a gap channel 8 for liquid medium to flow into the balloon 3 is formed between the sleeve 4 and the inner tube 2; the protective component 5 is movably sleeved on the sleeve 4; the cutting medicine storage component 6 is arranged on the balloon 3, the cutting medicine storage component 6 is used for cutting and puncturing blood vessels, and a medicine storage groove 621 is arranged on the cutting medicine storage component 6; the balloon 3 and the cutting medicine storage component 6 are collected inside the protection component 5 by driving the protection component 5 to move towards the direction of the tip 1. The tip 1 may be connected to the inner tube 2 through a UV bonding process, the proximal end of the balloon 3 is connected to the sleeve 4 through laser welding, and the distal end of the balloon 3 is connected to the inner tube 2 through laser welding, but not limited thereto.
Referring to fig. 1 and fig. 2, in the present embodiment, the drug balloon system 100 further includes a Y-shaped needle holder 9, the proximal end of the inner tube 2 is inserted into the straight cavity 91 of the Y-shaped needle holder 9, the proximal end of the cannula 4 is inserted into the straight cavity 91 of the Y-shaped needle holder 9, and the clearance channel 8 is communicated with the Y-shaped cavity 92 of the Y-shaped needle holder 9. Specifically, the depth of the inner tube 2 inserted into the straight cavity 91 of the Y-shaped needle holder 9 is deeper than the depth of the sleeve 4 inserted into the straight cavity 91 of the Y-shaped needle holder 9, and the proximal end of the sleeve 4 is located at a position close to the Y-shaped cavity 92 of the Y-shaped needle holder 9, so that the gap channel 8 is communicated with the Y-shaped cavity 92 of the Y-shaped needle holder 9, thereby facilitating the injection of the liquid medium by the doctor through the Y-shaped cavity 92 of the Y-shaped needle holder 9, and the liquid medium can flow into the balloon 3 through the gap channel 8, thereby expanding the balloon 3.
Referring to fig. 1, in the present embodiment, the protection assembly 5 includes an outer sheath 51 and a Y-valve assembly 52, the outer sheath 51 is movably sleeved on the sleeve 4, a proximal end of the outer sheath 51 is connected to a distal end of the Y-valve assembly 52, and the Y-valve assembly 52 is sleeved on the sleeve 4. The doctor can drive the outer sheath 51 to move towards the direction close to the tip 1 (i.e. the distal direction) through the Y valve component 52, so as to store the balloon 3 and the cutting and medicine storage component 6 inside the outer sheath 51, thereby reducing the medicine loss of the medicine balloon system 100 during the intervention process; the physician can actuate the outer sheath 51 away from the tip 1 (i.e., in the proximal direction) via the Y-valve assembly 52, and can also disengage the balloon 3 and the cutting and drug storage assembly 6 from the external constraint, which were previously housed within the protective assembly 5. The proximal end of the outer sheath 51 may be connected to the distal end of the Y-valve assembly 52 by a UV bonding process, but not limited thereto.
Referring to fig. 1, 3 and 6, in addition, the drug balloon system 100 of the present invention further includes a catching net assembly 10, the catching net assembly 10 is sleeved on the sleeve 4 and located between the balloon 3 and the outer sheath 51, the Y-valve assembly 52 drives the outer sheath 51 to move toward the tip 1, so as to store the catching net assembly 10, the balloon 3 and the cutting and drug storing assembly 6 in the outer sheath 51. The Y-valve assembly 52 drives the outer sheath 51 to move in a direction close to the tip 1 (i.e. in a distal direction) to store the capturing net assembly 10 in the outer sheath 51, so that the doctor can operate the drug balloon system 100 of the present invention to intervene in a lesion site of a patient; the Y-valve assembly 52 drives the outer sheath 51 to move away from the tip 1 (i.e. in the proximal direction), so that the capturing net assembly 10, which is originally housed in the outer sheath 51, is released, and the capturing net assembly 10 captures the thrombus plaque, thereby preventing the plaque generated during the operation from flowing to the normal blood vessel and simultaneously drawing out the plaque from the body.
Referring to fig. 1, the balloon system 100 further includes a middle sheath 11, the middle sheath 11 is movably sleeved on the sleeve 4 and located between the outer sheath 51 and the sleeve 4, and a distal end of the middle sheath 11 is connected to the capturing net assembly 10; the position of the catching net assembly 10 is adjusted by driving the middle sheath 11 to move. Further, the drug balloon system 100 of the present invention further includes an adjuster 12, the proximal end of the middle sheath 11 is connected to the adjuster 12, and the adjuster 12 is sleeved on the sleeve 4. The position of the capture net assembly 10 is adjusted by providing an adjuster 12 to facilitate the physician to move the middle sheath 11 via the adjuster 12.
Referring to fig. 6, in the present embodiment, the capturing net assembly 10 includes a capturing net body 101 and a capturing net fixing ring 102, the capturing net body 101 is connected at a proximal end thereof to the capturing net fixing ring 102, the capturing net fixing ring 102 is connected to a distal end of the intermediate sheath 11, and the intermediate sheath 11 is connected at a proximal end thereof to the adjustor 12. The proximal end of the capturing net body 101 may be fixed to the capturing net fixing ring 102 by a laser welding process, the distal end of the middle sheath 11 is connected to the capturing net fixing ring 102 by glue, and the proximal end of the middle sheath 11 is connected to the adjuster 12 by a UV bonding process, but not limited thereto. Further, the catching net body 101 is provided with a plurality of micro-porous structures (not shown) for allowing normal blood to pass through and intercepting the medicine. The medicine is intercepted by allowing normal blood to pass through the microporous structure on the capturing net body 101, so that the medicine concentration of the pathological change part is ensured, and the medicine utilization rate is improved.
Referring to fig. 3 to 5, in the present embodiment, the cutting and medicine storing assembly 6 includes a cutting wire 61 and a constraining wire 62, the cutting wire 61 is disposed on the balloon 3 along the axial direction of the balloon 3, the constraining wire 62 is wound on the balloon 3 along the radial direction of the balloon 3, and the medicine storing grooves 621 are distributed on the constraining wire 62. Specifically, a plurality of cutting wires 61 are uniformly distributed on the balloon 3 along the radial direction of the balloon 3, a proximal end fixing ring 31 connected with the proximal end of the cutting wires 61 is arranged at the proximal end of the balloon 3, and a distal end fixing ring 32 connected with the distal end of the cutting wires 61 is arranged at the distal end of the balloon 3; the plurality of restraining wires 62 are equidistantly distributed on the balloon 3 along the circumferential direction of the balloon 3, and the cutting wires 61 and the restraining wires 62 are fixedly connected together in a crossing manner to form a restraining cage. The intersection of the cutting wire 61 and the constraining wire 62 is connected by laser welding, the proximal end of the cutting wire 61 is connected with the proximal end fixing ring 31 by laser welding, and the distal end of the cutting wire 61 is connected with the distal end fixing ring 32 by laser welding, but not limited thereto. After the Y die cavity 92 through Y type needle seat 9 injected liquid medium, liquid medium accessible clearance passageway 8 flowed into sacculus 3 for sacculus 3 expansion, and this moment because the effect of outside cutting wire 61 and restraint silk 62, sacculus 3 can expand under the restraint condition, thereby reduce the damage to the vascular wall, and simultaneously, medicine also can release in the medicine storage tank 621, inside the vascular wall also can be pierced to cutting wire 61, improved the infiltration effect of medicine.
With reference to fig. 1 to 6, the specific working principle of the drug balloon system 100 of the present invention is as follows:
the guide wire passes through the catheter sheath group to reach the predetermined lesion of the blood vessel, and the medicine balloon system 100 of the invention passes through the guide wire to reach the predetermined lesion of the blood vessel. The outer sheath 51 is driven to move proximally by moving the Y-valve assembly 52, disengaging the balloon 3 from the external constraint while releasing the capture net assembly 10. Then, by injecting a liquid medium into the Y-cavity 92 of the Y-shaped needle holder 9, the balloon 3 is expanded, and at this time, due to the action of the external cutting wire 61 and the restraining wire 62, the balloon 3 is expanded under the restraining condition, so that the damage to the blood vessel wall is reduced. Simultaneously store up medicine also can release in the medicine groove 621, inside the cutting wire 61 also can pierce the vascular wall, improved the infiltration effect of medicine. During operation of the balloon 3 and the medicament, the capture net body 101 of the capture net assembly 10 captures plaque generated during the process at the proximal end and also intercepts the medicament flushed by blood flow. Additionally, during this process, the position of the capture net assembly 10 may also be adjusted by the adjuster 12 to better capture plaque and drugs. After the balloon 3 finishes working, the pressure of the balloon 3 is relieved through the Y-shaped needle seat 9 and the Y-shaped cavity 92. The Y-valve assembly 52 is then moved to drive the outer sheath 51 to move distally, so as to fold the capturing net assembly 10, the balloon 3 and the cutting drug storage assembly 6, so as to store the capturing net assembly 10, the balloon 3 and the cutting drug storage assembly 6 in the outer sheath 51, and then push the drug balloon system 100 out of the body.
To sum up, the medicine balloon system 100 of the present invention arranges the protection component 5 on the sleeve 4, and the protection component 5 is driven to move towards the tip 1, so as to store the balloon 3 and the cutting medicine storage component 6 inside the protection component 5, thereby reducing the medicine loss of the medicine balloon system 100 in the intervention process, and preventing the cutting medicine storage component 6 from damaging the normal blood vessel; move towards the direction of keeping away from most advanced 1 through order about protection subassembly 5, can make originally to be collected in sacculus 3 of protection subassembly 5's inside and cut again and store up medicine subassembly 6 and break away from the external restraint, pour into liquid medium into to sacculus 3 through clearance channel 8, expand sacculus 3, the medicine in the storing groove of cutting storage medicine subassembly 6 can be released, and simultaneously, cutting storage medicine subassembly 6 can cut and pierce pathological change position, can go deep into the vascular tunica intermedia of pathological change, improve the drug utilization rate. The drug balloon system 100 of the present invention also prevents plaque generated during the procedure from flowing to the normal blood vessel site by providing the catching net assembly 10 at the proximal end side of the balloon 3, while allowing the plaque to be drawn out of the body. In addition, the capturing net body 101 of the capturing net assembly 10 is further provided with a microporous structure, and the microporous structure can allow normal blood to pass through to intercept the medicine, so that the medicine concentration of a diseased part is ensured, and the medicine utilization rate is improved.
The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.
Claims (10)
1. A medicine balloon system is characterized by comprising a tip, an inner tube, a balloon, a sleeve, a protection assembly and a cutting medicine storage assembly; the distal end of the inner tube is connected with the tip, and the interior of the inner tube is communicated with the interior of the tip to form a guide channel for guiding a guide wire to penetrate; the balloon is sleeved on the inner tube, the far end of the balloon is fixedly connected to the inner tube, the near end of the balloon is connected with the sleeve, the sleeve is sleeved on the inner tube, and a gap channel for liquid medium to flow into the balloon is formed between the sleeve and the inner tube; the protection component is movably sleeved on the sleeve; the cutting medicine storage component is arranged on the balloon, is used for cutting and puncturing blood vessels and is provided with a medicine storage groove; the balloon and the cutting medicine storage component are collected inside the protective component by driving the protective component to move towards the direction of the tip.
2. The drug balloon system according to claim 1, further comprising a Y-shaped needle hub, wherein the proximal end of the inner tube is inserted into the straight cavity of the Y-shaped needle hub, the proximal end of the cannula is inserted into the straight cavity of the Y-shaped needle hub, and the clearance channel is communicated with the Y-shaped cavity of the Y-shaped needle hub.
3. The drug balloon system according to claim 1, wherein the protection assembly comprises an outer sheath and a Y-valve assembly, the outer sheath is movably sleeved on the sleeve, a proximal end of the outer sheath is connected with a distal end of the Y-valve assembly, and the Y-valve assembly is sleeved on the sleeve.
4. The drug balloon system according to claim 3, further comprising a capturing net assembly sleeved on the sleeve and located between the balloon and the outer sheath, wherein the Y-valve assembly drives the outer sheath to move toward the tip so as to store the capturing net assembly, the balloon and the cutting and drug storing assembly in the outer sheath.
5. The drug balloon system according to claim 4, further comprising an intermediate sheath movably disposed over the sleeve between the outer sheath and the sleeve, a distal end of the intermediate sheath being connected to the capturing net assembly; the position of the catching net component is adjusted by driving the middle sheath pipe to move.
6. The drug balloon system of claim 5, wherein the capture net assembly comprises a capture net body and a capture net retainer ring, the capture net body having a proximal end connected to the capture net retainer ring, the capture net retainer ring connected to the distal end of the intermediate sheath.
7. The drug balloon system according to claim 6, wherein the capturing net body is provided with a plurality of micro-porous structures, and the micro-porous structures are used for allowing normal blood to pass through and intercepting drugs.
8. The drug balloon system according to claim 5, further comprising an adjuster, the proximal end of the intermediate sheath being connected to the adjuster, and the adjuster being sleeved on the sleeve.
9. The drug balloon system according to claim 1, wherein the cutting and drug storage assembly comprises a cutting wire and a restraining wire, the cutting wire is arranged on the balloon along an axial direction of the balloon, the restraining wire is wound on the balloon along a radial direction of the balloon, and the drug storage grooves are distributed on the restraining wire.
10. The drug balloon system according to claim 9, wherein a plurality of the cutting wires are uniformly distributed on the balloon along a radial direction of the balloon, and a proximal end of the balloon is provided with a proximal end fixing ring connected with a proximal end of the cutting wire, and a distal end of the balloon is provided with a distal end fixing ring connected with a distal end of the cutting wire; the plurality of constraining wires are equidistantly distributed on the balloon along the circumferential direction of the balloon, and the cutting wires and the constraining wires are fixedly connected together in a crossing manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211461619.3A CN115779241B (en) | 2022-11-17 | 2022-11-17 | Drug balloon system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211461619.3A CN115779241B (en) | 2022-11-17 | 2022-11-17 | Drug balloon system |
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| CN115779241A true CN115779241A (en) | 2023-03-14 |
| CN115779241B CN115779241B (en) | 2024-01-19 |
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| CN202211461619.3A Active CN115779241B (en) | 2022-11-17 | 2022-11-17 | Drug balloon system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116271456A (en) * | 2023-05-23 | 2023-06-23 | 杭州瑞维特医疗科技有限公司 | Medicine sacculus pipe subassembly |
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| JP2016178969A (en) * | 2015-03-23 | 2016-10-13 | テルモ株式会社 | Protective cover and manufacturing method of medical device set |
| CN113116470A (en) * | 2019-12-30 | 2021-07-16 | 先健科技(深圳)有限公司 | Cutting balloon catheter and cutting balloon catheter system |
| CN113081185A (en) * | 2021-04-08 | 2021-07-09 | 哈尔滨医科大学 | Thrombus cutting system |
| CN114010917A (en) * | 2021-11-05 | 2022-02-08 | 广东博迈医疗科技股份有限公司 | Double-medicine administration balloon |
| CN114796810A (en) * | 2022-04-12 | 2022-07-29 | 四川大学华西医院 | Cutting sacculus pipe of medicine carrying |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116271456A (en) * | 2023-05-23 | 2023-06-23 | 杭州瑞维特医疗科技有限公司 | Medicine sacculus pipe subassembly |
| CN116271456B (en) * | 2023-05-23 | 2023-08-11 | 杭州瑞维特医疗科技有限公司 | Medicine sacculus pipe subassembly |
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