CN216094419U

CN216094419U - Drug eluting bracket mounting driving mechanism and drug coating preparation equipment

Info

Publication number: CN216094419U
Application number: CN202122435410.7U
Authority: CN
Inventors: 孙成; 柳乐红
Original assignee: Siansonic Technology Co ltd
Current assignee: Siansonic Technology Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-03-22
Anticipated expiration: 2031-10-09

Abstract

The utility model provides a drug eluting stent mounting and driving mechanism and drug coating preparation equipment, wherein the drug eluting stent mounting and driving mechanism comprises a first driving component and a second driving component, the first driving component comprises a base, a first driving piece connected with the base and a transmission shaft rotationally connected with the first driving piece, and the transmission shaft is used for mounting a drug eluting stent; the second driving assembly comprises a second driving piece and a sliding table, the sliding table is connected with the base, and the second driving piece is suitable for driving the base to slide along the length direction of the sliding table. In this way, adopt first driving motor respectively to make the transmission shaft rotatory, second driving motor drives the transmission shaft and rotates in-process reciprocating motion, and first driving piece and second driving piece operate respectively, and the operation of second driving piece can not influence the axiality of transmission shaft, so can improve even spraying effect.

Description

Drug eluting bracket mounting driving mechanism and drug coating preparation equipment

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a drug eluting stent installation driving mechanism and drug coating preparation equipment.

Background

In recent years, a variety of interventional or implantable medical devices loaded with drug coatings have been developed to address the various causes of intravascular restenosis. The surface of the main devices such as a drug balloon and a drug eluting stent is uniformly coated with a polymer, a drug coating with a therapeutic effect is additionally arranged on the polymer coating, and after the balloon or the stent with the drug coating enters a blood vessel, the drug is gradually and slowly released, so that the aims of treating and preventing restenosis in the blood vessel are fulfilled.

Among the key factors that affect the effectiveness of drug stents are: the adhesion of the drug coating and the crystalline form of the drug. When preparing a drug eluting stent, different coating preparation technologies and processes have great influence on the adhesion of the coating and the drug crystal form. At present, the main preparation methods comprise a dipping method, a microinjection method and a spraying method, in particular to an ultrasonic spraying method utilizing an ultrasonic spraying technology as a coating preparation method of a drug eluting stent, which is considered to be the most effective preparation method of the drug coating of the interventional or implantable medical device at present.

The existing equipment has poor uniformity of spraying the bracket, thereby influencing the adhesive force of the drug coating.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a drug eluting stent installation driving mechanism and drug coating preparation equipment, which are used for solving the technical problem of poor stent spraying uniformity in the prior art.

The embodiment of the utility model provides a drug eluting bracket mounting and driving mechanism, which comprises: the first driving assembly comprises a base, a first driving piece connected with the base and a transmission shaft rotationally connected with the first driving piece, and the transmission shaft is used for installing a drug eluting bracket;

and the second driving assembly comprises a second driving piece and a sliding table, the sliding table is connected with the base, and the second driving piece is suitable for driving the base to slide along the length direction of the sliding table.

According to the drug eluting stent mounting and driving mechanism provided by the embodiment of the utility model, the length extension direction of the sliding table is consistent with the axial direction of the transmission shaft.

According to an embodiment of the drug eluting stent mounting driving mechanism of the present invention, the first driving assembly further comprises a plurality of bearings with seats, the bearings with seats are connected with the base, and the bearings with seats are arranged at intervals along the axial direction of the transmission shaft.

According to the drug eluting bracket mounting and driving mechanism provided by the embodiment of the utility model, the side of the base, which faces the second driving piece, is provided with the first sliding piece, and the side of the sliding table, which faces the base, is provided with the second sliding piece which is in sliding fit with the first sliding piece.

According to the drug eluting stent mounting driving mechanism of one embodiment of the present invention, one of the first sliding member and the second sliding member is a sliding groove, and the other one is a sliding block matched with the sliding groove.

According to the drug eluting bracket mounting and driving mechanism provided by the embodiment of the utility model, a mounting block is further arranged on one side, facing the sliding table, of the base;

the output shaft one end of second drive assembly still is equipped with the telescopic link, the telescopic link with the installation piece is connected, second drive assembly is suitable for through the telescopic link drive the installation piece is in order to drive the base is followed slide in the length direction of slip table.

According to the drug eluting stent mounting and driving mechanism provided by the embodiment of the utility model, the first driving part is a driving motor, and the second driving part is an air cylinder.

According to the drug eluting bracket mounting driving mechanism provided by the embodiment of the utility model, the output shaft of the second driving piece is connected with the transmission screw rod, and the base is in sliding connection with the transmission screw rod;

the second driving piece drives the base and the sliding table to slide relatively through the transmission screw rod.

According to the drug eluting stent mounting and driving mechanism of one embodiment of the present invention, the first driving member and the second driving member are both driving motors.

The embodiment of the utility model also provides a device for preparing the drug coating, which comprises:

a frame body;

the ultrasonic sprayer is arranged on the frame body;

the drug eluting bracket is provided with a driving mechanism which is connected with the bracket body, and the drug eluting bracket arranged on the transmission shaft is suitable for moving towards or away from the ultrasonic spray head in a rotating state.

The drug eluting bracket mounting and driving mechanism provided by the embodiment of the utility model comprises a first driving assembly and a second driving assembly, wherein a transmission shaft in the first driving assembly is used for mounting a drug eluting bracket, and then the first driving member can drive the drug eluting bracket to be in a rotating state, and a second driving member in the second driving assembly is suitable for driving a base to slide along the length direction of a sliding table, so that the transmission shaft is rotated by adopting a first driving motor respectively, the transmission shaft is driven by a second driving motor to reciprocate in the rotating process, the first driving member and the second driving member operate respectively, the coaxiality of the transmission shaft cannot be influenced by the operation of the second driving member, and the uniform spraying effect can be improved. Compared with a double-motion motor which simultaneously realizes rotary motion and reciprocating motion, the double-motion motor has better integration, but poor coaxiality, and is not beneficial to the uniform spraying of the drug eluting stent.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a drug eluting stent mounting drive mechanism according to an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view of one embodiment shown in FIG. 2 at A-A;

FIG. 4 is a cross-sectional view of another embodiment shown in FIG. 2 at A-A;

FIG. 5 is a schematic view of a mating structure of the slide table and the mounting block shown in FIG. 1;

FIG. 6 is a schematic structural view of a drug coating preparing apparatus according to an embodiment of the present invention;

reference numerals:

10. a first drive assembly; 110. a base; 120. a first driving member; 130. a drive shaft; 140. a pedestal bearing; 150. a first slider; 160. mounting blocks;

20. a second drive assembly; 210. a second driving member; 220. a sliding table; 230. a second slider; 240. a telescopic rod; 250. a transmission screw rod;

30. the drug eluting bracket is provided with a driving mechanism;

40. a frame body;

50. an ultrasonic spray head.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 5, an embodiment of the present invention provides a drug eluting stent mounting and driving mechanism 30, including a first driving assembly 10 and a second driving assembly 20, wherein the first driving assembly 10 includes a base 110, a first driving member 120 connected to the base 110, and a transmission shaft 130 rotatably connected to the first driving member 120, and the transmission shaft 130 is used for mounting a drug eluting stent; the second driving assembly 20 includes a second driving member 210 and a sliding table 220, the sliding table 220 is connected to the base 110, and the second driving member 210 is adapted to drive the base 110 to slide along the length direction of the sliding table 220.

It should be noted that the drive shaft 130 is used for mounting the drug eluting stent, and the first driving member 120 can drive the drive shaft 130 to rotate, so as to drive the drug eluting stent to rotate along the axis of the drive shaft 130. The second driving member 210 is used for driving the base 110 to slide along the length direction of the sliding table 220. Thereby allowing second drive member 210 to quickly deliver the drug eluting stent to the spray site.

In some embodiments of the present invention, the length of the sliding table 220 extends in the same direction as the axial direction of the transmission shaft 130. The second driving member 210 can move along the axial direction of the transmission shaft 130, and the second driving member 210 can convey the first driving assembly 10 to the spraying position and can quickly return to the initial position after the spraying is completed, so as to improve the spraying efficiency of the plurality of drug eluting stents.

To improve the rotational coaxiality of the transmission shaft 130, in some embodiments of the present invention, the first driving assembly 10 further includes a plurality of bearings 140 with bearings 140 connected to the base 110, the bearings 140 being spaced apart along the axial direction of the transmission shaft 130. Alternatively, the number of the mounted bearings 140 is two, and one end of the two mounted bearings 140 is connected to the base 110, and the other end is mounted to the transmission shaft 130. The first driving member 120 is further provided with a coupler on one side of the output shaft, the coaxiality is controlled by the transmission shaft 130 and the bearing with seat 140, the bearing with seat 140 has high coaxiality, and the bearing with seat 140 and the transmission shaft 130 are assembled in an interference fit manner, so that extra precision loss generated at the installation position of the bearing with seat 140 can be avoided. The two bearings 140 with seats are arranged at intervals, so that the axial movement of the transmission shaft 130 is limited, and the coaxiality is further improved. The transmission shaft 130 is precisely machined, and the coaxiality is plus or minus 0.02 mm. The first driving member 120 is connected to the second driving assembly 20 through the base 110, and the base 110 does not generate precision loss.

Referring to fig. 1 and 5, a first sliding member 150 is disposed on a side of the base 110 facing the second driving member 210, and a second sliding member 230 slidably engaged with the first sliding member 150 is disposed on a side of the sliding table 220 facing the base 110. Optionally, one of the first sliding member 150 and the second sliding member 230 is a sliding groove, and the other is a sliding block adapted to the sliding groove, the number of the sliding grooves and the number of the sliding grooves are in one-to-one correspondence, and the number of the sliding grooves are not limited to one, and may be two, three, four, etc., respectively, and is not limited herein. In some embodiments of the present invention, a sliding block is disposed at the bottom of the base 110, and a sliding groove adapted to the sliding block is disposed at the top of the sliding table 220. In other embodiments of the present invention, a sliding groove may also be disposed at the bottom of the base 110, and a sliding block adapted to the sliding groove is disposed at the top of the sliding table 220, which is not limited herein.

Referring to fig. 2 and fig. 3, in some embodiments of the present invention, a mounting block 160 is further disposed on a side of the base 110 facing the sliding table 220; one end of the output shaft of the second driving assembly 20 is further provided with a telescopic rod 240, the telescopic rod 240 is connected with the mounting block 160, and the second driving assembly 20 is adapted to drive the mounting block 160 through the telescopic rod 240 to drive the base 110 to slide along the length direction of the sliding table 220. It should be noted that the second driving element 210 can be, but not limited to, an air cylinder, the air cylinder pushes the telescopic rod 240 to further push the mounting block 160 to move, and the movement of the mounting block 160 drives the base 110 to slide relative to the sliding table 220, that is, the first sliding element 150 disposed on the base 110 slides relative to the second sliding element 230 disposed on the sliding table 220. Optionally, the first slider 150 is a driving motor adapted to drive the transmission shaft 130 to rotate.

Referring to fig. 2 and 4, in still other embodiments of the present invention, the output shaft of the second driving member 210 is connected to a transmission screw 250, and the base 110 is slidably connected to the transmission screw 250; the second driving member 210 drives the base 110 and the sliding table 220 to slide relatively through the driving screw 250. It should be noted that the second driving component 210 may be a driving motor, and the driving motor drives the transmission screw rod 250 to rotate, so as to drive the base 110 mounted on the transmission screw rod 250 to move along the axial direction of the transmission screw rod 250, and in particular, for the structure of the transmission screw rod 250, which is provided in the conventional technology of those skilled in the art, redundant description is not repeated here.

Referring to fig. 6, the present invention further provides a drug coating preparation apparatus, which includes a frame 40, an ultrasonic nozzle 50 mounted on the frame 40, and the drug eluting stent mounting and driving mechanism 30, wherein the drug eluting stent mounting and driving mechanism 30 is connected to the frame 40. That is, the bottom of the drug eluting stent installing and driving mechanism 30 is further provided with a bottom plate 310 connected with the frame body 40, and the bottom plate 310 and the frame body 40 can be fixedly connected by welding or bolts, which is not limited herein. The axis of the drive shaft 130 extends towards the ultrasonic spray head 50, i.e. the drug eluting stent mounted on the drive shaft 130 is adapted to move below the ultrasonic spray head 50 for spraying the drug.

In the actual spraying process, the second driving component 20 may be used to drive the first driving component 10 to move toward the ultrasonic nozzle 50 until the drug eluting stent is located in the region to be sprayed by the ultrasonic nozzle 50, and at this time, the first driving component 120 may drive the transmission shaft 130 to drive the drug eluting stent to rotate, so that the ultrasonic nozzle 50 may perform uniform spraying on the drug eluting stent. Compared with the existing double-motion motor, the coaxiality of the double-motion motor is plus or minus 0.2 mm, the transmission shaft 130 in the utility model is precisely machined, the coaxiality is plus or minus 0.02 mm, the sliding table 220 drives the transmission shaft 130 to linearly reciprocate under the action of the second driving piece 210, the coaxiality can reach plus or minus 0.05 mm, the coaxiality is greatly improved, and further, the medicine eluting bracket is favorably and uniformly sprayed.

In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A drug eluting stent mount drive mechanism, comprising:

the first driving assembly comprises a base, a first driving piece connected with the base and a transmission shaft rotationally connected with the first driving piece, and the transmission shaft is used for installing a drug eluting bracket;

2. The drug elution rack mounting drive mechanism of claim 1, wherein the length extension direction of the sliding table is consistent with the axial direction of the drive shaft.

3. The drug eluting stent mount drive mechanism of claim 1, wherein the first drive assembly further includes a plurality of seated bearings coupled to the base, the seated bearings being spaced apart along the axis of the drive shaft.

4. The drug elution rack mounted drive mechanism of claim 1, wherein the base has a first slide member on a side facing the second drive member, and the slide has a second slide member on a side facing the base for sliding engagement with the first slide member.

5. The drug elution rack mount drive mechanism of claim 4, wherein one of the first slide and the second slide is a slide slot and the other is a slide block that fits into the slide slot.

6. The drug eluting stent mounting and driving mechanism of claim 5, wherein a mounting block is further provided on a side of the base facing the slide table;

7. The drug eluting stent mount drive mechanism of claim 6, wherein the first drive member is a drive motor and the second drive member is a cylinder.

8. The drug eluting stent mount driving mechanism of claim 1, wherein the output shaft of the second driving member is connected with a transmission screw rod, and the base is slidably connected with the transmission screw rod;

9. The drug eluting stent mount drive mechanism of claim 8, wherein the first drive member and the second drive member are each a drive motor.

10. A drug coating preparation apparatus, comprising:

a frame body;

the ultrasonic sprayer is arranged on the frame body;

a drug eluting stent mounting and driving mechanism as claimed in any one of claims 1 to 9, connected to the frame body, the drug eluting stent mounted on the driving shaft is adapted to move towards or away from the ultrasonic nozzle in a rotating state.