CN111419470A

CN111419470A - Support laminating machine

Info

Publication number: CN111419470A
Application number: CN202010188911.7A
Authority: CN
Inventors: 周玉杰; 徐英恺
Original assignee: Beijing Anzhen Hospital
Current assignee: Beijing Anzhen Hospital
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-07-17
Anticipated expiration: 2040-03-17
Also published as: CN111419470B

Abstract

The invention discloses a stent laminating machine which comprises a laminating film, a stent fixing unit, a laminating film fixing unit and a control unit, wherein the stent fixing unit is used for fixing a stent which is not laminated with the laminating film, the laminating film fixing unit is used for fixing the laminating film, and the stent fixing unit and the laminating film fixing unit are respectively connected with the control unit; the control unit is used for sticking the covering film to the non-covered stent by controlling the relative movement of the stent fixing unit and the covering film fixing unit; wherein the covering film is a medical film with elasticity. The stent laminating machine provided by the invention can realize the laminating of the non-laminated stent by adopting a machine by arranging the stent fixing unit, the laminating fixing unit and the control unit, thereby realizing the rapid and accurate stent laminating operation in the operation.

Description

Support laminating machine

Technical Field

The invention belongs to the technical field of medical equipment, and particularly relates to a stent film laminating machine.

Background

Coronary intervention is currently a common means used clinically to treat some cardiovascular diseases. During the operation, emergency situations such as rupture or perforation of blood vessels are sometimes encountered. Coronary perforation is a rare but very dangerous complication of percutaneous coronary interventions and can lead to an increased incidence of pericardial tamponade and even death of the patient. Stenting of stents is generally effective in controlling coronary bleeding, preventing or reducing the incidence of cardiac tamponade, and reducing mortality.

However, because of the high price of the stent graft and the various sizes of blood vessels, most catheter rooms cannot timely acquire the stent graft with a specific size. Therefore, some self-made covered stents are clinically used for emergency treatment of coronary perforation, for example, an infusion patch can be wound around a common stent. However, the self-made covered stent has higher requirements on the clinical experience and the surgical skill of an operator. Therefore, for general operators, the homemade coating operation is difficult, the production time is long, and the homemade coating size is inaccurate.

The invention provides a stent laminating machine, aiming at solving the technical problem of a self-made stent laminating clinically.

Disclosure of Invention

The invention discloses a stent laminating machine which comprises a laminating film, a stent fixing unit, a laminating film fixing unit and a control unit, wherein the stent fixing unit is used for fixing a stent which is not laminated with the laminating film, the laminating film fixing unit is used for fixing the laminating film, and the stent fixing unit and the laminating film fixing unit are respectively connected with the control unit; the control unit is used for sticking the covering membrane to the non-covered stent by controlling the relative movement of the stent fixing unit and the covering membrane fixing unit; wherein the covering film is a medical film with elasticity.

Further, the surface of the tectorial membrane adhered to the non-tectorial membrane stent has adhesiveness, and the tectorial membrane is adhered to the outer surface of the non-tectorial membrane stent through the surface with the adhesiveness. In the arrangement, the surface of the covered membrane adhered to the non-covered membrane stent has viscosity, so that the obtained covered membrane stent has better stability and the falling-off of the covered membrane is avoided.

Further, the film covering fixing unit comprises a roller, a first connecting plate and a first driving mechanism which are connected with each other, and the bracket fixing unit comprises a clamping assembly and a second driving mechanism which are connected with each other; the covering film is a sheet-shaped film, the covering film is wound on the roller, and the side, with the viscosity, of the covering film is arranged to face away from the roller; the non-covered stent is a cylindrical non-covered stent, and the clamping assembly fixes the non-covered stent through two end parts of the non-covered stent; the control unit is respectively connected with and controls the film covering fixing unit and the bracket fixing unit through the first driving mechanism and the second driving mechanism; the first driving mechanism drives the roller to rotate and drives the roller to be close to or far away from the non-covered stent fixed by the clamping assembly, and the second driving mechanism drives the clamping assembly to drive the non-covered stent to rotate around the axial direction; when the roller is close to the clamping assembly, the free end of the film wound on the roller is stuck to the non-film-covered stent, the roller and the non-film-covered stent synchronously rotate in the opposite direction, and the film is wound on the non-film-covered stent. In the arrangement, the film is fixed in the form of a film winding roller, so that the structure is simple and the operation is convenient.

Further, the film cutting device further comprises a cutting unit for cutting the film after the film is cut. In this arrangement, in which the cutting unit is provided, it is ensured that the coating film can be easily cut after the winding of the coating film is completed, thereby further improving the efficiency.

Further, the film covering fixing unit comprises a holding piece, a second connecting plate and a third driving mechanism which are connected with each other, and the support fixing unit comprises a clamping assembly and a second driving mechanism which are connected with each other; the film is a cylindrical film with openings at two ends, and the inner side surface of the cylindrical film is a sticky surface of the film; the covering film is placed in the holding piece; the non-covered stent is a cylindrical non-covered stent, and the clamping assembly fixes the non-covered stent through two end parts of the non-covered stent; the control unit is respectively connected with and controls the film covering fixing unit and the bracket fixing unit through the third driving mechanism and the second driving mechanism; the third driving mechanism drives the holding piece to be close to or far away from the non-film-coated support and drives the holding piece to clamp or loosen the non-film-coated support, and the second driving mechanism drives the clamping assembly to drive the non-film-coated support to rotate around the axial direction; when the tectorial membrane cover is in the non-tectorial membrane support outside and press from both sides tightly the non-tectorial membrane support, set up in the tectorial membrane of holding in the piece is pasted on the non-tectorial membrane support, when the piece of holding presss from both sides tightly the non-tectorial membrane support does not rotate. In the arrangement, the holding piece is used for fixing the covering film, the covering film in the arrangement is a cylindrical film with two open ends, the structure is simple, the covering film is extruded to the stent without the covering film through the holding piece, and the covering film is of an integral structure, so that the stability of the covering film is good, and the covering film is not easy to fall off.

Further, the holding piece comprises an air bag with a cylindrical hollow, and the coating is placed in the cylindrical hollow of the air bag; the third driving mechanism comprises a clamping driving unit and a moving driving unit; the clamping driving unit is connected with the air bag and is used for driving the air bag to inflate and deflate; the mobile driving unit is used for driving the holding piece to be close to or far away from the non-covered stent. In the arrangement, the holding piece comprises a cylindrical hollow air bag structure, the air bag structure is used for holding the covering film, the covering film is pressed to the non-covered stent in the process of inflating the air bag, the structure is uniformly pressurized, and the obtained covering film can be uniformly and stably adhered to the non-covered stent.

Further, the clamping assembly comprises a first clamping piece and a second clamping piece which are oppositely arranged, wherein the first clamping piece comprises a first supporting rod and a fixing piece, the fixing piece is arranged at the first end of the first supporting rod, the fixing piece is used for fixing the first end of the support without the film coating, and the second clamping piece is used for supporting the second end of the support without the film coating; the second driving mechanism is connected with the fixing piece and drives the non-covered stent to rotate through the fixing piece. In the arrangement, the clamping assembly is specifically designed, and the structure is simple and convenient to realize.

Further, the fixing piece comprises a fixing head and a fixing ring, the first end of the fixing head is detachably connected with the first end of the first supporting rod, the second end of the fixing head is of an openable circular ring structure, the second end of the fixing head is sleeved in an annular groove in the peripheral wall of the fixing ring, and the fixing ring can rotate relative to the fixing head; the first end of the non-covered stent is fixedly connected in the fixed ring, and the second driving mechanism is connected with the fixed part through the fixed ring and drives the non-covered stent to rotate through the fixed ring. In the arrangement, the fixing part comprises a fixing head and a fixing ring, and the fixing ring can rotate relative to the fixing head in the arrangement, so that the second driving mechanism drives the non-covered stent to rotate; because the first end of fixed head can be dismantled with the first end of bracing piece and be connected, the ring structure that fixed head second end is for opening to make solid fixed ring wherein can change, thereby make and conveniently change not unidimensional solid fixed ring when not tectorial membrane support to the difference, thereby guarantee the precision of tectorial membrane and widen the suitability of laminating machine.

Furthermore, the second holder includes second bracing piece and support piece, support piece set up in the first end of second bracing piece, support piece be protruding to the cylindrical boss of first holder, cylindrical boss external diameter with the internal diameter of not tectorial membrane support is the same, support piece can with not tectorial membrane support rotates together. In the arrangement, the supporting piece is arranged as the cylindrical boss, so that the support can well support the support without film coating, and the film coating operation is convenient to carry out.

Further, the cylindrical bosses are provided in plurality, and the cylindrical bosses are stacked in a direction from the second support rod toward the first clamping member and gradually reduced in diameter; the plurality of cylindrical bosses have an outer diameter that is the same as an inner diameter of a plurality of different uncoated stents. In this arrangement, a plurality of cylindrical bosses are provided so that the second clamping member can be used to support a variety of non-stent grafts of different inner diameter dimensions.

The stent laminating machine provided by the invention can realize the laminating of the non-laminated stent by adopting a machine by arranging the stent fixing unit, the laminating fixing unit and the control unit, thereby realizing the rapid and accurate stent laminating operation in the operation.

Drawings

FIG. 1 is a schematic view of the overall structure of a stent laminator according to an embodiment of the present invention;

FIG. 2 is a schematic view of an overall structure of an unfixed stent graft in a stent graft machine according to an embodiment of the present invention;

FIG. 3 is a schematic view of another angle of an unfixed stent graft in a stent graft machine according to an embodiment of the present invention;

FIG. 4 is a schematic view of an overall structure of a stent fixing unit in a stent laminator with an uncoated stent fixed thereon according to an embodiment of the present invention;

FIG. 5 is a schematic view of the overall structure of a stent fixing unit in a stent laminator according to an embodiment of the present invention;

FIG. 6 is a partially enlarged view of a first clamping member of a stent fixing unit in a stent laminator in a state of fixing an uncoated stent in an embodiment of the invention;

FIG. 7 is a partially enlarged view of a first clamping member in a stent fixing unit in a stent laminator according to an embodiment of the present invention;

FIG. 8 is a partially enlarged view of a first clamping member in a stent fixing unit in a stent laminator according to an embodiment of the present invention;

FIG. 9 is a partially enlarged view of a second clamping member of a stent fixing unit in a stent laminator in a state of fixing an uncoated stent in an embodiment of the invention;

FIG. 10 is a partially enlarged view of a second clamping member in a stent fixing unit in a stent laminator according to an embodiment of the present invention;

FIG. 11 is a schematic view of the overall structure of a stent laminator according to an embodiment of the present invention;

FIG. 12 is a schematic view of the overall structure of an unfixed stent graft in a stent laminator according to an embodiment of the present invention;

fig. 13 is a partially enlarged schematic view of fig. 12.

In the figure, 1, a coating; 2. an uncoated stent; 100. a film covering and fixing unit; 110. a roller; 120. a first connecting plate; 130. a first drive mechanism; 110', a clasp; 111', an air bag; 120', a second connecting plate; 121', a connecting block; 130', a third drive mechanism; 131' and a clamping drive unit; 132', a mobile drive unit; 200. a bracket fixing unit; 210. a clamping assembly; 211. a first support bar; 212. a fixing member; 2121. a fixed head; 2122. a fixing ring; 2123. a screw; 213. a first slide rail structure; 214. a first screw motor; 220. a second drive mechanism; 221. a second support bar; 222. a support member; 300. a control unit; 400. a cutting unit; 500. a body; 510. a base plate; 511. a second slide rail structure; 512. a second screw motor; 520. a side plate; 530. a support plate; 531. a sliding groove.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and some structures are not shown in the drawings, which can be derived by those skilled in the art from the disclosure of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Embodiment 1A stent laminating machine

Fig. 1 to 3 illustrate an overall structure of a stent coating machine in the present embodiment, where fig. 1 is a schematic diagram illustrating an overall structure of a stent coating machine in the present embodiment, the stent coating machine in the present embodiment includes a coating 1 (not shown in fig. 1 to 3), a stent fixing unit 200, a coating fixing unit 100, and a control unit 300, where the stent fixing unit 200 is used to fix an uncoated stent, the coating fixing unit 100 is used to fix the coating 1, and the stent fixing unit 200 and the coating fixing unit 100 are respectively connected to the control unit 300; the control unit 300 pastes the stent graft 1 to the non-stent graft by controlling the relative movement of the stent fixing unit 200 and the stent graft fixing unit 100; wherein the covering film 1 is a medical film with elasticity.

In the present embodiment, the elastic medical film may be made of any material that can be used as the covering film 1 of the stent in the prior art, such as a polymer synthetic material (non-degradable or degradable) and a biological material, specifically, such as a nylon film, dacron, polyester, polyurethane, polytetrafluoroethylene, expandable polytetrafluoroethylene, polycaprolactone, polyglycolic acid, polylactic acid (e.g., L type levorotatory polylactic acid), and polyhydroxybutyrate amyl ester.

Preferably, the surface of the covered membrane 1 adhered to the non-covered stent has adhesiveness, and the covered membrane 1 is adhered to the outer surface of the non-covered stent by the surface having the adhesiveness. The surface of the tectorial membrane 1 pasted to the non-tectorial membrane stent has viscosity, so that the obtained tectorial membrane 1 stent has better stability, and the tectorial membrane 1 is prevented from falling off. The adhesive side of the cover film 1 can be prepared using medical glue. Further, the surface of the coating film 1 in contact with the blood vessel may have a structure having a certain roughness, so that a drug such as thrombin can be supported, thereby promoting blood coagulation.

In the embodiment, the film fixing unit 100 comprises a roller 110, a first connecting plate 120 and a first driving mechanism 130 which are connected with each other, wherein the film 1 is a sheet-shaped film, the film 1 is wound on the roller 110, and the sticky side of the film 1 is far away from the surface of the roller 110 during the winding process; the object of the stent coating machine 1 in the present embodiment is generally a cylindrical non-coated stent (the non-coated stent shown in the figure is a schematic view, only showing the main structure of the stent, and a structure integrated with a balloon is also applicable to the existing non-coated stent), wherein the stent fixing unit 200 includes a clamping assembly 210 and a second driving mechanism 220 connected with each other, and the clamping assembly 210 fixes the non-coated stent through two ends of the non-coated stent; the control unit 300 is respectively connected with and controls the film covering fixing unit 100 and the bracket fixing unit 200 through the first driving mechanism 130 and the second driving mechanism 220; the first driving mechanism 130 drives the roller 110 to rotate and drives the roller 110 to approach or leave the non-covered stent fixed by the clamping assembly 210, and the second driving mechanism 220 drives the clamping assembly 210 to drive the non-covered stent to rotate axially; when the roller 110 is brought close to the clamping assembly 210, the free end of the stent graft 1 wound on the roller 110 is affixed to the non-stent graft, the roller 110 and the non-stent graft rotate in opposite directions in unison, and the stent graft 1 is wound onto the non-stent graft. In the arrangement, the film 1 is fixed in the form of the film 1 winding roller 110, and the structure is simple and the operation is convenient.

Further, the present embodiment further includes a cutting unit 400, and the cutting unit 400 is configured to cut the coating film 1 after the coating film 1 is completed. The cutting unit 400 may be mechanically cut, electrically heated cut, or laser cut, and those skilled in the art may select the cutting unit according to the needs, and is not particularly limited herein.

In the present embodiment, all the components are disposed in the machine body 500, the machine body 500 includes a bottom plate 510, a side plate 520 and a supporting plate 530, wherein the bottom plate 510 is disposed at the lowest side, the side plate 520 is disposed perpendicular to the bottom plate 510, the supporting plate 530 is connected with the side plate 520 and is integrally parallel to the bottom plate 510, and when in use, the bottom plate 510 is generally laid on a horizontal plane; the stent fixing unit 200 is disposed on the bottom plate 510, the stent fixing unit 100 and the cutting unit 400 are disposed on the supporting plate 530, wherein the entire stent fixing unit 100 is disposed above the stent fixing unit 200, and the control unit 300 is disposed on the bottom plate 510, the control unit 300 and each driving mechanism in this embodiment are electrically connected to control each driving structure, and such connection and control can be realized by those skilled in the art according to the specific content in the present invention, so that the specific connection between the specific control unit 300 and each driving mechanism is omitted in the figure, which does not affect the understanding of those skilled in the art, and the specific control unit 300 in this embodiment, for example, includes a programmable controller, so that the stent laminator can realize automatic or semi-automatic operation.

Preferably, the stent fixing unit 200 for fixing the non-covered stent is specifically designed in this embodiment, and the stent fixing unit 200 in this embodiment is described in detail with reference to fig. 4 to 10, in this embodiment, the stent fixing unit 200 includes a clamping assembly 210 and a second driving mechanism 220, the clamping assembly 210 includes a first clamping member and a second clamping member which are oppositely disposed, wherein the first clamping member includes a first supporting rod 211 and a fixing member 212, the fixing member 212 is disposed at a first end of the first supporting rod 211, the fixing member 212 fixes the first end of the non-covered stent, and the second clamping member is used for supporting a second end of the non-covered stent; the second driving mechanism 220 is connected with the fixing part 212 and drives the non-covered stent to rotate through the fixing part 212; wherein the second clamping member includes a second support bar 221 and a support member 222.

Specifically, the first driving mechanism 130 includes an air cylinder and a first motor, the air cylinder drives the roller 110 to move up and down through the first connecting plate 120, and the first motor drives the roller 110 to rotate; the second driving mechanism 220 is a second motor, and drives the clamping assembly 210 to drive the non-covered stent to rotate.

More specifically, the first support rod 211 and the second support rod 221 in this embodiment are both L-type structures, wherein the second support rod 221 is disposed on a first side of the first support rod 211, the second support rod 221 is slidable on the first side of the first support rod 211, the first support rod 211 is disposed on the base plate 510, the first support rod 211 and the base plate 510 are slidable relative to each other, as shown in fig. 4 and 5, in this embodiment, the first track structure 213 and the first screw motor 214 are disposed on the first side of the first support rod 211, wherein the first track structure 213 is disposed between the second support rod 211 and the first support rod 211, the screw end of the first screw motor 214 is connected to the second support rod 221, the first screw motor 214 drives the second support rod 221 to slide back and forth relative to the first support rod 211 via the first track, such an arrangement facilitates the placement of the uncoated stent removal after the stent coating 1 is completed, in addition, the second track structure and the second track structure are disposed on the base plate 510, wherein the second track structure and the second track structure are disposed adjacent to the base plate 510, wherein the cutting unit 512 is disposed adjacent to facilitate the cutting unit 512, and the cutting unit 512, wherein the cutting unit 512 is disposed adjacent to facilitate the cutting unit 512, and the cutting unit 512 is disposed adjacent to the cutting unit 512, and the cutting unit 512, wherein the cutting unit 512 is disposed adjacent to the cutting unit 512, and the cutting unit 512 is disposed adjacent to the cutting unit 512.

As a further improvement of the first clamping member, the fixing member 212 in the first clamping member comprises a fixing head 2121 and a fixing ring 2122, a first end of the fixing head 2121 is detachably connected to a first end of the first supporting rod 211, a second end of the fixing head 2121 is in an openable circular structure, a second end of the fixing head 2121 is sleeved in an annular groove of the peripheral wall of the fixing ring 2122, and the fixing ring 2122 can rotate relative to the fixing head 2121; the first end of the non-covered stent is fixedly connected to the fixing ring 2122, and the second driving mechanism 220 is connected to the fixing member 212 via the fixing ring 2122 and drives the non-covered stent to rotate via the fixing ring 2122. Wherein the second end of the fixing head 2121 is an openable ring structure so that the fixing ring 2122 can be replaced to adapt to different radial sizes. Further, the fixing member 212 further includes a locking structure, which fixes the uncoated bracket in the fixing ring 2122, and the locking structure includes a threaded through hole (not shown in the figure) provided on a side wall of the fixing ring 2122, and a screw 2123 matched with the threaded hole, through which the screw 2123 passes into the fixing ring 2122, so as to fix the uncoated bracket; the length of the screw 2123 that extends into the retaining ring 2122 can vary, and thus can be adapted for use with non-covered stents of different radial dimensions. The fixing ring 2122 can rotate relative to the fixing head 2121, so that the second driving mechanism 220 drives the non-covered stent to rotate; because the first end of the fixing head 2121 is detachably connected with the first end of the supporting rod, the second end of the fixing head 2121 is of an openable circular ring structure, so that the fixing ring 2122 can be replaced, the fixing rings 2122 with different sizes can be conveniently replaced when different non-covered stents are used, and the precision of the covering film 1 is ensured, and the applicability of the covering film 1 machine is widened.

The second clamping member in this embodiment includes a second supporting rod 221 and a supporting member 222, the supporting member 222 is disposed at a first end of the second supporting rod 221, the supporting member 222 is a cylindrical boss protruding toward the first clamping member, an outer diameter of the cylindrical boss is the same as an inner diameter of the non-stent graft, and the supporting member 222 can rotate together with the non-stent graft. Wherein support piece 222 sets up to cylindrical boss, can play fine supporting role to the support that does not tectorial membrane, is convenient for going on of tectorial membrane 1 operation.

Preferably, there are a plurality of cylindrical bosses, which are stacked in a direction from the second support bar 221 toward the first clamping member and gradually reduced in diameter; the outer diameter of the plurality of cylindrical bosses is the same as the inner diameter of the plurality of different uncoated stents. In this arrangement, a plurality of cylindrical bosses are provided so that the second clamping member can be used to support a variety of non-stent grafts of different inner diameter dimensions.

In the present embodiment, the stent without a coating is merely illustrated as the stent structure, the stent which is commonly used in clinic at present is attached to a catheter provided with a balloon, and in the present embodiment, only through holes allowing the catheter to pass through need to be formed on the first clamping piece and the second clamping piece. For example, the cylindrical boss as the support 222 is a hollow structure in the axial direction.

Embodiment 2 a support laminating machine

Fig. 11 to 13 illustrate a specific structure of the stent laminator in this embodiment, and as shown in fig. 11 to 13, the stent laminator in this embodiment includes a stent 1, a stent fixing unit 200, a stent fixing unit 100, and a control unit 300, where the stent fixing unit 200 is used to fix an un-covered stent, the stent fixing unit 100 is used to fix a covered stent, and the stent fixing unit 200 and the covered stent fixing unit 100 are respectively connected to the control unit 300; the control unit 300 pastes the stent graft 1 to the non-stent graft by controlling the relative movement of the stent fixing unit 200 and the stent graft fixing unit 100; wherein the covering film 1 is a medical film with elasticity.

The stent laminator in this embodiment is different from the stent laminator in embodiment 1 in that the stent fixing unit 100 therein is different and the specific structure of the stent 1 therein is different, and the other parts are substantially the same as those in embodiment 1. The details of the film fixing unit 100 will be mainly described below.

In the present embodiment, the coating film 1 is a cylindrical film with two open ends, so that the cutting operation of the coating film 1 is not required, and the inner side surface of the cylindrical film of the coating film 1 in the present embodiment is a surface with viscosity of the coating film 1; the film covering fixing unit 100 comprises a clasping piece 110 ', a second connecting plate 120 ' and a third driving mechanism 130 ' which are connected with each other, and the bracket fixing unit 200 comprises a clamping assembly 210 and a second driving mechanism 220 which are connected with each other; the covering film 1 is placed in the holding piece 110'; the non-covered stent is a cylindrical non-covered stent, and the clamping assembly 210 fixes the non-covered stent through two end parts of the non-covered stent; the control unit 300 is respectively connected with and controls the film covering fixing unit 100 and the bracket fixing unit 200 through a third driving mechanism 130' and a second driving mechanism 220; the third driving mechanism 130 ' drives the clasping member 110 ' to approach or depart from the non-covered stent and drives the clasping member 110 ' to clamp or loosen the non-covered stent, and the second driving mechanism 220 drives the clamping assembly 210 to drive the non-covered stent to rotate around the axial direction; when the covering film 1 is sleeved on the outer side of the non-covered stent and clamps the non-covered stent, the covering film 1 arranged in the holding piece 110 'is pasted on the non-covered stent, and the non-covered stent does not rotate when the holding piece 110' clamps the non-covered stent. In the arrangement, the holding piece 110 'is used for fixing the coating 1, the coating 1 in the arrangement is a cylindrical film with two open ends, the structure is simple, the coating 1 is extruded to a stent without the coating through the holding piece 110', and the coating 1 is of an integrated structure, so that the stability of the coating 1 is good, and the coating 1 is not easy to fall off.

Preferably, the clasp 110 ' in the present embodiment as shown in fig. 11 to 13 comprises a balloon 111 ' having a cylindrical hollow, and the film 1 is placed in the cylindrical hollow of said balloon 111 '; the third driving mechanism 130 ' includes a grip driving unit 131 ' and a movement driving unit 132 '; wherein the clamping driving unit 131 ' is connected with the air bag 111 ' and is used for driving the inflation and deflation of the air bag 111 '; the mobile driving unit 132 'is used for driving the clasping piece 110' to approach or move away from the non-covered stent. In this arrangement, the clasping member 110 'comprises a hollow cylindrical balloon 111', the balloon 111 'is used to clasp the stent graft 1, and the balloon 111' is inflated to press the stent graft 1 against the stent graft, so that the pressure is more uniform, and the resulting stent graft 1 can be uniformly and stably adhered to the stent graft.

Preferably, the outer surface of the airbag 111 'is a hard shell, the wall of the hollow structure is a deformable structure, and when the airbag 111' is inflated, the inner part is deformed but the outer part is not deformed; thereby controlling the force applied to the inside by the gas in the air bag 111 ', and the connection and fixation of the second connection plate 120' are facilitated by the external hard structure.

In the present embodiment, a body 500 is also provided, and all components are provided in the body 500. The machine body 500 in this embodiment has a structure similar to that of the machine body 500 in embodiment 1, and includes a bottom plate 510, a side plate 520 and a supporting plate 530, wherein the bottom plate 510 is disposed at the lowest side, the side plate 520 is disposed perpendicular to the bottom plate 510, the supporting plate 530 is connected with the side plate 520 and is integrally parallel to the bottom plate 510, and the bottom plate 510 is generally laid on a horizontal plane when in use; the stent fixing unit 200 is disposed on the bottom plate 510, the membrane fixing unit 100 is disposed on the support plate 530, the membrane fixing unit 100 is entirely disposed above the stent fixing unit 200, and the control unit 300 is disposed on the bottom plate 510. In this embodiment, a sliding groove 531 penetrating through the support plate 530 is disposed on the support plate 530, the film fixing unit 100 further includes a connecting block 121 'disposed on the upper side of the support plate 530, wherein the connecting block 121' is connected to the second connecting plate 120 ', the clasping member 110' is suspended on the lower side of the support plate 530, the cylindrical film is disposed coaxially with the non-covered stent, and the moving driving unit 132 'is connected to the connecting block 121' and drives the clasping member 110 'and the cylindrical film to approach or separate from the non-covered stent along the axial direction thereof through the connecting block 121'. Preferably, the fourth driving mechanism is a screw motor.

The air bag 111 ' is only one specific embodiment of the holding member 110 ', and the holding member 110 ' in this embodiment can also use hydraulic pressure and a clamping arm to press the covered stent 1 onto the non-covered stent; the hydraulic drive has the characteristics of high precision, good stability and the like.

The respective driving mechanisms in this embodiment may be any mechanism that can achieve the motions mentioned in the present invention, and can be applied to this embodiment.

The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.

Claims

1. A stent laminating machine is characterized by comprising a laminating film, a stent fixing unit, a laminating film fixing unit and a control unit, wherein the stent fixing unit is used for fixing a stent which is not laminated with the laminating film, the laminating film fixing unit is used for fixing the laminating film, and the stent fixing unit and the laminating film fixing unit are respectively connected with the control unit; the control unit is used for sticking the covering membrane to the non-covered stent by controlling the relative movement of the stent fixing unit and the covering membrane fixing unit; wherein the covering film is a medical film with elasticity.

2. The stent laminator of claim 1, wherein the side of the cover that is adhered to the non-covered stent has adhesive properties, and the cover is adhered to the outer surface of the non-covered stent by the side having adhesive properties.

3. The stent laminator according to claim 2, wherein the cover fixing unit includes interconnected rollers, a first linkage plate and a first drive mechanism, the stent fixing unit including a connected clamp assembly and a second drive mechanism; the covering film is a sheet-shaped film, the covering film is wound on the roller, and the side, with the viscosity, of the covering film is arranged to face away from the roller; the non-covered stent is a cylindrical non-covered stent, and the clamping assembly fixes the non-covered stent through two end parts of the non-covered stent; the control unit is respectively connected with and controls the film covering fixing unit and the bracket fixing unit through the first driving mechanism and the second driving mechanism; the first driving mechanism drives the roller to rotate and drives the roller to be close to or far away from the non-covered stent fixed by the clamping assembly, and the second driving mechanism drives the clamping assembly to drive the non-covered stent to rotate around the axial direction; when the roller is close to the clamping assembly, the free end of the film wound on the roller is stuck to the non-film-covered stent, the roller and the non-film-covered stent synchronously rotate in the opposite direction, and the film is wound on the non-film-covered stent.

4. The stent laminator according to claim 3, further comprising a cutting unit for cutting the cover after the cover is completed.

5. The stent laminator according to claim 2, wherein the cover fixing unit includes a clasping member, a second connecting plate, and a third drive mechanism connected to each other, the stent fixing unit includes a clamping assembly and a second drive mechanism connected to each other; the film is a cylindrical film with openings at two ends, and the inner side surface of the cylindrical film is a sticky surface of the film; the covering film is placed in the holding piece; the non-covered stent is a cylindrical non-covered stent, and the clamping assembly fixes the non-covered stent through two end parts of the non-covered stent; the control unit is respectively connected with and controls the film covering fixing unit and the bracket fixing unit through the third driving mechanism and the second driving mechanism; the third driving mechanism drives the holding piece to be close to or far away from the non-film-coated support and drives the holding piece to clamp or loosen the non-film-coated support, and the second driving mechanism drives the clamping assembly to drive the non-film-coated support to rotate around the axial direction; when the tectorial membrane cover is in the non-tectorial membrane support outside and press from both sides tightly the non-tectorial membrane support, set up in the tectorial membrane of holding in the piece is pasted on the non-tectorial membrane support, when the piece of holding presss from both sides tightly the non-tectorial membrane support does not rotate.

6. The stent laminator of claim 5, wherein the clasps comprise balloons with cylindrical hollows, the cover being placed in the cylindrical hollows of the balloons; the third driving mechanism comprises a clamping driving unit and a moving driving unit; the clamping driving unit is connected with the air bag and is used for driving the air bag to inflate and deflate; the mobile driving unit is used for driving the holding piece to be close to or far away from the non-covered stent.

7. The stent laminator according to any of claims 3-6, wherein the clamping assembly includes a first clamping member and a second clamping member disposed opposite each other, wherein the first clamping member includes a first support bar and a securing member disposed at a first end of the first support bar, the securing member secures the first end of the uncoated stent, and the second clamping member is configured to support a second end of the uncoated stent; the second driving mechanism is connected with the fixing piece and drives the non-covered stent to rotate through the fixing piece.

8. The stent laminating machine according to claim 7, wherein the fixing member includes a fixing head and a fixing ring, the first end of the fixing head is detachably connected with the first end of the first support rod, the second end of the fixing head is of an openable circular ring structure, the second end of the fixing head is sleeved in an annular groove of the outer peripheral wall of the fixing ring, and the fixing ring can rotate relative to the fixing head; the first end of the non-covered stent is fixedly connected in the fixed ring, and the second driving mechanism is connected with the fixed part through the fixed ring and drives the non-covered stent to rotate through the fixed ring.

9. The stent laminator of claim 7, wherein the second clamp includes a second support bar and a support member, the support member is disposed at a first end of the second support bar, the support member is a cylindrical boss protruding toward the first clamp, an outer diameter of the cylindrical boss is the same as an inner diameter of the non-stent graft, and the support member is rotatable with the non-stent graft.

10. The stent laminator of claim 9, wherein there are a plurality of cylindrical bosses stacked in a direction from the second support bar toward the first clamp and tapering in diameter, the plurality of cylindrical bosses having an outer diameter that is the same as a plurality of different uncoated stent inner diameters.