CN215019701U

CN215019701U - Biological patch application device

Info

Publication number: CN215019701U
Application number: CN202120743098.5U
Authority: CN
Inventors: 王云兵; 余越盛; 邵南; 訾振军
Original assignee: Deke Medtech (hangzhou) Inc
Current assignee: Deke Medtech (hangzhou) Inc
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-12-07
Anticipated expiration: 2031-04-13

Abstract

The utility model discloses a biological patch discharges device, include: the device comprises a display piece, a fixed support shaft, a connecting rod, a central conduit and a power push rod; the biological patch is sewn on the display piece, and the end part of the display piece is rotatably connected to one end of the fixed supporting shaft; the side part of the fixed supporting shaft is provided with a guide groove, and the other end of the fixed supporting shaft is fixed with the central guide pipe; one end of the power push rod is fixed in the power push rod seat, the other end of the power push rod is inserted into the guide groove, and the power push rod seat drives the power push rod to slide along the guide groove; one end of the connecting rod is rotatably connected to the back of the display piece, the other end of the connecting rod is rotatably connected with the power push rod, and after the connecting rod rotates relative to the power push rod, the connecting rod drives the display piece to rotate relative to the fixed supporting shaft to be unfolded or rotated to be folded. The utility model discloses a biological patch discharges device can reach the tissue position with biological patch stability after, reliably expand to stably fold in order to withdraw from the tissue position after discharging the completion, it is nimble convenient to control, and discharges the process simple, and the wound is little, resume fast.

Description

Biological patch application device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to biological patch discharges device.

Background

The biological patch is made of artificial material, is used for repairing tissue organs such as heart, and is covered on the defect surface of the tissue organs so as to enable the tissue organs to continue normal work.

The existing biological patch is placed into the corresponding tissue organ by a conventional surgical procedure, which requires a wound of several centimeters to be made in the thoracico-abdominal region of the patient, through which the biological patch is delivered into the patient.

However, the conventional surgical operation has the disadvantages of large wound, slow recovery, much bleeding, etc., and thus, a new technical means for delivering the biological patch to the corresponding tissue organ is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a biological patch discharges device has solved the big, problem of recovering slowly, bleeding much of traditional surgery operation wound.

In order to achieve the above object, the utility model provides a biological patch discharges device, include: the device comprises a display piece, a fixed support shaft, a connecting rod, a central conduit and a power push rod; the biological patch is sewn on the display piece, and the end part of the display piece is rotatably connected to one end of the fixed supporting shaft; the side part of the fixed support shaft is provided with a guide groove, and the other end of the fixed support shaft is fixed with the central guide pipe; one end of the power push rod is fixed in the power push rod seat, the other end of the power push rod is inserted into the guide groove, and the power push rod seat drives the power push rod to slide along the guide groove; connecting rod one end rotate connect in the exhibition piece back, the other end with power push rod rotates to be connected, the connecting rod is relative power push rod rotates the back, the connecting rod drives the exhibition piece is relative fixed back shaft rotates to expand or rotate to fold. The biological patch is sewn through the spreading sheet, the applying device delivers the folded biological patch into a patient body through a small wound of several millimeters by utilizing the rigid connection relation among the spreading sheet, the fixed support shaft, the connecting rod, the central catheter and the power push rod, the biological patch delivered into the patient body is unfolded through the applying device, and after the biological patch is unfolded through the applying device and covers the tissue organ, the applying device is folded to withdraw the tissue organ.

In the above technical solution, preferably, the biological patch application device further includes an outer sleeve, the outer sleeve is sleeved outside the central catheter, and in a state where the stent is folded, the outer sleeve is further sleeved outside the stent, the fixed support shaft, the connecting rod and the power push rod; in the unfolded state of the stent, the stent and the connecting rod are exposed outside the outer sleeve. The outer sleeve is used for protecting the display piece, the connecting rod, the fixed supporting shaft and the power push rod.

In the above technical solution, preferably, the biological patch application device further includes a guide rod, a first limit structure, a second limit structure, and a first slider, a second slider, and a third slider; the first limiting structure and the second limiting structure are arranged on the guide rod, the second sliding block is arranged between the first limiting structure and the second limiting structure and moves along the guide rod, the first sliding block is arranged behind the first limiting structure and moves along the guide rod, and the third sliding block is arranged in front of the second limiting structure and moves along the guide rod; the third slide block is connected with the outer sleeve, and the first slide block is connected with the central guide pipe; a power connecting pipe is arranged between the outer sleeve and the pipe wall of the central pipe, one end of the power connecting pipe is connected with the power push rod seat, and the other end of the power connecting pipe is connected with the second sliding block; the first sliding block drives the central catheter to slide back and forth, the second sliding block drives the power push rod seat to slide back and forth, and the third sliding block drives the outer sleeve to slide back and forth. The first limiting structure and the second limiting structure are used for limiting the sliding range of the first sliding block, the second sliding block and the third sliding block so as to realize that the display piece and the outer sleeve move in a reasonable range.

In the above technical solution, preferably, the first sliding block drives the fixed support shaft to move forward or backward through the central guide tube, and the power connecting tube drives the power push rod to move forward or backward through the power push rod seat. The first sliding block controls the movement of the fixed supporting shaft through the central guide pipe, and the power connecting pipe controls the movement of the power push rod through the power push rod seat.

In the above technical solution, preferably, the fixed support shaft advances relative to the power push rod, so that the power push rod pulls the exhibition sheet to unfold through the connecting rod; the fixed supporting shaft retreats relative to the power push rod, so that the power push rod pushes the unfolding piece to fold through the connecting rod. The fixed supporting shaft slides relative to the power push rod to realize the unfolding or folding of the biological patch by the unfolding.

In the above technical scheme, preferably, be provided with the through wires hole on the panel, the panel back is provided with the buried line passageway, and the stylolite will through the through wires hole the biological patch is made up in the panel is openly, the stylolite passes through the buried line passageway extends to in the fixed back shaft.

The utility model also provides a biological patch discharges device, include: the device comprises a display piece, a fixed support shaft, a central pull rod and an elastic metal wire; the biological patch is sewn on the display piece, and the end part of the display piece is rotatably connected to one end of the fixed supporting shaft; the display piece is connected with the fixed support shaft through an elastic metal wire; a central shaft through hole is formed in the fixed support shaft, the central pull rod movably penetrates through the central shaft through hole of the fixed support shaft, and a press ring with the diameter larger than that of the central pull rod is arranged at the front end of the central pull rod; the clamping ring is in the in-process of retreating of center pull rod is overcome elasticity of elastic metal silk and bulldoze the exhibition piece is relative the fixed stay shaft rotates to expand, the in-process of pushing forward of center pull rod the exhibition piece is in relative under the elastic force of elastic metal silk the fixed stay shaft rotates to fold. The biological patch is sewn through the spreading sheet, the applying device delivers the folded biological patch into a patient body through a small wound of several millimeters by utilizing the rigid connection relation among the spreading sheet, the fixed support shaft, the central pull rod and the elastic metal wire, the biological patch delivered into the patient body is unfolded through the applying device, and after the biological patch is unfolded through the applying device and covers the tissue organ, the applying device is folded to withdraw the tissue organ.

In the above technical scheme, preferably, the front surface of the exhibition piece is provided with an inclined surface, and the press ring slides along the inclined surface to control the unfolding speed of the exhibition piece.

The utility model also provides a biological patch discharges device, include: the device comprises an expansion piece, a fixed support shaft, an elastic piece and a push rod; the biological patch is sewn on the display piece, and the end part of the display piece is rotatably connected to one end of the fixed supporting shaft; the elastic piece is arranged on the front surface of the display piece and pushes the display piece to rotate and unfold relative to the fixed supporting shaft; the lateral part of fixed stay shaft is provided with the guide way, the push rod set up in the guide way, the push rod is released in the front correspond behind the guide way bulldoze in the back of exhibition piece lasts, and it overcomes to push forward continuously the elasticity of flexure strip makes the exhibition piece is relative fixed stay shaft rotates and folds up. The biological patch is sewn through the spreading sheet, the applying device delivers the folded biological patch into the body of a patient through a small wound of several millimeters by utilizing the rigid connection relation among the spreading sheet, the fixed supporting shaft, the elastic sheet and the push rod to be matched, the biological patch delivered into the body of the patient is unfolded through the applying device, and the applying device is folded to withdraw the tissue organ after the biological patch is unfolded through the applying device and covers the tissue organ.

In the above technical solution, preferably, a push wheel is arranged at the front end of the push rod, and the push wheel rolls and pushes against the back of the exhibition piece in the process of pushing the push rod forward. The resistance of the push rod in the pushing process is reduced.

Compared with the prior art, the beneficial effects of the utility model are that: the biological patch is sewn through the unfolding sheet, and the biological patch can be reliably unfolded after stably reaching a tissue part by utilizing the rigid connection relation among the unfolding sheet, the fixed support shaft, the connecting rod, the central catheter and the power push rod, and can be stably folded to withdraw from the tissue part after being applied, so that the operation is flexible and convenient, the application process is simple, the wound is small, and the recovery is fast.

Drawings

Fig. 1 is a structural diagram illustrating a closed state of an unfolding plate of a biological patch applying device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a stent in a half-extended state of the disclosed biological patch application device of the embodiment of FIG. 1;

FIG. 3 is a schematic view of the deployed state of the stent of the disclosed biological patch application device of the embodiment of FIG. 1;

fig. 4 is a schematic front structural view of a display piece according to an embodiment of the present invention;

fig. 5 is a schematic back structure view of the display piece according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a fixed support shaft according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a power push rod seat according to an embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of the biological patch application device shown in FIG. 2;

FIG. 9 is a schematic structural view showing a half-extended state of the stent of the biological patch application device according to the second embodiment of the present invention;

FIG. 10 is a schematic view of the deployed state of the stent of the disclosed biological patch application device of the embodiment shown in FIG. 9;

fig. 11 is a structural diagram illustrating a half-extended state of the display of the biological patch applying device according to the third embodiment of the present invention;

fig. 12 is a structural view illustrating a stent in a deployed state of the biological patch application device disclosed in the embodiment of fig. 11.

Reference numbers in the figures:

11. unfolding the slices; 111. threading holes; 112. a wire burying channel; 12. fixing a support shaft; 121. a guide groove; 13. a connecting rod; 14. a central conduit; 15. a power push rod; 151. a power push rod seat; 152. a power connecting pipe; 16. an outer sleeve; 17. a guide bar; 181. a first limit structure; 182. a second limit structure; 191. a first slider; 192. a second slider; 193. a third slider; 21. a central pull rod; 211. pressing a ring; 22. an elastic metal wire; 31. an elastic sheet; 32. a push rod; 321. a push wheel.

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 embodiments of the present invention, but not all embodiments. 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 present invention, it is to be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "rotating", "sewing", "connecting", "fixing", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 1 is a structural schematic diagram of an exhibition piece closed state of a disclosed biological patch applying device in an embodiment of the present invention, fig. 2 is a structural schematic diagram of an exhibition piece half-extended state of the disclosed biological patch applying device in an embodiment shown in fig. 1, fig. 3 is a structural schematic diagram of an exhibition piece extended state of the disclosed biological patch applying device in an embodiment shown in fig. 1, as shown in fig. 1 to fig. 3, according to the present invention, a biological patch applying device is provided, which includes: the device comprises a display piece 11, a fixed support shaft 12, a connecting rod 13, a central guide pipe 14 and a power push rod 15; the biological patch (not shown in the figure) is sewed on the display piece 11, and the end part of the display piece 11 is rotatably connected with one end of the fixed supporting shaft 12; the side of the fixed support shaft 12 is provided with a guide groove 121, and the other end of the fixed support shaft 12 is fixed with the central guide pipe 14; one end of the power push rod 15 is fixed in the power push rod seat 151, the other end of the power push rod 15 is inserted into the guide groove 121, and the power push rod seat 151 drives the power push rod 15 to slide along the guide groove 121; one end of the connecting rod 13 is rotatably connected to the back of the display piece 11, the other end of the connecting rod 13 is rotatably connected with the power push rod 15, and after the connecting rod 13 rotates relative to the power push rod 15, the connecting rod 13 drives the display piece 11 to rotate and unfold or rotate and fold relative to the fixed supporting shaft 12.

Fig. 4 is the utility model discloses the front structure sketch map of the exhibition piece that an embodiment discloses, fig. 5 is the utility model relates to a back structure sketch map of the exhibition piece that an embodiment discloses, fig. 6 is the utility model relates to a structural sketch map of the fixed back shaft that an embodiment discloses, fig. 7 is the utility model relates to a structural sketch map of power push rod seat that an embodiment discloses, as shown in fig. 4 to 7, in this embodiment, make up biological patch through exhibition piece 11, utilize the rigid connection relation cooperation between exhibition piece 11, fixed back shaft 12, connecting rod 13, central pipe 14 and the power push rod 15, can reach the tissue position with biological patch is stable after, reliably expand to stably fold in order to withdraw from the tissue position after releasing the completion, control nimble convenience, and the process is simple, and the wound is little, resume fast.

Specifically, the fixed support shaft 12 is rotatably connected with the display piece 11, a guide groove 121 is formed in the fixed support shaft 12, and the power push rod 15 slides along the guide groove 121. Wherein, the middle shaft of the fixed supporting shaft 12 is also provided with a through hole, the outer side of the through hole is provided with a threaded hole, the threaded hole is used for connecting with the end part of the display piece 11, the through hole is used for leading out a suture line for sewing the biological patch, or is used for installing a movable endoscope and monitoring the process of the whole applying device applying the biological patch to tissues. One end of the connecting rod 13 is rotatably connected with the display piece 11, the other end is rotatably connected with the power push rod 15, the central guide tube 14 penetrates through the power push rod seat 151, and the outer sleeve 16 is sleeved outside the fixed support shaft 12 and the power push rod seat 151.

In the above embodiment, preferably, the biological patch application device further includes an outer sleeve 16, the outer sleeve 16 is sleeved outside the central conduit 14, and in the folded state of the stent 11, the outer sleeve 16 is further sleeved outside the stent 11, the fixed support shaft 12, the connecting rod 13 and the power push rod 15; in the unfolded state of the stent 11, the stent 11 and the links 13 are exposed outside the outer tube 16.

In the above embodiment, preferably, the plurality of panels 11 are symmetrically connected to the end of the fixed support shaft 12, the sewn biological patch is wrapped inside the panels 11 in the closed state, and the biological patch is spread and opened in the open state of the panels 11.

In the above embodiment, preferably, in a state where the outer sleeve 16 covers the display piece 11, the outer sleeve 16 is retracted by the third slider 193 to expose the display piece 11, and the fixed support shaft 12 is advanced by the first slider 191 to drive the display piece 11 to be unfolded by the pulling action of the connecting rod 13.

In the above embodiment, preferably, the display panel 11 is provided with a threading hole 111, the back of the display panel 11 is provided with a thread burying channel 112, the suture thread sews the biological patch on the front of the display panel 11 through the threading hole 111, and the suture thread extends out of the fixing support shaft 12 through the thread burying channel 112.

In the implementation process, the outer sleeve 16 covers the whole position of the fixing support shaft 12 and the display piece 11 until reaching a tissue part needing to be applied with the biological patch, after reaching the tissue part, the outer sleeve 16 is retreated to expose the display piece 11 at the head and the position of the fixing support shaft 12, the central guide pipe 14 is pushed forwards to drive the connecting rod 13 and the display piece 11 to be spread together, then the biological patch sewn on the display piece 11 is synchronously spread, the applying device is integrally pushed forwards to attach the biological patch to the tissue surface, then the suture line is drawn out, and the biological patch is separated from the display piece 11 to be independently combined with the tissue surface. At this point, the whole applicator is moved backwards and the central catheter 14 is pulled back, the stent 11 is closed, and the outer sleeve 16 is pushed forward, exiting the tissue site, completing the entire application of the biological patch.

FIG. 8 is a schematic cross-sectional view of the biological patch application device of FIG. 2. in the above embodiment, as shown in FIG. 8, the biological patch application device preferably further comprises a guide rod 17, a first stop structure 181, a second stop structure 182, and a first slider 191, a second slider 192, and a third slider 193; the first limiting structure 181 and the second limiting structure 182 are arranged on the guide rod 17, the second sliding block 192 is arranged between the first limiting structure 181 and the second limiting structure 182 and moves along the guide rod 17, the first sliding block 191 is arranged behind the first limiting structure 181 and moves along the guide rod 17, and the third sliding block 193 is arranged in front of the second limiting structure 182 and moves along the guide rod 17; the third slider 193 is connected with the outer sleeve 16, and the first slider 191 is connected with the central conduit 14; a power connecting pipe 152 is arranged between the outer sleeve 16 and the pipe wall of the central catheter 14, one end of the power connecting pipe 152 is connected with the power push rod seat 151, and the other end is connected with the second sliding block 192; the first slider 191 drives the central catheter 14 to slide back and forth, the second slider 192 drives the power push rod base 151 to slide back and forth, and the third slider 193 drives the outer sleeve 16 to slide back and forth.

The first sliding block 191 drives the fixed support shaft 12 to move forward or backward through the central guide tube 14, and the power connecting tube 152 drives the power push rod 15 to move forward or backward through the power push rod seat 151. The fixed supporting shaft 12 advances relative to the power push rod 15, so that the power push rod 15 pulls the display piece 11 to be unfolded through the connecting rod 13; the fixed supporting shaft 12 is retracted relative to the power push rod 15, so that the power push rod 15 pushes the display pieces 11 to be folded through the connecting rod 13.

Specifically, in the implementation process, by presetting the setting positions of the first limiting structure 181 and the second limiting structure 182, each slide block can be directly slid in the implementation process without considering the influence of the slide displacement of the slide block on the position of the front-end display piece 11, which is convenient for operation.

FIG. 9 is a schematic structural view showing a half-extended state of the stent of the biological patch application device according to the second embodiment of the present invention; fig. 10 is a schematic view of the structure of the spread sheet in the deployed state of the biological patch application device disclosed in the embodiment shown in fig. 9, and the second embodiment is an improvement scheme based on the first embodiment, and the improvement is that: and a structure for rotating the display piece to be unfolded or folded. As shown in fig. 9 and 10, the present invention also provides a biological patch application device, comprising: the exhibition piece 11, the fixed supporting shaft 12, the central pull rod 21 and the elastic metal wire 22; the biological patch is sewn on the display piece 11, and the end part of the display piece 11 is rotatably connected to one end of the fixed supporting shaft 12; the display piece 11 is also connected with the fixed supporting shaft 12 through an elastic metal wire 22; a middle shaft through hole is arranged on the fixed support shaft, the central pull rod 21 is movably arranged in the middle shaft through hole of the fixed support shaft 12 in a penetrating way, and a press ring 211 with the diameter larger than that of the central pull rod 21 is arranged at the front end of the central pull rod 21; the press ring 211 overcomes the elasticity of the elastic metal wire 22 and pushes the spangles 11 to rotate and unfold relative to the fixed support shaft 12 in the process of retreating the central pull rod 21, and the spangles 11 rotate and fold relative to the fixed support shaft 12 under the action of the elasticity of the elastic metal wire 22 in the process of advancing the central pull rod 21.

In the second embodiment, compared to the first embodiment, the present embodiment does not adopt a link structure, so that the space required for unfolding the display panel 11 is smaller. Instead, the central pull rod 21 at the center of the fixed support shaft 12 is used for pushing and pulling back and forth, the press ring 211 at the front end in the pulling back process of the central pull rod 21 pushes and presses the surrounding display pieces 11 to unfold the display pieces 11, and the elastic action of the elastic metal wire 22 fixed between the fixed support shaft 12 and the display pieces 11 is used for restoring the display pieces 11 to the folded state in the pushing forward process of the central pull rod 21. In this way, in the implementation, before reaching the tissue site, the central pull rod 21 is kept in the forward pushing state, namely, the stent 11 folds the biological patch, after reaching the tissue site, the central pull rod 21 is pulled back to push the stent 11 to the unfolding state, the biological patch is attached to the tissue site, then the suture line is drawn out, and the biological patch is separated from the stent 11, so that the biological patch is independently combined with the tissue surface. At this point, the whole application device is moved backwards and the central pull rod 21 is pushed forwards to close the stent 11, and then the tissue site is withdrawn, completing the whole application process of the biological patch.

In the second embodiment, preferably, the front surface of the exhibition sheet 11 is provided with an inclined surface, and the pressing ring 211 slides along the inclined surface to control the unfolding speed of the exhibition sheet 11. In implementation, during the forward pushing or backward moving process of the central pull rod 21, the press ring 211 passes through the inclined plane on the spangles 11, and the slope of the inclined plane can accelerate the unfolding speed or the folding speed of the spangles 11. By adjusting the slope of the slope, the speed of opening or closing the slide 11 can be controlled.

In the second embodiment, preferably, the biological patch applying device further comprises an outer sleeve 16, the outer sleeve 16 is movably sleeved outside the fixed support shaft 12, and the outer sleeve 16 is sleeved outside the display 11 and the fixed support shaft 12 during the process of moving the applying device to the tissue site and the process of moving the applying device outwards from the tissue site, so as to avoid scraping the surrounding tissue.

Fig. 11 is a structural diagram of a half-extended state of an expansion piece of a biological patch applying device in a third embodiment of the present invention, fig. 12 is a structural diagram of a half-extended state of an expansion piece of a biological patch applying device disclosed in the embodiment shown in fig. 11, and the third embodiment is an improved scheme based on the first embodiment, and the improvement is that: and a structure for rotating the display piece to be unfolded or folded. As shown in fig. 11 and 12, the present invention also provides a biological patch applying device, comprising: the exhibition plate 11, the fixed supporting shaft 12, the elastic plate 31 and the push rod 32; the biological patch is sewn on the display piece 11, and the end part of the display piece 11 is rotatably connected to one end of the fixed supporting shaft 12; the elastic piece 31 is arranged on the front surface of the display piece 11, and the elastic piece 31 pushes the display piece 11 to rotate and unfold relative to the fixed support shaft 12; the side of the fixed support shaft 12 is provided with a guide groove 121, the push rod 32 is arranged in the guide groove 121, the push rod 32 pushes the back of the display piece 11 after pushing out the guide groove 121 forward, and the display piece 11 rotates and closes relative to the fixed support shaft 12 by overcoming the elastic force of the elastic piece 31 after continuously pushing forward.

This embodiment is also the same as the first embodiment, without using the link 13 structure, so that the space required for unfolding the display panel 11 is smaller. In this embodiment, the elastic piece 31 will expand the display piece 11 under the natural stretching state, and the pushing of the push rod 32 to the display piece 11 will overcome the elastic force of the elastic piece 31 to close the display piece 11. In practice, the pushing action of the push rod 32 on the stent 11 is maintained to fold the stent 11, after the application device reaches the tissue site, the push rod 32 is slowly pulled backwards, the stent 11 is restored to the unfolded state under the elastic force of the elastic piece 31, the biological patch is attached to the tissue site, then the suture is drawn out, and the biological patch is separated from the stent 11 to be independently combined with the tissue surface. At this point, the whole applicator is moved backwards and the push rod 32 is pushed forwards, causing the stent 11 to close up and then to withdraw from the tissue site, completing the whole application process of the biological patch.

In the third embodiment, preferably, the front end of the push rod 32 is provided with a push wheel 321, and the push wheel 321 rolls and pushes against the back of the exhibition board 11 during the forward pushing process of the push rod 32. The push wheel 321 can greatly reduce the friction between the push rod 32 and the display piece 11, and the rolling pushing mode is more convenient for the accurate control of the display piece 11.

In the present application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first feature or the second feature or indirectly contacting the first feature or the second feature through an intermediate.

Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature "under", "below" and "beneath" a second feature may be directly or obliquely under the first feature or may simply mean that the first feature is at a lower level than the second feature.

In the description of the present specification, reference to the description of the terms "present embodiment," the above-described embodiment, "the embodiment," and the like, means 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 the invention. 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 embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A biological patch application device, comprising: the device comprises a display piece, a fixed support shaft, a connecting rod, a central conduit and a power push rod;

the biological patch is sewn on the display piece, and the end part of the display piece is rotatably connected to one end of the fixed supporting shaft;

the side part of the fixed support shaft is provided with a guide groove, and the other end of the fixed support shaft is fixed with the central guide pipe;

one end of the power push rod is fixed in the power push rod seat, the other end of the power push rod is inserted into the guide groove, and the power push rod seat drives the power push rod to slide along the guide groove;

connecting rod one end rotate connect in the exhibition piece back, the other end with power push rod rotates to be connected, the connecting rod is relative power push rod rotates the back, the connecting rod drives the exhibition piece is relative fixed back shaft rotates to expand or rotate to fold.

2. The biological patch application device as claimed in claim 1, further comprising an outer sleeve, the outer sleeve being sleeved outside the central catheter, the outer sleeve being further sleeved outside the stent, the fixed support shaft, the link and the power pushrod in the stent closed state; in the unfolded state of the stent, the stent and the connecting rod are exposed outside the outer sleeve.

3. The biological patch application device of claim 2, further comprising a guide rod, a first limit structure, a second limit structure, and a first slide, a second slide, and a third slide;

the first limiting structure and the second limiting structure are arranged on the guide rod, the second sliding block is arranged between the first limiting structure and the second limiting structure and moves along the guide rod, the first sliding block is arranged behind the first limiting structure and moves along the guide rod, and the third sliding block is arranged in front of the second limiting structure and moves along the guide rod;

the third slide block is connected with the outer sleeve, and the first slide block is connected with the central guide pipe;

a power connecting pipe is arranged between the outer sleeve and the pipe wall of the central pipe, one end of the power connecting pipe is connected with the power push rod seat, and the other end of the power connecting pipe is connected with the second sliding block;

the first sliding block drives the central catheter to slide back and forth, the second sliding block drives the power push rod seat to slide back and forth, and the third sliding block drives the outer sleeve to slide back and forth.

4. The biological patch application device as claimed in claim 3, wherein the first slider drives the fixed support shaft to advance or retreat through the central guide tube, and the power connection tube drives the power push rod to advance or retreat through the power push rod seat.

5. The biological patch application device as claimed in claim 1, wherein the stationary support shaft is advanced relative to the powered push rod to cause the powered push rod to pull the stent through the linkage for deployment; the fixed supporting shaft retreats relative to the power push rod, so that the power push rod pushes the unfolding piece to fold through the connecting rod.

6. The biological patch application device as claimed in claim 1, wherein a threading hole is provided on the panel, a thread burying channel is provided on the back of the panel, a suture thread sews the biological patch on the front of the panel through the threading hole, and the suture thread extends into the fixing support shaft through the thread burying channel.

7. A biological patch application device, comprising: the device comprises a display piece, a fixed support shaft, a central pull rod and an elastic metal wire;

the display piece is connected with the fixed support shaft through an elastic metal wire;

a central shaft through hole is formed in the fixed support shaft, the central pull rod movably penetrates through the central shaft through hole of the fixed support shaft, and a press ring with the diameter larger than that of the central pull rod is arranged at the front end of the central pull rod;

the clamping ring is in the in-process of retreating of center pull rod is overcome elasticity of elastic metal silk and bulldoze the exhibition piece is relative the fixed stay shaft rotates to expand, the in-process of pushing forward of center pull rod the exhibition piece is in relative under the elastic force of elastic metal silk the fixed stay shaft rotates to fold.

8. The biological patch application device as claimed in claim 7, wherein the display front face is provided with a ramp along which the compression ring slides to control the speed of deployment of the display.

9. A biological patch application device, comprising: the device comprises an expansion piece, a fixed support shaft, an elastic piece and a push rod;

the elastic piece is arranged on the front surface of the display piece and pushes the display piece to rotate and unfold relative to the fixed supporting shaft;

the lateral part of fixed stay shaft is provided with the guide way, the push rod set up in the guide way, the push rod is released in the front correspond behind the guide way bulldoze in the back of exhibition piece lasts, and it overcomes to push forward continuously the elasticity of flexure strip makes the exhibition piece is relative fixed stay shaft rotates and folds up.

10. The biological patch application device as claimed in claim 9, wherein a push wheel is provided at a front end of the push rod, and the push wheel is rolled and pushed against the back of the stent during the forward pushing of the push rod.