CN217187450U - Tissue glue applicator - Google Patents

Abstract

A tissue gel applicator, comprising: an applicator body comprising: an applicator body having a receiving cavity configured to receive a portion of an injection device; a stationary handle portion extending from the applicator body; a drive handle portion pivotally connected to the applicator body; and the transmission assembly is arranged in the accommodating cavity and driven by the driving handle part, and pushes the injection device to finish the application of the tissue glue in the process that the driving handle part rotates to be close to the fixed handle part.

Description

Tissue glue applicator

Technical Field

The present disclosure relates to the field of medical devices, and more particularly, to a tissue glue applicator.

Background

The tissue glue is tissue adhesive, is used for bonding human tissues, and can be directly coated or sprayed on wounds or wound surfaces for wound healing. The medical hydrogel as one kind of tissue glue is one new kind of functional polymer material, which has hydrophilic group, water swellable and water insoluble polymer with three-dimensional network structure. The modified starch has the characteristics of biological safety, modifiability, good mechanical property and the like, and has wide application in the fields of biomedicine, agriculture, industry, environmental protection and the like. In the field of biomedicine, hydrogel can be used as a medical dressing to cover wounds and achieve rapid healing. In addition, the hydrogel can also be used as a drug slow-release carrier, a tissue engineering material, an oral application material and the like, and has very wide application prospect in the biomedical field due to the porosity, softness, high water content and high tissue compatibility. Currently, there are a variety of hydrogel materials in the market for clinical hemostatic sealing.

The medical hydrogel has wide application range and can be applied to various wound surfaces including body surfaces, internal bodies and the like. In the prior art, hydrogel application is mainly completed through a double syringe, the double syringe is generally direct injection, and the application speed and the application amount have large fluctuation. And because the spray is directly injected by hands, the application force is small, and the spray-shaped spray cannot be formed. In addition, when hydrogel is applied under the endoscope, the gel mixture can be applied only in a droplet form due to the long length of the tip spray tube, and spray-like spray cannot be formed, so that the hydrogel application thickness is not uniform, and the range is not controllable.

SUMMERY OF THE UTILITY MODEL

Some embodiments of the present disclosure provide a tissue glue applicator comprising:

an applicator body comprising:

an applicator body having a receiving cavity configured to receive a portion of an injection device;

a stationary handle portion extending from the applicator body;

a drive handle portion pivotally connected to the applicator body; and

a transmission assembly arranged in the accommodating cavity and driven by the driving handle part,

during rotation of the drive handle portion adjacent the fixed handle portion, the drive assembly pushes against the injection device to complete application of tissue gel.

In some embodiments, the transmission assembly comprises:

a rack configured to move in a first direction in the accommodation chamber; and

a push injection plate fixedly connected with one end of the rack and configured to push the injection device,

the end of the drive handle portion adjacent the applicator body is provided with a catch configured to engage with the teeth of the rack,

in the process that the driving handle part rotates to be close to the fixed handle part, the clamping piece pushes the rack to move towards the injection device along the first direction, so that the injection device is pushed and pressed by the injection plate.

In some embodiments, the tissue gel applicator further comprises:

a first return elastic means connected to the driving handle portion so that the driving handle portion has a tendency to return to an initial position,

and responding to the position of the driving handle part at the initial position, the buckling piece is separated from the rack, and the buckling piece is buckled with the teeth of the rack in the process that the driving handle part rotates from the initial position to be close to the fixed handle part.

In some embodiments, the catch is configured to be movable relative to the end of the drive handle portion proximate the applicator body between a first position and a second position, the catch being configured to engage the teeth of the rack in response to the catch being in the first position, the catch being configured to disengage from the rack in response to the catch being in the second position,

the tissue glue applicator further comprises a first elastic component connected with the fastener, so that the fastener has a tendency to be located at a first position.

In some embodiments, the tissue applicator further comprises:

a locking assembly configured to engage the gear rack and prevent the gear rack from moving away from the injection device in a first direction.

In some embodiments, the locking assembly comprises:

a latch movable between a third position and a fourth position, configured to engage the teeth of the rack, the latch configured to engage the teeth of the rack in response to the latch being in the third position, preventing the rack from moving away from the injection device in the first direction, the latch disengaging the rack in response to the latch being in the fourth position;

a second elastic member connected with the latch member such that the latch member has a tendency to be located at a third position.

In some embodiments, the locking assembly further comprises:

a button disposed on the applicator body, the latch switching from the third position to a fourth position in response to the button being pressed.

In some embodiments, the transmission assembly further comprises:

second return resilient means connected to the rack such that the rack has a tendency to move away from the injection device in a first direction.

In some embodiments, the applicator body further comprises:

a cover configured to be snapped onto the applicator body to close the receiving cavity,

the cover is removably or pivotally connected to the applicator body.

In some embodiments, the injection device comprises:

a first syringe and a second syringe disposed in parallel with one another, the first syringe and the second syringe configured to contain a first liquid and a second liquid, respectively, each of the first syringe and the second syringe comprising:

a pipe body;

the push rod is at least partially arranged in the tube body, and a piston is arranged at the end part of the push rod close to the tube body;

a holder configured to hold the tubes of the first and second syringes;

the push plate is connected with the ends, away from the tube body, of the push rods of the first syringe and the second syringe and is configured to synchronously push the push rods of the first syringe and the second syringe to move towards the tube body; and

and a mixing nozzle connected to the tube bodies of the first and second syringes, and configured to mix and discharge the first and second liquids.

In some embodiments, the injection device further comprises:

the adapter is connected with the tube bodies of the first syringe and the second syringe; and

an injection tube disposed on a side of the adapter remote from the first and second injectors, connected to the adapter, and configured to transfer the first and second liquids,

the mixed shower nozzle sets up the injection pipe is kept away from one side of adapter, with the injection pipe is connected.

Relative to the related art, the present disclosure has at least the following technical effects:

the tissue glue applicator adopts a transmission structure such as a lever, a rack and the like, realizes an injection device arranged in the tissue glue applicator, such as a pressing and pushing injection of a double-injector, increases the pushing injection force of the hydrogel collagen liquid, increases the injection pressure of the stock solution, can form mist injection, and realizes the sufficient mixing and uniform spraying of the hydrogel collagen liquid. Particularly, in the process of coating hydrogel under an endoscope, the higher injection force can be provided, so that the higher injection pressure is still realized on the premise of a longer injection pipe, and the spray-shaped coating is realized.

Drawings

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

FIG. 1 is a schematic structural view of a tissue glue applicator according to some embodiments of the present disclosure;

FIG. 2 is a schematic diagram of the internal structure of a tissue glue applicator according to some embodiments of the present disclosure;

FIG. 3 is an enlarged view of the region M in FIG. 2;

FIG. 4 is a schematic cross-sectional view of a tissue gel applicator provided in some embodiments of the present disclosure; and

fig. 5 is an exploded view of a tissue glue applicator provided by some embodiments of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure clearer, the present disclosure will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present disclosure, rather than all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the scope of protection of the present disclosure.

The terminology used in the embodiments of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in the disclosed embodiments and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, the recitation of an element by the phrase "comprising a" does not exclude the presence of additional like elements in a commodity or device comprising the element.

The present disclosure provides a tissue glue applicator comprising: an applicator body comprising: an applicator body having a receiving cavity configured to receive a portion of an injection device; a stationary handle portion extending from the applicator body; a drive handle portion pivotally connected to the applicator body; and the transmission assembly is arranged in the accommodating cavity and driven by the driving handle part, and pushes the injection device to finish the application of the tissue glue in the process that the driving handle part rotates to be close to the fixed handle part.

By adopting the tissue glue applicator provided by the disclosure, the injection device, such as a double-injector, is arranged in the accommodating cavity of the tissue glue applicator, and the transmission structure, such as a lever, a rack and the like, is adopted to realize the pressure pushing of the injection device, such as the double-injector, arranged in the tissue glue applicator. Compared with manual direct injection of a double injector in the related technology, the injection force and stability of the hydrogel stock solution can be increased, so that the injection pressure of the stock solution is increased, mist-shaped injection can be formed, and the sufficient mixing and uniform spraying of the hydrogel collagen solution are realized. Particularly, in the process of coating hydrogel under an endoscope, the higher injection force can be provided, so that the higher injection pressure is still realized on the premise of a longer injection pipe, and the spray-shaped coating is realized.

Alternative embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a tissue glue applicator according to some embodiments of the present disclosure, and fig. 2 is a schematic structural view of an inner part of the tissue glue applicator according to some embodiments of the present disclosure. As shown in fig. 1 and 2, some embodiments of the present disclosure provide a tissue glue applicator 100, the tissue glue applicator 100 including: an applicator body 10, a drive handle portion 20, and a transmission assembly 30.

The applicator main body 10 includes an applicator body 11 and a fixed handle portion 12. The applicator body 11 has a housing cavity 111 configured to house the injection device 40, for example being part of a double syringe; a fixed handle portion 12 extends from the applicator body 11 for holding by a user during use. A drive handle portion 20 is pivotally connected to the applicator body 10, for example by a pivot a, a portion of the drive handle portion 20 being located in the receiving cavity 111; the transmission assembly 30 is disposed in the receiving cavity 111 and is driven by the driving handle part 20. During rotation of the drive handle portion 20 adjacent the fixed handle portion 13, the drive assembly 30 pushes against the injection device 40 to complete the application of tissue glue, such as hydrogel.

Fig. 3 is an enlarged view of the region M in fig. 2, and fig. 4 is a cross-sectional structural view of a tissue gel applicator provided in some embodiments of the present disclosure. Specifically, in some embodiments, as shown in fig. 1-4, the gearing assembly 30 includes a rack 31 and a bolus plate 32. The rack 31 is configured to move in the first direction X in the accommodation chamber 111; a bolus plate 32 is fixedly connected to an end of the rack 31, e.g. the end facing away from the injection device 40 in the first direction X, and is configured to push against the injection device 40.

The rack 31 is, for example, substantially elongated, and has a plurality of teeth 311 arranged in the first direction X on a surface thereof adjacent to the drive handle portion 20. The plurality of teeth 311 are uniformly arranged, for example, along the first direction X, with grooves 312 formed between adjacent teeth 311. As shown in fig. 3, the recess 312 has, for example, a first face substantially perpendicular to a plane 313 of the rack 31 remote from the drive handle portion, and a second face inclined with respect to the plane 313.

A catch 21 is provided at an end of the drive handle portion 20 close to the applicator body 11, the catch 21 being configured to engage with the teeth 311 of the rack. As shown in fig. 3, the latch 21 includes a latch portion 211, which is disposed at an end of the latch 21, and the latch 21 is engaged with the teeth 311 of the rack 31, that is, the latch portion 211 of the latch 21 is inserted into the groove 312 between the adjacent teeth 311, so that the rack 31 is moved toward the injection device 40 along the first direction X by the rotation of the driving handle portion 20.

During the process that the driving handle part 20 rotates around the pivot axis a to approach the fixed handle part 12, the latch 21 pushes the rack 31 to move towards the injection device 40 along the first direction X, so that the injection plate 40 pushes the injection device 40 to realize the application and injection of the tissue glue.

As shown in fig. 2, the end of the driving handle portion 20 away from the applicator body 11 is provided with a grip portion, for example, so that the user can apply a force by hand to rotate the driving handle portion 20 close to the fixed handle portion 12. The distance between the end of the driving handle part 20 far away from the applicator body 11 and the pivot axis a is far larger than the distance between the end of the driving handle part 20 far away from the applicator body 11 and the pivot axis a, and due to the distance between the levers, the force applied by the hand of the user on the holding part can be applied on the rack 31 in a multiplied magnification, so that the push injection plate 32 applies enough force to the injection device 40, and the injection pressure of the hydraulic collagen liquid in the injection device 40, such as a double-injector, is ensured to be increased, and the spray can be formed to realize the sufficient mixing and uniform spraying of the hydraulic collagen liquid.

In some embodiments, as shown in fig. 4, the tissue gel applicator 100 further comprises a first return spring means 22, such as a coil spring, coupled to the actuation handle portion 20, such that the actuation handle portion 20 has a tendency to return to an initial position.

In response to the driving handle portion 20 being at the initial position, the catch 21 is disengaged from the rack 31, and the catch 21 engages the teeth 311 of the rack 31 during the rotation of the driving handle portion 20 from the initial position toward the fixed handle portion 12.

In some embodiments, as shown in fig. 3 and 4, the catch 21 is configured to be movable between a first position and a second position relative to the end of the drive handle portion 20 near the applicator body 11, the catch being configured to engage with the teeth 311 of the rack 31 in response to the catch 21 being in the first position, and the catch 21 being configured to disengage from the rack 31 in response to the catch 21 being in the second position. For example, the catch 21 is pivotally connected to the end of the drive handle portion 20 near the applicator body 11, such as by a pivot 212, such that the catch 21 can rotate between a first position and a second position relative to the end of the drive handle portion 20 near the applicator body 11. When the catch 21 is at the first position, the catch 211 is further away from the end of the drive handle portion 20 close to the applicator body 11, so that the catch 21 can be caught by the teeth 311 of the rack 31, and when the catch 21 is at the second position, the catch 211 is closer to the end of the drive handle portion 20 close to the applicator body 11, so that the catch 21 can be disengaged from the teeth 311 of the rack 31.

The tissue gel applicator 100 further comprises a first elastic member connected to the latch 21 such that the latch 21 has a tendency to be in a first position.

When the driving handle portion 20 is operated by a user to rotate from the initial position to approach the fixed handle portion, along with the rotation of the driving handle portion 20, the latch 21 located at the first position gradually approaches the rack 31 until the latch is engaged with the rack 31, and along with the further rotation of the driving handle portion 20, the latch 21 drives the rack 31 to move toward the injection device 40 along the first direction X, specifically, the latch 211 of the latch 21 pushes against the first surface of the groove 312 into which the latch is inserted, so as to drive the bolus plate 32 to apply a stable and large pressure to the injection device 40.

When the force applied to the driving handle portion 20 is removed, the driving handle portion 20 will return to the initial position under the action of the first return elastic means 22, during which the rack 31 may not move, and the latch 21 is biased from the first position towards the second position under the action of the second face of the recess 312 into which it is inserted, so that the latch 21 is disengaged from the recess 312 into which it is inserted.

In some of the tissue applicators 100 further include a locking assembly 50, the locking assembly 50 being engageable with the gear rack 31 to prevent movement of the gear rack 31 in a first direction away from the injection device 40. That is, when the driving handle portion 20 is rotated to move the rack 31 to a certain position, and then the driving handle portion 20 returns to the initial position, the locking assembly 50 can lock the rack 31 at the certain position, and when the driving handle portion 20 is driven again to move toward the fixed handle portion 12, the latch portion 211 can be engaged with the teeth of the rack 31 again, and the driving rack 31 further moves toward the injection device 40 along the first direction X.

In some embodiments, as shown in fig. 4, the locking assembly 50 includes: a latch 51 and a second elastic member 52. The latch 51 is movable, e.g., up and down in fig. 4, between a third position, which is located above the fourth position, and a fourth position. The latch 51 may engage the teeth 311 of the rack 31, and in response to the latch 51 being in the third position, the latch 51 may engage the teeth 311 of the rack 31, preventing the rack 31 from moving away from the injection device 40 in the first direction X, i.e., preventing the rack 31 from being retracted, and in response to the latch 51 being in the fourth position, the latch 51 disengages the rack, in which case the rack 31 may be retracted to the original position. A second resilient member 52, for example a spring, is connected to the latch 51 such that the latch 51 has a tendency to be in a third position.

In some embodiments, the locking assembly 50 further comprises a button 53, the button 53 being disposed on the applicator body 10, the latch 51 switching from the third position to the fourth position in response to the button 53 being pressed.

In some embodiments, the locking assembly 50 further includes a push rod 54, the push rod 54 and the locking member 51 are slidably abutted against each other, an abutting surface B of the push rod 54 and the locking member 51 is, for example, an inclined surface, and a moving direction of the push rod 54 is, for example, substantially perpendicular to a moving direction of the locking member 51. When the button 53 is pressed, the button 53 pushes against the push post 54 to move toward the inside of the applicator body 10, and the push post 54 pushes against the latch 51 to move from the third position toward the fourth position.

Fig. 5 is an exploded view of a tissue gel applicator according to some embodiments of the present disclosure, and in some embodiments, as shown in fig. 1 to 5, the locking member 51 has a symmetrical structure, for example, and the number of the push button 53, the push rod 54 and the second elastic member 52 is two, and the two push buttons 53 are respectively disposed on both sides of the applicator body 10. By pressing any one of the buttons 53, the corresponding push rod 54 can push the locking member 51 to move from the third position to the fourth position.

In some embodiments, as shown in fig. 1 to 5, the transmission assembly further comprises a second return elastic means 33, for example a coil spring, connected to the rack 31, so that the rack 31 has a tendency to move away from the injection device 40 in the first direction X, that is, a tendency to return the rack 31 to the original position. For example, the second return elastic means 33 is arranged on the side of the rack 31 remote from the injection device 40 and is connected to the end of the rack 31 remote from the injection device 40.

In some embodiments, after the tissue gel application operation is completed, the button 53 may be pressed to move the locking member 53 from the third position toward the fourth position, the locking member 51 is disengaged from the rack 31, and the rack 31 is moved away from the injection device 40 in the first direction X by the second return elastic means 33 to return to the original position.

In some embodiments, as shown in fig. 1 to 5, the applicator body 10 further includes a cover 13, and the cover 13 can be snapped on the applicator body 11 to close the receiving cavity 111. The cover 13 is removably or pivotally connected to the applicator body 11. The cover 13 can be removed or opened to facilitate the installation and removal of the injection device 40 into and from the tissue gel applicator, thereby facilitating the replacement of the injection device 40.

In some embodiments, the injection device 40, for example a dual syringe, as shown in fig. 1-5, the injection device 40 includes a first syringe 41 and a second syringe 42 disposed in parallel with each other, the first syringe and the second syringe being configured to receive a first liquid and a second liquid, respectively, for example two different hydrogel collagen liquids, which when mixed, form a hydrogel.

Each of the first syringe 41 and the second syringe 42 includes a tube 401 and a plunger 402. The tube 401 is used for containing hydrogel stock solution, at least one part of the push rod 402 is arranged in the tube, and the end part of the push rod 402 close to the tube is provided with a piston 4021; when the plunger 402 moves toward the tube 401, the piston 4021 pushes the hydrogel stock solution in the tube 401 to be discharged from the outlet of the tube 401.

The injection device 40 further comprises a mounting bracket 43, a push plate 44 and a mixing head 45. The fixing frame 43 is configured to fix the tube 401 of the first syringe 41 and the second syringe 42 so that they are fixed side by side, as shown in fig. 5, the fixing frame 43 may be a separate structure, and in other embodiments, the fixing frame 43 may also be an integral structure.

The push plate 44 is connected with the ends of the push rods 402 of the first syringe 41 and the second syringe 42 away from the tube 401, and is configured to synchronously push the push rods 402 of the first syringe 41 and the second syringe 42 to move towards the tube 401, so that the first liquid and the second liquid in the first syringe 41 and the second syringe 42 are synchronously output.

The mixing nozzle 45 is connected to the tubular bodies 401 of the first syringe 41 and the second syringe 42, and configured to mix and spray the first liquid and the second liquid for mist coating.

In some embodiments, as shown in fig. 1-5, the injection device 40 further includes an adapter 46 and a jet tube 47.

The adapter 46 is connected to the tubes 401 of the first syringe 41 and the second syringe 41, and specifically connected to the outlets of the tubes 401 of the first syringe 41 and the second syringe 41 through connectors.

The injection pipe 47 is disposed on a side of the adapter 46 away from the first injector 41 and the second injector 42, connected to the adapter 46, and configured to transmit the first liquid and the second liquid, and the injection pipe 47 is provided with, for example, two pipes for transmitting the first liquid and the second liquid, respectively. The ejection tube 47 is elongate and the ejection device comprising the ejection tube 47 is suitable for use in the case of laparoscopic application of hydrogels, in other cases the ejection tube 47 may be omitted.

The mixing nozzle 45 is arranged on one side of the injection pipe 47, which is far away from the adapter 46, and is connected with the injection pipe 47.

It will be appreciated by those skilled in the art that the injection device 40 of the foregoing embodiments is illustrated as a dual syringe, and in other embodiments, the injection device may be other syringes.

Finally, it should be noted that: the embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The system or the device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The above examples are only intended to illustrate the technical solutions of the present disclosure, not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should 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 disclosure.

Claims (11)

1. A tissue gel applicator, comprising:

an applicator body comprising:

an applicator body having a receiving cavity configured to receive a portion of an injection device;

a stationary handle portion extending from the applicator body;

a drive handle portion pivotally connected to the applicator body; and

a transmission assembly arranged in the accommodating cavity and driven by the driving handle part,

during rotation of the drive handle portion adjacent the fixed handle portion, the drive assembly pushes against the injection device to complete application of tissue gel.

2. The tissue gel applicator of claim 1, wherein the transmission assembly comprises:

a rack configured to move in a first direction in the accommodating chamber; and

a push injection plate fixedly connected with one end of the rack and configured to push the injection device,

the end of the drive handle portion adjacent the applicator body is provided with a catch configured to engage with the teeth of the rack,

in the process that the driving handle part rotates to be close to the fixed handle part, the buckling piece pushes the rack to move towards the injection device along the first direction, so that the injection plate pushes the injection device.

3. The tissue glue applicator of claim 2, wherein the tissue glue applicator further comprises:

a first return elastic means connected to the driving handle portion so that the driving handle portion has a tendency to return to an initial position,

and responding to the initial position of the driving handle part, the buckling part is separated from the rack, and the buckling part is buckled with the teeth of the rack in the process that the driving handle part rotates from the initial position to be close to the fixed handle part.

4. The tissue gel applicator of claim 2 or 3, wherein the catch is configured to be movable relative to the end of the drive handle portion proximate the applicator body between a first position and a second position, the catch being configured to engage with the teeth of the rack in response to the catch being in the first position, the catch being configured to disengage from the rack in response to the catch being in the second position,

the tissue glue applicator further comprises a first elastic component connected with the fastener, so that the fastener has a tendency to be located at a first position.

5. The tissue glue applicator of claim 2, wherein the tissue applicator further comprises:

a locking assembly configured to engage the rack and prevent the rack from moving away from the injection device in a first direction.

6. The tissue gel applicator of claim 5, wherein the locking assembly comprises:

a latch movable between a third position and a fourth position, configured to engage the teeth of the rack, the latch configured to engage the teeth of the rack in response to the latch being in the third position, preventing the rack from moving away from the injection device in the first direction, the latch disengaging the rack in response to the latch being in the fourth position;

a second elastic member connected with the latch member such that the latch member has a tendency to be located at a third position.

7. The tissue gel applicator of claim 6, wherein the locking assembly further comprises:

a button disposed on the applicator body, the latch switching from the third position to a fourth position in response to the button being pressed.

8. The tissue glue applicator according to any one of claims 2 or 3, wherein the transmission assembly further comprises:

second return resilient means connected to the rack such that the rack has a tendency to move away from the injection device in a first direction.

9. The tissue gel applicator of any one of claims 1-3, wherein the applicator body further comprises:

a cover configured to be snap-fitted on the applicator body to close the accommodation chamber,

the cover is removably or pivotally connected to the applicator body.

10. The tissue glue applicator according to any one of claims 1-3, wherein the injection device comprises:

a first syringe and a second syringe disposed in parallel with one another, the first syringe and the second syringe configured to contain a first liquid and a second liquid, respectively, each of the first syringe and the second syringe comprising:

a pipe body;

the push rod is at least partially arranged in the tube body, and a piston is arranged at the end part of the push rod close to the tube body;

a holder configured to hold the tubes of the first and second syringes;

the push plate is connected with the ends, away from the tube body, of the push rods of the first syringe and the second syringe and is configured to synchronously push the push rods of the first syringe and the second syringe to move towards the tube body; and

and a mixing nozzle connected to the tube bodies of the first and second syringes, and configured to mix and discharge the first and second liquids.

11. The tissue gel applicator of claim 10, wherein the injection device further comprises:

the adapter is connected with the tube bodies of the first syringe and the second syringe; and

an injection tube disposed on a side of the adapter remote from the first and second injectors, connected to the adapter, and configured to transfer the first and second liquids,

the mixed shower nozzle sets up the injection pipe is kept away from one side of adapter, with the injection pipe is connected.

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