CN219354278U - Loading device for implants - Google Patents

Abstract

The utility model relates to a loading device for an implant, comprising: the loading groove is opened at the upper end, the longitudinal section of the loading groove comprises a trapezoid structure, a left inclined wall is arranged, and a first communication hole is formed in the left inclined wall; and the first sealing joint is connected with the left inclined wall and is communicated with the inside of the loading groove through the first communication hole. The utility model can greatly reduce the air bubble quantity generated in the implantation operation process due to the air entering of the conveyor in the loading process of the implant, prevent the generation of air embolism and reduce the operation risk of patients.

Description

Loading device for implants

Technical Field

The utility model relates to the field of matched equipment for implanting medical instruments, in particular to a loading device for an implant.

Background

Implants implanted in humans using interventional procedures, such as mitral valves, often have residues such as glutaraldehyde or the like thereon after the mitral valve has been manufactured. Therefore, the implant is required to be cleaned before the operation, and the implant is loaded into the conveying catheter of the conveyor after the cleaning is finished and then conveyed to the target position of the human body, so that the interventional therapy operation is finished.

Current implants expose the implant and the conveyor to air during loading, thereby allowing air to enter the conveyor. In the implantation process of the implant, a large amount of bubbles can be generated to cause air embolism, so that the operation risk of a patient is increased, and life danger can be caused in serious cases.

Disclosure of Invention

Based on this, it is necessary to provide a loading device for an implant, which comprises: the loading groove is opened at the upper end, the longitudinal section of the loading groove comprises a trapezoid structure, a left inclined wall is arranged, and a first communication hole is formed in the left inclined wall; and the first sealing joint is connected with the left inclined wall and is communicated with the inside of the loading groove through the first communication hole.

Optionally, the first sealing joint comprises a fixing ring, a fastening nut and a sealing assembly; the fixing ring is connected with the left inclined wall, and the fastening nut is connected with the fixing ring; the sealing component is arranged in a cavity formed by the fixing ring and the fastening nut.

Optionally, the fastening nut is ladder tube-shape, including near-end bench and distal end bench that connects gradually, near-end bench periphery is provided with external screw thread structure.

Optionally, the terminal surface of fastening nut proximal end side still is provided with a plurality of first connecting pieces, the equipartition is provided with a plurality of second connecting holes around the first connecting hole, still be provided with a plurality of third connecting holes on the solid fixed ring, a plurality of fasteners pass in proper order behind second connecting hole, third connecting hole, the first connecting piece realize inclined wall, solid fixed ring and fastening nut's connection.

Optionally, a first annular protrusion is further disposed on a side of the fixing ring facing away from the loading groove; the fastening nut faces the loading groove and is also provided with a second annular bulge inside the loading groove; the sealing assembly comprises a first sealing element and a second sealing element, wherein one side of the first sealing element is provided with a first annular groove matched with the first annular bulge, and the other side of the first sealing element is provided with a plurality of convex blocks uniformly distributed along the circumferential direction; one side of the second sealing piece is provided with a plurality of grooves matched with the convex blocks, and the other side of the second sealing piece is provided with an annular stepped groove matched with the second annular convex blocks.

Optionally, the first sealing joint further comprises a sealing nut, and the sealing nut is provided with a thread structure matched with the fastening nut for use.

Optionally, the included angle between the plane of the left inclined wall and the vertical plane is 30-70 degrees.

Optionally, a loading solution is placed in the loading groove, and a refrigerant is further added in the loading solution.

Optionally, the loading slot further includes a right vertical wall opposite to the left inclined wall, and a second communication hole is formed in the right vertical wall; the right vertical wall is further provided with a second sealing joint communicated with the second communication hole.

Optionally, the second sealing joint comprises a slotted fastening nut provided with a receiving slot through its outer and inner walls.

The technical scheme of the utility model has the following beneficial effects:

1. the air bubble amount of the implant in the implantation process can be greatly reduced, the operation risk is reduced, and the generation of air embolism is prevented. Since the implant of the present utility model is vented from the conveyor prior to loading. The loading process is carried out under the liquid level of the loading solution, namely the loading is realized in a liquid sealing environment, and the air is further exhausted for a plurality of times after the loading is finished, so that the number of bubbles generated by the implant in the implantation process is greatly reduced, and the effect is very obvious in an ultrasonic image comparison chart.

2. The loading groove is made of medical-grade polyvinyl chloride PVC, and the medical-grade polyvinyl chloride PVC is nontoxic and harmless, rust-free, ensures the safety of the material, and solves the safety problem of the loading groove

3. Since the first sealing joint is provided on the left inclined wall of the loading slot, this allows the conveyor to be tilted into the loading slot at a suitable angle. Thus, when the implant is loaded, the implantation form of the valve can be clearly observed, and the implant is convenient to load.

4. The temperature of the loading solution is adjusted by adding a refrigerant into the loading solution, so that the implant is subjected to memory deformation at the temperature to shrink, and loading of the implant is further facilitated by controlling the temperature of the loading solution.

5. The seal assembly of the present utility model includes a first seal and a second seal that are used in combination to achieve a dual seal. In addition, the sealing component is arranged in the sealing cavity which is formed by the fixing ring and the inner cavity of the fastening nut and is provided with the protruding structures at the two ends, so that the sealing component can be extruded, and meanwhile, the stable positioning of the sealing component is realized, and the sealing effect is further enhanced.

6. Optionally, a first sealing joint and a second sealing joint are arranged on two sides of the loading groove. The first sealing joint is used for realizing loading of the implant in the conveyor, and the second sealing joint is used for placing the conveyor and preventing the conveyor from falling off due to long-term placement in the first sealing joint. And be provided with the holding tank on the fastening nut of second sealing joint, can avoid the conveyer to be in unsettled state in placing the in-process, further prevent that the conveyer from dropping.

Drawings

Fig. 1 is an overall construction view of a loading device in a first embodiment;

fig. 2 is an enlarged structural view of the first sealing joint of fig. 1.

FIG. 3 is a schematic view showing the overall structure of the loading device in the first embodiment;

fig. 4 is an overall construction view of the loading device after the conveyor in the first embodiment is taken out;

fig. 5 is an exploded structural view of the first sealing joint in the first embodiment.

Fig. 6 is a structural view of the loading slot in the first embodiment.

Fig. 7 is a perspective view of the fixing ring in the first embodiment.

Fig. 8 is a cross-sectional view of the fixing ring in the first embodiment.

Fig. 9 is a cross-sectional view of the fastening nut in the first embodiment.

Fig. 10 is a perspective view of the fastening nut in the first embodiment.

Fig. 11 is a perspective view of the first seal member in the first embodiment.

Fig. 12 is a cross-sectional view of the second seal in the first embodiment.

Fig. 13 is a bottom view of the second seal in the first embodiment.

Fig. 14 is a perspective view of the sealing nut in the first embodiment.

Fig. 15 is a cross-sectional view of the sealing nut in the first embodiment.

Fig. 16 is an overall configuration diagram of the loading device of the second embodiment.

Fig. 17 is a cross-sectional view of a slotted fastening nut in a second embodiment.

Fig. 18 is a perspective view of a slotted fastening nut in the second embodiment.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.

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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

In the field of interventional medical devices, "distal" is defined as the end of the procedure that is distal to the operator, and "proximal" is defined as the end of the procedure that is proximal to the operator. "axial" refers to a direction parallel to the line connecting the distal center and the proximal center of the medical device, and "radial" refers to a direction perpendicular to the axial direction.

First embodiment

Referring to fig. 1-6, the present embodiment provides a loading device 100 for an implant 4, comprising: the loading groove 1, the upper end of the loading groove 1 is opened, the longitudinal section of the loading groove 1 comprises a trapezoid structure and a left inclined wall 14, and a first communication hole 11 is formed in the left inclined wall 14; a first sealing joint 3, the first sealing joint 3 being connected to the left inclined wall 14 and having an internal passage, the internal passage communicating with the loading slot 1 via the first communication hole 11.

The conveyor 2 includes a conveying sheath 21, and the distal end of the conveying sheath 21 passes through the first through hole 11 into the loading slot 1 from the outside of the loading slot 1 after passing through the internal passage of the first sealing joint 3. The implant 4 may be a heart valve such as an aortic valve, a suture-free valve, a pulmonary valve, a tricuspid valve, or the like. Alternatively, the implant 4 is not limited to a heart valve only, but may be a vascular stent, such as a bare vascular stent or a stent covered by a vascular graft; alternatively, the implant may be an occluder, such as a left atrial appendage occluder or a vascular or tissue notch occluder; in addition, filter structures such as vena cava filters are also possible. The structural portion of the implant is not particularly limited, and any medical device that is implanted in a human body by an interventional therapy method may be used as the implant 4. A loading solution 6 is placed in the loading tank 1, and the loading solution 6 is used for realizing the sealing of the whole loading process; alternatively, the loading solution 6 may also be used to clean, disinfect, etc. the implant.

Alternatively, considering that the implant is typically made of a deformable memory metal alloy, it is desirable that the implant 4 be in a contracted state when loaded into the delivery sheath and be restored to an expanded state after the implant is released for delivery to the target site of the body via the delivery device. Thus, to facilitate loading of the implant 4 into the delivery sheath 21 within the loading channel 1, a refrigerant 5 is added to the loading solution 6 to regulate the temperature of the loading solution 6, thereby making the implant 4 more deformable and collapsible for easy loading.

Referring to fig. 6, the loading slot 1 has a frame structure with a trapezoidal upper end opening, and is hollow to form a receiving cavity. Specifically, the loading slot 1 includes a bottom plate 13, and left, right, and front inclined walls 14, 12, 15, and 16 connected to four sides of the bottom plate 13. The angle between the plane of the left inclined wall 14 and the vertical plane is 30-70 degrees, preferably 50 degrees. The left inclined wall 14 is provided with a first communication hole 11, and the first communication hole 11 is provided in a position of the left inclined wall 14 near the bottom plate 13. A plurality of second connecting holes 17 are uniformly distributed around the first communicating hole 11, and the number of the second connecting holes 17 can be 3, 4 or 5, and are uniformly distributed relative to the central symmetry axis of the first communicating hole 11. The trapezoidal shape of the loading slot 1, specifically, means that a cross section along the length direction thereof is a trapezoidal structure. The loading groove 1 is generally formed by bonding medical PVC materials after cutting. Medical polyvinyl chloride PVC is nontoxic and harmless, and is rust-free, so that the safety of the material is ensured.

Referring to fig. 1-2, 5, the first sealing joint 3 comprises a stationary ring 31, a fastening nut 34 and a sealing assembly 33; the seal assembly 33 includes a first seal 331 and a second seal 332. The fixing ring 31 has a first central through hole and the fastening nut has a second central through hole; the fixing ring 31 is connected with the left inclined wall 14, the fastening nut 34 is connected with the fixing ring 31, and the first central through hole and the second central through hole are aligned and communicated to form the internal channel; the sealing assembly 33 is disposed in a cavity formed by the fixing ring 31 and the fastening nut 34. Wherein, one end of the cavity is provided with a first annular protrusion 314 formed by a part of the surface of the fixing ring 31 facing the fastening nut 34, and the other end is provided with a second annular protrusion 346 formed by a part of the surface of the fastening nut 34 facing the fixing ring 31.

For the fixing ring 31, please refer to fig. 7-8 in detail. The fixing ring 31 is disc-shaped and includes a fixing ring body 312, and a first central through hole is further provided in the fixing ring body 312. An annular sealing groove 313 is arranged at one end surface of the fixing ring connected with the left inclined wall 14, a first annular protrusion 314 is arranged at the other end surface, and a sealing element 32 is arranged in the annular sealing groove 313. The sealing member 32 is an annular sealing ring or an annular gasket, and functions to seal the connection surface between the fixing ring 31 and the left inclined wall 14, and prevent the loading solution from leaking. The first annular protrusion 314 is coaxially disposed with the central through hole, and the inner wall of the annular protrusion 314 and the first central through hole form a stepped through hole of the fixing ring 31. A plurality of third connecting holes 311 are uniformly distributed on the periphery of the annular protrusion 314, and the number of the third connecting holes 311 is equal to that of the second connecting holes 17 and matched with the second connecting holes.

For the fastening nut 34, see in particular fig. 9-10. The fastening nut 34 is in a ladder-shaped overall and comprises a proximal ladder section 341 and a distal ladder section 342 which are sequentially connected, wherein an external thread structure 348 is arranged on the periphery of the proximal ladder section 341. The end face on the proximal end side of the fastening nut 34 is provided with a plurality of first connecting pieces 347, the number of the first connecting pieces 347 is equal to the number of the second connecting holes 17 and the two are used in cooperation. The first connecting member 347 may be a connecting hole, a connecting slot or other structures. The fixing ring 31 has a first center through hole including a first stepped hole 345 and a second stepped hole 344 provided in this order, the first stepped hole 345 being provided near the distal end side. The first stepped hole 345 has a larger diameter than the second stepped hole 344, and a second annular protrusion 346 is provided at a stepped surface formed by the first stepped hole 345 and the second stepped hole 344. Optionally, the fastening nut 34 further includes a third stepped hole 343 provided near the proximal end side in connection with the second stepped hole 344. The first stepped hole 345, the second stepped hole 344, and the third stepped hole 343 are sequentially connected to form a first central through hole of the fastening nut. To facilitate handling during actual use, a plurality of striations are also provided on the outer periphery of the distal stepped segment 342 to increase friction and facilitate user tightening of the fastening nut 34.

The left inclined wall 14 of the loading slot 1 is screwed with the fixing ring 31 and the fastening nut 34. A plurality of fasteners sequentially pass through the second connecting hole 17, the third connecting hole 311 and the first connecting piece 347 to realize threaded connection of the inclined wall 14, the fixing ring 32 and the fastening nut 34. Specifically, the fastener is a self-tapping screw, and the self-tapping screw sequentially passes through the second connecting hole 17 and the third connecting hole 311 and then is screwed into the first connecting piece 347 to form threads on the hole wall of the first connecting piece 347, so that the two threads are connected, and the fixed ring 32 and the fastening nut 34 are simultaneously connected on the inclined wall 14 of the loading groove 1.

Referring to fig. 11, the first seal 331 includes a first seal body 3313 having a disk shape. One side of the first sealing body 3313 is provided with a first annular groove 3311 matched with the first annular protrusion 314, and the other side is provided with a plurality of protrusions 3312 uniformly distributed along the circumferential direction; the protruding blocks 3312 are arc protruding blocks uniformly distributed along the circumferential direction, and the outer side surfaces of the protruding blocks are flush with the outer circumferential surface of the first sealing member body 3313. At the center of the disk formed by the first seal body 3313, two cross-shaped cuts (not shown) are provided which are perpendicular to each other, and the center of the cross-shape coincides with the center of the disk.

Referring to fig. 12-13, the second seal member 332 is also disc-shaped in its entirety, and includes a second seal member body 3322, and a stepped hole is provided at one end surface of the second seal member body 3322 to form an annular stepped groove 3325, and a plurality of grooves 3321 are provided at the other end surface. The grooves 3321 are circular arc grooves, the number of which is equal to that of the protrusions 3313. The recess 3321 cooperates with the boss 3312 to effect connection of the first seal 331 to the second seal 332. Wherein the second sealing member body 3322 is provided with a central hole 3324, and the center of the central hole 3324 is aligned with the center of the disk formed by the first sealing member body 3313.

Referring to fig. 1-2 and 5, the first seal 331 and the second seal 332 cooperate to form a seal assembly 33. The sealing assembly 33 is disposed in a cavity formed by the fastening ring 31 and the fastening nut 34 connected to each other. The cavity is provided with a first annular projection 314 formed by the securing ring 31 at one end and a second annular projection 346 formed by the fastening nut 34 at the other end. When the seal assembly 33 is installed in the cavity, the second annular projection 346 mates with the annular stepped groove 3325 of the second seal 332 and the first annular projection 314 mates with the annular recess 3311 of the first seal. The height of the sealing component 33 is larger than the height of the cavity, after the sealing component 33 is installed in the cavity, when the fastening nut 34 and the fixing ring 31 are connected through a fastening piece such as a self-tapping screw, the sealing component 33 can be extruded at two ends of the cavity, so that the groove structures at two ends of the sealing component are matched with the protruding structures of the cavity, the sealing component 33 is well positioned in the cavity, and the sealing effect is guaranteed. In addition, the first seal 331 and the second seal 332 may be made of silicone material or other materials.

Referring to fig. 5, 16-17, the sealing joint 3 further comprises a sealing nut 35, the sealing nut 35 being provided with an internal thread structure 351 for cooperation with an external thread structure 348 of the sealing nut 34, whereby the sealing nut 35 is in threaded connection with the fastening nut 34. Referring to fig. 4, after the implant is loaded into the delivery device 2, the delivery sheath 21 needs to be removed from the first sealing adapter 3. The first sealing joint 3 has an internal passage connected to the first communication hole 11, and sealing of the internal passage is achieved by the sealing assembly 33. The seal assembly 33 is composed of a first seal 331 with a cross-shaped cutout and a first seal 332 with a central through hole 3324. When the delivery sheath 21 passes through the sealing assembly 33, the cross-shaped cut and the central through hole 3324 sequentially pass through, wherein the cross-shaped cut and the central through hole 3324 press the outer circumferential surface of the delivery sheath 21 due to elastic restoring force to realize sealing. When the delivery sheath is removed from the primary sealing adapter 3, the loading solution 6 in the loading slot 1 may leak through the central through hole 3324 and out of the loading slot 1 after the cross-cut. Therefore, in order to prevent this leakage, a seal nut 35 is provided at the proximal end face of the seal nut 34, and the proximal end face of the fastening nut 34 is blocked by the seal nut 35, thereby preventing the leakage of the loading solution.

The specific loading procedure for the implant is described below:

1. pretreatment of the implant. The implant is washed and sterilized several times with alcohol, etc. before use. After cleaning and sterilizing, the implant is put into a dialysis bag and then packaged and sealed. After packaging, sterilizing by using ethylene oxide, and standing for a plurality of days after sterilizing, wherein the implant is ready for use.

2. The conveyor is exhausted. And the air in the conveyor is discharged by the method of injecting water into the conveyor. The water injection and exhaust process is repeated for a plurality of times to ensure the exhaust effect of the conveyor.

3. The conveyor is installed. After a certain amount of loading solution is injected into the loading groove, the conveyor after the exhaust is completed is inserted into the loading groove from outside to inside through the first sealing joint, and the conveying sheath pipe of the conveyor is ensured to expose the liquid level of the loading solution after the insertion is completed.

4. Loading and venting of the implant. The implant prepared in step 1 is connected distally to the sheath core of the delivery device or a similar structure, and after connection, the entire delivery device is moved proximally so that the distal end of the delivery sheath and the entire implant are positioned below the level of the loading solution. However, the delivery sheath is held stationary and the sheath core or similar structure is pulled proximally to allow the implant to be compressively deformed into the delivery sheath. After the implant is loaded into the conveyor, the conveyor is exhausted by the injector, and the exhaust is repeated for a plurality of times until no bubble in the conveying sheath tube on the conveyor emerges, namely the exhaust is completed. After the exhaust is completed, the conveyor is placed still, and the valve implantation is waited for, namely the whole using process is completed.

Second embodiment

Referring to fig. 18, a loading slot apparatus 100a provided in this embodiment has a similar structure to that of the loading slot apparatus of the first embodiment, and includes a loading slot 10 and a first sealing joint 30 provided on a left inclined wall of the loading slot, which is different from that of the first embodiment in that a second sealing joint is provided in addition to the first sealing joint 30. Specifically, the loading slot 10 further includes a right vertical wall disposed opposite to the left inclined wall, and a second communication hole 101 is formed in the right vertical wall; the right vertical wall is further provided with a second sealing joint 40 communicating with the second communication hole 101.

The second sealing joint 40 is similar in structure to the first sealing joint 3 of the first embodiment, includes a retaining ring, a slotted fastening nut, and a sealing assembly, and has an internal passageway; the seal assembly includes a first seal and a second seal. The fixed ring is connected with the right vertical wall, the fastening nut is connected with the fixed ring, and the sealing component is arranged in a sealing cavity formed by the fixed ring and the fastening nut. In addition, the second sealing joint 40 also includes a sealing nut provided with an internal thread structure for cooperation with the external thread structure of the slotted fastening nut, so that the sealing nut is screwed with the fastening nut. The first sealing joint 40 in the present embodiment is different from the first sealing joint 3 in the first embodiment in that a slotted fastening nut 401 is provided.

Specifically, the slotted fastening nut 401 in the present embodiment is different from the fastening nut 34 in the first embodiment in that the slotted fastening nut 401 is further provided with a receiving slot 4011 penetrating the outer wall and the inner wall thereof. Specifically, referring to fig. 17 to 18, the receiving groove 4011 has a start end located near the center of the distal step in the axial direction and an end located on one side end face of the proximal step. The receiving groove 4011 extends toward the central axis until the outer wall and the outer wall of the slotted fastening nut 401 are penetrated, i.e., the receiving groove 4011 communicates with the first central through hole.

Referring to fig. 16, a second sealing joint 40 having a similar structure to the first sealing joint 3 is further provided on the right vertical wall of the loading groove 10, and a slotted fastening nut 401 of the second sealing joint 40 has a receiving groove 4011. Thus, after the implant is smoothly loaded on the carrier 20, the carrier 20 may be taken out of the first sealing adapter 3 and then introduced into the loading slot 10 through the internal passage of the second sealing adapter 40. Since the second sealing joint 40 is provided on the right vertical wall of the loading slot 10, the conveyor 20 inserted into the second sealing joint 40 does not easily fall off with respect to the conveyor inserted into the first sealing joint. Further, since the slotted fastening nut 401 is provided with the accommodating groove 4011, and the opening of the accommodating groove 4011 is vertically downward after the slotted fastening nut is installed, the delivery sheath 201 is accommodated in the accommodating groove 4011 after the delivery sheath 201 is inserted into the second sealing joint 40, so that the angle between the central axis of the delivery sheath 201 and the horizontal line can be increased, and the proximal end of the delivery sheath 20 can be abutted against the ground or the table top, thereby avoiding the delivery sheath 20 from being in a suspended state all the time after the delivery sheath 20 is inserted into the second sealing joint 40, and avoiding the delivery sheath 20 from falling off from the second sealing joint 40. Thus, there is no fear that the conveyor 20 will come off even if left for a long time.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A loading device for an implant, comprising:

the loading groove (1), the upper end of the loading groove (1) is opened, the longitudinal section of the loading groove comprises a trapezoid structure, a left inclined wall (14) is arranged, and a first communication hole (11) is formed in the left inclined wall (14);

and a first sealing joint (3), wherein the first sealing joint (3) is connected to the left inclined wall and is communicated with the inside of the loading groove (1) through the first communication hole (11).

2. Loading device according to claim 1, wherein the first sealing joint (3) comprises a securing ring (31), a fastening nut (34) and a sealing assembly (33); the fixing ring (31) is connected with the left inclined wall (14), and the fastening nut (34) is connected with the fixing ring (31); the sealing assembly (33) is arranged in a cavity formed by the fixing ring (31) and the fastening nut (34).

3. Loading device according to claim 2, wherein the fastening nut (34) is stepped cylindrical and comprises a proximal stepped section (341) and a distal stepped section (342) connected in sequence, the outer periphery of the proximal stepped section (341) being provided with an external thread structure (348).

4. Loading device according to claim 2, characterized in that the end face of the proximal side of the fastening nut (34) is further provided with a plurality of first connecting members (347), a plurality of second connecting holes (17) are uniformly distributed around the first connecting hole (11), a plurality of third connecting holes (311) are further provided on the fixing ring (31), and a plurality of fasteners sequentially penetrate through the second connecting holes (17), the third connecting holes (311) and the first connecting members (347) to realize the connection of the inclined wall (14), the fixing ring (31) and the fastening nut (34).

5. Loading device according to claim 2, characterized in that the side of the securing ring (31) facing away from the loading slot is further provided with a first annular projection (314); the fastening nut (34) faces the loading slot and is provided with a second annular protrusion (346) inside; the sealing assembly (33) comprises a first sealing piece (331) and a second sealing piece (332), wherein one side of the first sealing piece (331) is provided with a first annular groove (3311) matched with the first annular bulge, and the other side of the first sealing piece is provided with a plurality of bumps (3312) uniformly distributed along the circumferential direction; the second seal (332) is provided with a plurality of grooves (3321) on one side which are matched with the convex blocks (3312), and an annular stepped groove (3325) on the other side which is matched with the second annular convex block (346).

6. A loading device according to claim 3, wherein the first sealing joint (3) further comprises a sealing nut (35), the sealing nut (35) being provided with a screw thread structure (351) for use in cooperation with the fastening nut (34).

7. Loading device according to any one of claims 1-6, wherein the left inclined wall (14) is at an angle of 30-70 degrees to the vertical plane.

8. Loading device according to any of claims 1-6, characterized in that a loading solution (6) is placed in the loading tank (1), which loading solution is further supplemented with a refrigerant (5).

9. Loading device according to any one of claims 1-6, characterized in that the loading slot (1) further comprises a right vertical wall (15) arranged opposite the left inclined wall (14), a second communication hole being provided in the right vertical wall (15); the right vertical wall (15) is further provided with a second sealing joint (40) in communication with the second communication hole.

10. The loading device according to claim 9, wherein the second sealing joint (40) comprises a slotted fastening nut (401), the slotted fastening nut (401) being provided with a receiving slot (4011) through its outer and inner walls.