CN219940906U - Balloon pressurizing device - Google Patents

Abstract

The utility model belongs to the technical field of medical appliances, and particularly relates to a balloon pressurizing device. A balloon pressurizing device comprises a sleeve, a pushing rod, a pressing block and an inner rod; the pushing rod is arranged in the sleeve, the pushing rod is hollow, the inner wall of the distal end of the pushing rod is provided with an internal thread, and the outer wall of the pushing rod is provided with a plurality of outer blocking rings; the inner wall of the pressing block is provided with a plurality of inner blocking rings, the pressing block stretches into the inner part of the proximal end of the sleeve, and the inner blocking rings can be spliced with the outer blocking rings; the inner rod is arranged in the pushing rod, the far end and the near end of the inner rod extend out of the pushing rod respectively, the outer wall of the far end of the inner rod is provided with external threads, the external threads of the inner rod are in threaded connection with the internal threads of the pushing rod, and the near end of the inner rod extends out of the sleeve. According to the utility model, through the split structure, quick adjustment and spinning adjustment are respectively realized, the locking between the push rod and the pressing block in the mode does not need to consider the extrusion force, and any abrasion phenomenon can not occur.

Description

Balloon pressurizing device

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to a balloon pressurizing device.

Background

For the delivery of the balloon expandable artificial valve or stent, the valve or stent needs to be pre-pressed and held at one end of an unpressurized balloon, after the balloon is delivered to a designated position by a conveyor, physiological saline or physiological saline with developer is pumped into the balloon by an external pressurizing pump, so that the balloon is gradually inflated, and the valve or stent is driven to expand in the inflation process of the balloon.

The balloon-expandable prosthetic valve or stent is generally made of cobalt-chromium material and has high hardness, on one hand, high pressure is required to fill the prosthetic valve or stent, such as 300-400mmHg or even higher, and on the other hand, in order to ensure the effectiveness of the prosthetic valve or stent, the prosthetic valve or stent needs to be expanded according to a certain speed and sequence, that is, the filling speed of the balloon cannot be too high, and sometimes the balloon is broken due to the instant pressure increase, so that the operation fails. In addition, the precise quantification of the fluid injected is also required during surgery, and the conventional balloon pressurizing device cannot meet the requirement for precision.

Chinese patent CN114948366a discloses a balloon pressurizing device, which is to realize rapid adjustment (direct push-pull) and spinning adjustment of a push rod, wherein an external thread is provided on the outer side of the push rod, and the push rod is extruded and adjusted by a pressing block provided with a thread end, when the pressing block does not extrude the push rod, the push rod can be rapidly adjusted, and when the pressing block extrudes the push rod, the thread end is meshed with the external thread, so as to realize spinning adjustment of the push rod. The setting has the unstable scheduling problem of locking, because press the briquetting when the extrusion push rod, still need guarantee that the push rod can press the briquetting rotation relatively (i.e. screw thread meshing spinning adjustment), just limited the extrusion force of push rod to the push rod this moment, the extrusion force is too little, can't firm locking push rod, and the extrusion force is too big, has just caused the too big pressure between screw thread end and the external screw thread, causes the frictional force too big and the unable spinning adjustment of push rod, especially in the extrusion piece repetitious usage, after wearing and tearing, will be unstable more between its push rod and the push rod.

Disclosure of Invention

The utility model aims at solving the technical problems that in the existing balloon pressurizing device, when a pushing rod is pressed by a pressing block, the pushing rod is easily and stably locked due to too small pressing force or the pushing rod cannot be adjusted by rotary spinning and abrasion occurs due to too large pressing force.

In order to solve the technical problems, one aspect of the present utility model provides a balloon pressurizing device, which comprises a sleeve, a push rod and a pressing block;

the pushing rod is arranged in the sleeve, the pushing rod is hollow, the inner wall of the distal end of the pushing rod is provided with an internal thread, and the outer wall of the pushing rod is provided with a plurality of outer blocking rings;

the inner wall of the pressing block is provided with a plurality of inner blocking rings, the pressing block stretches into the inner part of the proximal end of the sleeve, and the inner blocking rings can be spliced with the outer blocking rings;

the balloon inflation device further comprises:

the inner rod is arranged in the pushing rod, the far end and the near end of the inner rod extend out of the pushing rod respectively, an external thread is arranged on the outer wall of the far end of the inner rod, the external thread of the inner rod is in threaded connection with the internal thread of the pushing rod, and the near end of the inner rod extends out of the sleeve.

Optionally, in the balloon pressurizing device as described above, the outer side of the outer blocking ring is a tip structure, and the inner side of the inner blocking ring is a tip structure.

Optionally, in the balloon pressurizing device as described above, a pressing block arcuate groove is provided on a side of the pressing block facing the pushing rod, the inner blocking ring is provided in the pressing block arcuate groove, and the pressing block arcuate groove is sleeved outside the pushing rod.

Optionally, in the balloon inflation device as described above, the proximal end side and the distal end side of the pressing block have gaps, respectively.

Optionally, in the balloon pressurizing device as described above, the gap is 0.2mm to 0.5mm.

Optionally, in the balloon pressurizing device as described above, a proximal end of the sleeve is provided with a dial block accommodating cavity, and one end of the dial block accommodating cavity is open;

the balloon inflation device further comprises:

the two sides of the shifting block are rotatably connected with the inner side wall of the shifting block accommodating cavity, the bottom of the shifting block is of an eccentric wheel structure, the pressing block is positioned between the shifting block and the pushing rod, and the bottom of the shifting block can press the pressing block so as to enable the inner blocking ring to be inserted into the outer blocking ring.

Optionally, in the balloon inflation device as described above, the balloon inflation device further includes:

and one end of the spring is abutted to the pressing block, and the other end of the spring is abutted to the inner wall of the sleeve.

Optionally, in the balloon inflation device as described above, the balloon inflation device further includes:

the connector is of a hollow structure, the connector is located inside the sleeve, the proximal end of the connector is connected with the distal end of the inner rod in a clamping mode, and the distal end of the connector is connected with the inner wall of the sleeve in a sealing and abutting mode through a sealing gasket.

Optionally, in the balloon pressurizing device as described above, the outer wall of the pushing rod is provided with a guide groove, and the length direction of the guide groove is the axial direction of the pushing rod;

the balloon inflation device further comprises:

the supporting plate is provided with a supporting plate arch-shaped groove, the supporting plate arch-shaped groove supports the pushing rod, guide bars are arranged in the supporting plate arch-shaped groove, the length direction of each guide bar is the axial direction of the pushing rod, and the guide bars are connected with the guide grooves in a sliding mode.

Optionally, in the balloon inflation device as described above, the balloon inflation device further includes:

a sleeve connecting piece, wherein the sleeve connecting piece is arranged on the proximal end side of the sleeve, and the support plate is arranged at the distal end of the sleeve connecting piece;

the support plate extends into the sleeve from the proximal side of the sleeve.

The utility model has the positive progress effects that:

according to the utility model, the original quick adjustment and spinning adjustment between the push rod and the pressing block are improved, namely, the push rod and the pressing block are in threaded connection, and the push rod and the pressing block are in plug-in locking mode, so that the quick adjustment is realized in an unlocking state. Under the locking condition, the inner rod is additionally arranged to be in threaded connection with the pushing rod, and the spinning adjustment purpose is achieved by rotating the inner rod.

According to the utility model, through the split structure, quick adjustment and spinning adjustment are respectively realized, the locking between the push rod and the pressing block in the mode does not need to consider the extrusion force, and any abrasion phenomenon can not occur.

Drawings

The present disclosure will become more apparent with reference to the accompanying drawings. It is to be understood that these drawings are solely for purposes of illustration and are not intended as a definition of the limits of the utility model. In the figure:

FIG. 1 (a) is a perspective view of the present utility model;

FIG. 1 (b) is another angular schematic view of FIG. 1 (a);

FIG. 2 (a) is an exploded view of FIG. 1 (a);

FIG. 2 (b) is another angular schematic view of FIG. 2 (a);

fig. 3 (a) is a front view of fig. 1 (a);

FIG. 3 (b) is an exploded view of FIG. 3 (a);

FIG. 3 (c) is an enlarged view of a portion of FIG. 3 (b);

FIG. 4 (a) is a cross-sectional view of FIG. 3 (a);

FIG. 4 (b) is another cross-sectional view of FIG. 3 (a);

FIG. 4 (c) is an enlarged view of a portion of FIG. 4 (b) at A;

FIG. 4 (d) is an enlarged view of a portion at B of FIG. 4 (B);

FIG. 5 is a schematic view of a structure of the press block of the present utility model;

FIG. 6 is a schematic view of a push rod according to the present utility model;

fig. 7 is a schematic view of a structure of the support plate of the present utility model.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which is to be read in light of the specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.

It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.

In the description of the present utility model, it should be noted that, for the azimuth terms, such as terms "outside," "middle," "inside," "outside," and the like, the azimuth and positional relationships are indicated based on the azimuth or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, but not to indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and should not be construed as limiting the specific protection scope of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such feature, and in the description of the present utility model, the meaning of "a number", "a number" is two or more, unless otherwise specifically defined.

In the description of the present utility model, it should be noted that "distal end" and "proximal end" are used as azimuth terms, which are terms commonly used in the field of interventional medical devices, where "distal end" refers to an end of a balloon inflation device that is away from an operator during a surgical procedure, and "proximal end" refers to an end of a balloon inflation device that is near an operator during a surgical procedure. "axial" refers to a direction parallel to the line connecting the distal center and the proximal center of the balloon inflation device; "radial" refers to a direction perpendicular to the "axial" direction described above.

Referring to fig. 1 (a) to 6, an embodiment of the present utility model provides a balloon pressurizing device including a sleeve 100, a push rod 200, a pressing block 300, and an inner rod 400.

The distal end of the sleeve 100 has a fluid outlet through which the sleeve 100 is connected to the delivery adapter 910. Preferably, the outlet of sleeve 100 may be connected to a conveyor adapter 910 by a conveyor pipe 920. The delivery connector 910 is used to connect to an external delivery device via which connection to the balloon is made.

The push rod 200 is disposed within the sleeve 100, and the proximal end of the push rod 200 may extend beyond the proximal end of the sleeve 100. The push rod 200 is hollow, the inner wall of the distal end of the push rod 200 is provided with an internal thread 210, the outer wall of the push rod 200 is provided with a plurality of outer blocking rings 220, and each outer blocking ring 220 is independently designed.

A plurality of inner blocking rings 310 are provided on the inner wall of the pressing block 300, and each inner blocking ring 310 is independently designed. The pressing block 300 protrudes into the inside of the proximal end of the sleeve 100, and the inner blocking ring 310 may be inserted with the outer blocking ring 220.

The inner rod 400 is disposed in the push rod 200, the distal end and the proximal end of the inner rod 400 respectively extend out of the push rod 200, the outer wall of the distal end of the inner rod 400 is provided with an external thread 410, the external thread 410 of the inner rod 400 is in threaded connection with the internal thread 210 of the push rod 200, and the proximal end of the inner rod 400 extends out of the sleeve 100.

When the utility model is used, the utility model has two modes, namely quick adjustment and spinning adjustment. When the inner and outer blocker rings 310, 220 are not plugged, they are in an unlocked state. In the unlocked state, the inner rod 400 extending from the sleeve 100 drives the push rod 200 to axially move within the sleeve 100. When the inner rod 400 drives the pushing rod 200 to move proximally in the sleeve 100, liquid flows into the sleeve 100 through a liquid outlet at the distal end of the sleeve 100, and a liquid suction process is realized. When the inner rod 400 drives the pushing rod 200 to push distally in the sleeve 100, liquid flows out through the liquid outlet of the sleeve 100, and is driven into the balloon through the conveyor joint 910 to fill the balloon. When the inner blocking ring 310 is inserted into the outer blocking ring 220, the inner blocking ring 310 and the outer blocking ring 220 are not subjected to the rotation and engagement movement function, and a large locking force can be generated between the inner blocking ring 310 and the outer blocking ring 220, so that the inner blocking ring and the outer blocking ring are in a locking state. In the locked state, the push rod 200 cannot be moved, and at this time, the inner rod 400 extending from the sleeve 100 can be rotated in the push rod 200. By rotating the inner rod 400, the inner rod 400 can be rotated and advanced distally to control the speed and pressure of the liquid flowing out through the liquid outlet and to maintain the pressure. The mode of rotary pushing or pushing through threaded connection can realize slow pushing when the pressure of the whole system is large, can keep the pressure, and can not cause the problem of automatic backing after releasing manual pushing force.

The utility model can realize rapid adjustment and spinning adjustment through the split structure, and does not need to consider the extrusion force when the pushing rod and the pressing block are in a locking state, and does not have any abrasion phenomenon.

In some embodiments, referring to fig. 3 (c), the outer side of the outer blocker ring 220 is a tip structure 220a.

Referring to fig. 5, inside of the inner stopper ring 310 is a tip structure 310a. By means of the design, the inner blocking ring 310 and the outer blocking ring 220 can be better inserted into a gap between each other, and the inner blocking ring 310 can be stably clamped with the outer blocking ring 220 when the pushing rod 300 is pressed by the pressing block 300.

In some embodiments, referring to fig. 5, a pressing block arcuate groove 320 is disposed on a side of the pressing block 300 facing the push rod 200, an inner stopper ring 310 is disposed in the pressing block arcuate groove 320, and the pressing block arcuate groove 320 is sleeved outside the push rod 200.

In some embodiments, the end surface of the press block 300 opposite the press block arcuate slot 320 is planar.

In some embodiments, referring to fig. 4 (b) and 4 (c), the proximal and distal sides of the compression block 300 have gaps 330, respectively. By the arrangement of the gap 330, a certain displacement space is provided in the front and back of the pressing block 300, and the damage to the inner blocking ring 310 or the outer blocking ring 220 caused by the fact that the front and back staggering is not possible after the tip structures of the inner blocking ring 310 and the outer blocking ring 220 are contacted is prevented.

In some embodiments, gap 330 is 0.2mm to 0.5mm. The gap 330 between the proximal end side and the distal end side of the pressing block 300 may be adjusted according to actual needs.

In some embodiments, referring to fig. 2 (a) and 2 (b), the proximal end of the sleeve 100 is provided with a dial-receiving cavity 110, with one end of the dial-receiving cavity 110 being open.

Referring to fig. 1 (a) to 3 (b) and 4 (a), the balloon pressurizing device further includes a dial block 500, both sides of the dial block 500 are rotatably connected with the inner sidewall of the dial block accommodating cavity 110, the bottom of the dial block 500 is an eccentric wheel structure 510, the pressing block 300 is located between the dial block 500 and the push rod 200, and the pressing block 300 can be pressed by the bottom of the dial block 500, so that the inner blocking ring 310 is inserted with the outer blocking ring 220.

When the dial block 500 rotates, the bottom of the eccentric wheel structure 510 presses the pressing block 300, and the inner blocking ring 310 of the pressing block 300 is inserted into the outer blocking ring 220. When the dial block 500 is reset, the inner blocking ring 310 of the pressing block 300 is separated from the outer blocking ring 220.

In some embodiments, both sides of the dial 500 are rotatably coupled to the inner sidewall of the dial receiving chamber 110 by a rotation shaft, the axial direction of which coincides with the axial direction of the push rod 200.

In some embodiments, the length of the rotation axis to the bottom of the eccentric structure 510 is greater than the distance of the rotation axis to the plane of the pressing block 300 in the initial state.

In some embodiments, the upper portion of the paddle 500 is a free end with a tab on one side of the free end that can rotate along the outer sidewall of the sleeve 100 to increase the stability of the balloon inflation device.

In some embodiments, referring to fig. 2 (a) and 2 (b), 3 (b), and 4 (a), the balloon inflation device further includes at least one spring 600, one end of the spring 600 abuts against the pressing block 300, and the other end of the spring 600 abuts against the inner wall of the sleeve 100.

In the initial state, the spring 600 is in a natural state or a compressed state, and when the dial block 500 is rotated, the bottom of the eccentric wheel structure 510 presses the pressing block 300, the spring 600 is pressed, and the inner blocking ring 310 of the pressing block 300 is inserted into the outer blocking ring 220. When the dial 500 is reset, the inner resistance ring 310 of the pressing block 300 is separated from the outer resistance ring 220 under the repulsive force of the spring 600.

In some embodiments, a pressing block fixing hole may be formed on an end surface of the pressing block 300 facing the push rod 200, and one end of the spring 600 may extend into the pressing block fixing hole. The spring 600 may be provided in plurality according to an area of one side end surface of the push rod 200 toward the pressing block 300.

In some embodiments, the springs 600 are symmetrically disposed on both radial sides of the push rod 200.

In some embodiments, referring to fig. 2 (a) and 2 (b), 3 (b) and 4 (b), the balloon inflation device further includes a connector 700, the connector 700 is of a hollow structure, the connector 700 is located inside the sleeve 100, the proximal end of the connector 700 is clamped with the distal end of the inner rod 400, and the distal end of the connector 700 is in sealing abutting connection with the inner wall of the sleeve 100 through a sealing gasket.

When the inner rod 400 is rotated and advanced distally, since the inner rod 400 and the coupling head 500 are in a snap-fit structure, the coupling head 700 performs only the distal advancing movement and does not rotate with the inner rod 400. The design of the connector 700 may be a prior art and will not be described herein.

In some embodiments, the proximal end of the inner rod 400 is provided with a push handle 420, which push handle 420 is preferably a quincuncial handle, so that turning the push handle 420 rotates the inner rod 400.

In some embodiments, referring to fig. 6, the outer wall of the push rod 200 is provided with a guide slot 230, the length direction of the guide slot 230 being the axial direction of the push rod 200.

Referring to fig. 2 (a), 2 (b), 3 (b), 4 (a), and 7, the balloon pressurizing device further includes a support plate 810, the support plate 810 is disposed in the sleeve 100, the support plate 810 has a support plate arch groove 811, the support plate arch groove 811 supports the push rod 200, a guide bar 812 is disposed in the support plate arch groove 811, a length direction of the guide bar 812 is an axial direction of the push rod 200, and the guide bar 812 is slidably connected with the guide groove 230. By the cooperation of the guide bars 812 and the guide grooves 230, the rotation of the push rod 200 is restricted, thereby ensuring that the inner rod 400 can rotate relative to the push rod 200.

In some embodiments, the support plate arcuate slot 811 is disposed opposite the press block arcuate slot 320.

In some embodiments, the proximal side of the dial receiving chamber 110 is provided with a sleeve coupling 820, the distal end of the sleeve coupling 820 is provided with a support plate 810, and the support plate 810 protrudes from the proximal side of the sleeve 100 into the interior of the sleeve 100.

In some embodiments, the rotation shaft is rotatably coupled to the sleeve coupling 820 through a proximal cavity wall of the dial-receiving cavity 110.

In some embodiments, the proximal end of the push rod 200 is provided with a stop ring 240, the stop ring 240 being located on the proximal side of the collet connector 820. The stop collar 240 may be configured to limit the distance the push rod 200 moves in the distal direction.

The present utility model has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the utility model based on the above description. Accordingly, certain details of the embodiments are not to be interpreted as limiting the utility model, which is defined by the appended claims.

Claims (10)

1. A balloon pressurizing device comprises a sleeve, a pushing rod and a pressing block;

the push rod is arranged in the sleeve, the push rod is hollow, the inner wall of the far end of the push rod is provided with internal threads, and the outer wall of the push rod is provided with a plurality of outer blocking rings;

the inner wall of the pressing block is provided with a plurality of inner blocking rings, the pressing block stretches into the inner part of the proximal end of the sleeve, and the inner blocking rings can be spliced with the outer blocking rings;

the balloon inflation device further comprises:

the inner rod is arranged in the pushing rod, the far end and the near end of the inner rod extend out of the pushing rod respectively, an external thread is arranged on the outer wall of the far end of the inner rod, the external thread of the inner rod is in threaded connection with the internal thread of the pushing rod, and the near end of the inner rod extends out of the sleeve.

2. The balloon inflation device of claim 1, wherein an outer side of the outer barrier ring is a pointed configuration and an inner side of the inner barrier ring is a pointed configuration.

3. The balloon inflation device of claim 1, wherein a pressing block arcuate groove is formed in a side of the pressing block facing the pushing rod, the inner blocking ring is arranged in the pressing block arcuate groove, and the pressing block arcuate groove is sleeved outside the pushing rod.

4. The balloon inflation device of claim 1, wherein the proximal and distal sides of the compression block each have a gap.

5. The balloon inflation device of claim 4, wherein the gap is between 0.2mm and 0.5mm.

6. The balloon inflation device of claim 1, wherein the proximal end of the sleeve defines a dial-receiving cavity, the dial-receiving cavity being open at one end;

the balloon inflation device further comprises:

the two sides of the shifting block are rotatably connected with the inner side wall of the shifting block accommodating cavity, the bottom of the shifting block is of an eccentric wheel structure, the pressing block is positioned between the shifting block and the pushing rod, and the bottom of the shifting block can press the pressing block so as to enable the inner blocking ring to be inserted into the outer blocking ring.

7. The balloon inflation device of claim 6, further comprising:

and one end of the spring is abutted to the pressing block, and the other end of the spring is abutted to the inner wall of the sleeve.

8. The balloon inflation device of claim 1, further comprising:

the connector is of a hollow structure, the connector is located inside the sleeve, the proximal end of the connector is connected with the distal end of the inner rod in a clamping mode, and the distal end of the connector is connected with the inner wall of the sleeve in a sealing and abutting mode through a sealing gasket.

9. The balloon inflation device of claim 1, wherein the outer wall of the push rod is provided with a guide groove, and the length direction of the guide groove is the axial direction of the push rod;

the balloon inflation device further comprises:

the supporting plate is provided with a supporting plate arch-shaped groove, the supporting plate arch-shaped groove supports the pushing rod, guide bars are arranged in the supporting plate arch-shaped groove, the length direction of each guide bar is the axial direction of the pushing rod, and the guide bars are connected with the guide grooves in a sliding mode.

10. The balloon inflation device of claim 9, further comprising:

a sleeve connecting piece, wherein the sleeve connecting piece is arranged on the proximal end side of the sleeve, and the support plate is arranged at the distal end of the sleeve connecting piece;

the support plate extends into the sleeve from the proximal side of the sleeve.