Components for rapid pressure boosting and depressurization, including their balloon catheter system and pressure pump.

Abstract

This invention discloses a component for rapid pressurization and depressurization, its balloon catheter system, and a pressure pump. The component includes a push rod; an inner cylinder fitted over the push rod, which can slide within the inner cylinder; a first hole for fluid flow on the distal end face of the inner cylinder; and a stop flange on the proximal end of the inner cylinder; an outer cylinder fitted over the inner cylinder, which can slide within the outer cylinder; a second hole corresponding to the first hole on the distal end face of the outer cylinder; the outer cylinder includes a depressurization section and an actuation section, with a stop shoulder at their connection; an elastic element disposed in the space between the actuation sections of the inner and outer cylinders; the distal end of the elastic element abuts against the stop shoulder, and the proximal end abuts against the stop flange; and a stop element for fixing the inner cylinder relative to the outer cylinder. This invention allows for convenient advancement and rapid retraction with a small cross-section channel, while achieving a large suction force with a large cross-section channel, and the retraction is labor-saving and fast through the elastic element.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more specifically to a component for rapid pressurization and depressurization, and a balloon catheter system and pressure pump thereof. Background Technology

[0002] Interventional therapy and surgery, as a relatively advanced and effective treatment method, are developing very rapidly. Under the guidance of imaging medicine, a tiny channel a few millimeters in diameter is opened in the skin or blood vessels, or through the body's existing channels, to insert a specially made catheter or instrument to the lesion site. For example, the catheter can reach the heart through blood vessels to perform diagnostic imaging, treatment, or tissue collection. It is an emerging treatment method between surgical and internal medicine treatments.

[0003] Interventional treatments and surgeries require the use of balloon dilation catheters, and the inflation and depressurization of balloon catheters require a pressure-depressurization system. Currently, the products used in clinical practice achieve pressure-depressurization and depressurization through threaded transmission. The depressurization process requires two-handed operation, which is complicated and inconvenient to use. In particular, large-volume balloon catheters require a long pressure-depressurization process, which can easily lead to prolonged vascular occlusion, tissue ischemia, functional impairment, and even endanger life.

[0004] Therefore, there is a severe lack in the art of a novel component, system, or device for rapid pressurization and depressurization to achieve rapid pressurization and depressurization and reduce vascular occlusion time. Summary of the Invention

[0005] The purpose of this invention is to provide a component for rapid pressurization and depressurization, along with its balloon catheter system and pressure pump. The component, balloon catheter system, and pressure pump of this invention allow for easy advancement and rapid retraction through a small-section channel, while simultaneously achieving a large suction force through a large-section channel. Furthermore, retraction is achieved through an elastic element, making it labor-saving and fast.

[0006] In a first aspect of the invention, an assembly for rapid pressurization and depressurization is provided, the assembly comprising a push rod having a seal at its distal end; an inner cylinder fitted over the push rod, the push rod being slidable within the inner cylinder, the distal end face of the inner cylinder having a first hole for fluid flow, and a stop flange at its proximal end; an outer cylinder fitted over the inner cylinder, the inner cylinder being slidable within the outer cylinder, the distal end face of the outer cylinder having a second hole corresponding to the first hole, the outer cylinder including a depressurization section and an actuation section, wherein a stop shoulder is provided at the connection between the depressurization section and the actuation section; an elastic member disposed in the space between the inner cylinder and the actuation section of the outer cylinder, wherein the distal end of the elastic member abuts against the stop shoulder, and the proximal end of the elastic member abuts against the stop flange; and a stop member for fixing the inner cylinder relative to the outer cylinder.

[0007] In another preferred embodiment, the stop member is used to control the extension and retraction of the elastic member, thereby controlling the positional relationship between the outer cylinder and the inner cylinder through the movement state of the elastic member.

[0008] In another preferred embodiment, the pressure relief section is a slidable section at the distal end of the inner cylinder, and the actuation section is a section that causes the inner cylinder to retract rapidly.

[0009] In another preferred embodiment, the elastic element is a spring.

[0010] In another preferred embodiment, the length of the spring in the compressed state is 1-8 cm; preferably, 3-5 cm.

[0011] In another preferred embodiment, the length of the spring in its extended state is 3-20 cm; preferably, 5-18 cm; more preferably, 8-13 cm.

[0012] In another preferred embodiment, the space enclosed between the seal of the push rod and the inner cylinder is a first cavity, and the space enclosed between the distal end of the inner cylinder and the outer cylinder is a second cavity.

[0013] In another preferred embodiment, the first cavity is an injection cavity and the second cavity is a pressure relief cavity.

[0014] In another preferred embodiment, the near end of the push rod is provided with a handle for facilitating pushing and pulling of the push rod.

[0015] In another preferred embodiment, a clamping handle is provided at the proximal end of the outer cylinder to facilitate the operator's gripping and securing of the component.

[0016] In another preferred embodiment, the inner cylinder and the outer cylinder are coaxial.

[0017] In another preferred embodiment, the number of inner cylinders is one or more.

[0018] In another preferred embodiment, the number of outer cylinders is one or more.

[0019] In another preferred embodiment, the actuating section is provided with a groove that mates with the stop flange, and the stop flange can slide in the groove.

[0020] In another preferred embodiment, the stop is disposed on the stop flange, the stop includes a snap-fit ​​element, and the actuating section of the outer cylinder has a notch that mates with the snap-fit ​​element; when the snap-fit ​​element mates with the notch, the inner cylinder and the outer cylinder are relatively fixed; when the snap-fit ​​element disengages from the notch, the inner cylinder and the outer cylinder are released from relative fixation, and the inner cylinder retracts rapidly under the pushing action of the elastic element.

[0021] In a second aspect of the invention, a balloon catheter system for rapid pressurization and depressurization is provided, the system comprising the aforementioned components, a balloon, and a balloon catheter for connecting the components and the balloon, the proximal end of the balloon catheter being in fluid communication with a second orifice of the outer tube.

[0022] In another preferred embodiment, the outer surface of the balloon is provided with ribs for anti-slip purposes.

[0023] In another preferred embodiment, the number of ribs is 1-10; preferably, it is 2.

[0024] In another preferred embodiment, the balloon is provided with a radiopaque ring for displaying position.

[0025] In another preferred embodiment, the number of developing rings is 1-10; preferably, it is 3.

[0026] In another preferred embodiment, the diameter of the balloon in the inflated state is 4-40 mm; preferably, 20-30 mm.

[0027] In another preferred embodiment, the length of the balloon is 8-200 mm; preferably, 15-120 mm; more preferably, 35-45 mm.

[0028] In a third aspect of the invention, a pressure pump for rapid pressurization and depressurization is provided. The pressure pump includes the aforementioned components and a snap-fit ​​assembly. The snap-fit ​​assembly includes a first snap-fit ​​portion disposed on the push rod and a second snap-fit ​​portion disposed on the inner cylinder that engages with the first snap-fit ​​portion. The relative position of the push rod and the inner cylinder is controlled by the engagement of the first snap-fit ​​portion and the second snap-fit ​​portion: when the first snap-fit ​​portion and the second snap-fit ​​portion are disengaged, the push rod slides freely in the inner cylinder; when the first snap-fit ​​portion and the second snap-fit ​​portion are engaged, the push rod is fixed relative to the inner cylinder.

[0029] In another preferred embodiment, the first latching portion is a threaded section; in another preferred embodiment, the second latching portion includes a reset member, a fitting member, and a pusher member, wherein the reset member and the fitting member are fixedly connected, the fitting member is used to engage with the first latching portion, and the pusher member is fixedly connected to the side of the fitting member opposite to the reset member.

[0030] In another preferred embodiment, the reset element is a spring.

[0031] In another preferred embodiment, a control key is provided on the inner cylinder for controlling the movement of the second latching part. One end of the control key is rotatably fixed to the inner cylinder, and the middle part of the control key, near the inner cylinder, abuts against the second latching part, providing an upward supporting force for the control key.

[0032] In use, the operator presses the control key at the end away from the inner cylinder with their hand to provide downward pressure to the control key.

[0033] In another preferred embodiment, the inner cylinder is provided with a baffle to protect the control key and prevent accidental operation. The baffle is provided with a track, and the outer end of the control key slides along the track.

[0034] In another preferred embodiment, the baffle is a curved baffle.

[0035] In another preferred embodiment, the track is disposed on the side of the baffle near the control key.

[0036] In another preferred embodiment, the track is a groove for receiving the outer end of the control key, the outer end of which is received in the groove and can slide along the groove.

[0037] It should be noted that the form of the track is not unique; it can also be a raised shape. Correspondingly, a groove is provided at the outer end of the control key, so that the control key can still slide along the raised track, etc.

[0038] In another preferred embodiment, a buffer spring is provided in the space enclosed by the track, the inner cylinder, and the control key to buffer the downward pressure of the control key and accelerate the rebound of the control key.

[0039] In another preferred embodiment, one end of the buffer spring is fixedly connected to the outer end of the control key, and the other end is fixedly connected to the inner cylinder.

[0040] In another preferred embodiment, the buffer spring is disposed along the track and extends along the track.

[0041] In another preferred embodiment, the track is provided with a buffer spring.

[0042] In another preferred embodiment, the baffle is provided with a track, and a buffer spring is provided in the track. The outer end of the control key slides along the track, and the buffer spring is used to buffer the downward pressure of the control key and accelerate the rebound of the control key.

[0043] In another preferred embodiment, the control key and the pusher are integrally formed.

[0044] In another preferred embodiment, the control key and the pusher are two separate components.

[0045] In another preferred embodiment, the pressure pump includes a pressure gauge, a conduit, and a three-way valve. The pressure gauge is located at the far end of the outer cylinder and is in fluid communication with the outer cylinder. The proximal end of the conduit is fixedly connected to the farthest end face of the outer cylinder and is in fluid communication with the inner cylinder. The other end of the conduit is connected to the three-way valve.

[0046] In another preferred embodiment, the ratio of the cross-sectional area of ​​the injection chamber to the pressure relief chamber is 0.5-0.95; preferably, 0.6-0.85; more preferably, 0.65-0.75.

[0047] In another preferred embodiment, the actuation section is stacked around the pressure relief section.

[0048] In another preferred embodiment, the actuation section is arranged radially symmetrically around the pressure pump on the periphery of the pressure relief section.

[0049] In another preferred embodiment, the actuating section is disposed against the pressure relief section, and a stop shoulder is formed between the actuating section and the pressure relief section.

[0050] In another preferred embodiment, the actuation section includes at least two independent cavities, namely pressure relief cavities.

[0051] In another preferred embodiment, the pressure relief chambers are independent of each other.

[0052] In another preferred embodiment, a first control handle is provided at the proximal end of the actuation section.

[0053] In another preferred embodiment, the inner cylinder is provided with at least two stop flanges corresponding to the pressure relief chamber.

[0054] In another preferred embodiment, the stop flanges are independent of each other, and their proximal ends are connected as one unit by a second control handle.

[0055] In another preferred embodiment, the distal end of the stop flange extends into the pressure relief chamber, and the stop flange can slide within the pressure relief chamber.

[0056] In another preferred embodiment, the elastic element is disposed within the pressure relief cavity, with one end abutting against the stop shoulder and the other end abutting against the stop flange of the inner cylinder.

[0057] In another preferred embodiment, the stop includes a housing, a connector, and an elastic telescopic member.

[0058] In another preferred embodiment, the outer shell is fixed to the outer cylinder, and the connector and the elastic telescopic member are accommodated in the housing.

[0059] In another preferred embodiment, the outer shell is connected to the outer cylinder.

[0060] In another preferred embodiment, one end of the elastic telescopic member abuts against the housing, and the other end of the elastic telescopic member can pass through the actuating section of the outer cylinder and communicate with the stop flange of the inner cylinder.

[0061] In another preferred embodiment, a through hole is provided on the stop flange of the inner cylinder, and the elastic telescopic member is inserted into the inner cavity of the stop flange of the inner cylinder through the through hole.

[0062] In another preferred embodiment, the elastic telescopic member includes a spring.

[0063] In another preferred embodiment, the elastic telescopic member further includes a support column.

[0064] In another preferred embodiment, the connector connects the elastic telescopic members into one unit, and the telescopic movement of the elastic telescopic members can be controlled through the connector.

[0065] In another preferred embodiment, when the elastic telescopic member is subjected to a small compressive force, i.e., the elastic telescopic member extends into the inner cavity of the stop flange of the inner cylinder, the inner cylinder and the outer cylinder are relatively fixed; when the elastic telescopic member is subjected to a large compressive force, i.e., the connector further compresses the elastic telescopic member to retract it from the inner cavity of the stop flange of the inner cylinder into the outer shell, the inner cylinder retracts rapidly relative to the outer cylinder under the action of the elastic member.

[0066] In another preferred embodiment, the elastic telescopic member of the stop is arranged (generally) perpendicular to the elastic member.

[0067] The main advantages of this invention include:

[0068] (a) Fluid is pressurized by pumping it through a chamber with a small cross-section, which facilitates propulsion;

[0069] (b) The fluid is recovered and depressurized through a chamber with a larger cross-section, which has a greater suction force and is faster and more convenient to depressurize;

[0070] (c) Through the combination of a uniquely structured elastic element and a double-cylinder structure (outer and inner cylinders), efficient, labor-saving, and rapid retraction and pressure relief are achieved;

[0071] (d) Easy to operate; (e) A dual limit structure can be set to limit the relative positions of the outer cylinder and the inner cylinder, as well as the relative position between the inner cylinder and the push rod, thereby avoiding operational errors and improving safety.

[0072] It should be understood that, within the scope of this invention, the above-described technical features of this invention and the technical features specifically described below (such as in the embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be described in detail here. Attached Figure Description

[0073] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0074] Figure 1 This is a perspective view of a component for rapid pressurization and depressurization in one embodiment of the present invention;

[0075] Figure 2 yes Figure 1 First cross-sectional view of the component used for rapid pressurization and depressurization;

[0076] Figure 3 yes Figure 1 Second cross-sectional view of the component used for rapid pressurization and depressurization;

[0077] Figure 4 This is a perspective view of a balloon catheter system for rapid pressure boosting and depressurization according to an embodiment of the present invention;

[0078] Figure 5 yes Figure 4 The first cross-sectional view of the balloon catheter system for rapid pressure boosting and depressurization in its initial state;

[0079] Figure 6 yes Figure 4 The second cross-sectional view of the balloon catheter system for rapid pressure boosting and depressurization in its initial state;

[0080] Figure 7 yes Figure 4 The first cross-sectional view of the balloon catheter system for rapid pressure boosting and depressurization with the lumen filled;

[0081] Figure 8 yes Figure 4 The second cross-sectional view of the balloon catheter system for rapid pressure boosting and depressurization in the state of the lumen being filled;

[0082] Figure 9 yes Figure 4 The first cross-sectional view of the balloon catheter system for rapid pressure boosting and depressurization in the balloon inflated state;

[0083] Figure 10 yes Figure 4 The second cross-sectional view of the balloon catheter system for rapid pressure boosting and depressurization in the balloon inflated state;

[0084] Figure 11 yes Figure 4 The first cross-sectional view of the balloon catheter system for rapid inflation and deflation in the state of balloon contraction and external lumen filling;

[0085] Figure 12 yes Figure 4 The second cross-sectional view of the balloon catheter system for rapid inflation and deflation in the state of balloon contraction and external lumen filling;

[0086] Figure 13 yes Figure 4 A cross-sectional view of the balloon in a balloon catheter system used for rapid pressure boosting and depressurization;

[0087] Figure 14 This is a perspective view of a pressure pump for rapid pressurization and depressurization in one embodiment of the present invention;

[0088] Figure 15 yes Figure 14 A cross-sectional view of the pressure pump used for rapid pressurization and depressurization in its initial state;

[0089] Figure 16 yes Figure 14 A cross-sectional view of a pressure pump used for rapid pressurization and depressurization with its internal cavity filled.

[0090] Figure 17 yes Figure 14 A cross-sectional view of the pressure pump used for rapid pressurization and depressurization in the pressurized state;

[0091] Figure 18 yes Figure 14 The first cross-sectional view of the pressure pump used for rapid pressurization and depressurization in the depressurization state, i.e., the outer cavity is filled;

[0092] Figure 19 yes Figure 14 The second cross-sectional view shows the pressure pump used for rapid pressurization and depressurization in the depressurization state, i.e., the outer cavity is filled.

[0093] Figure 20 This is a perspective view of a pressure pump for rapid pressurization and depressurization in another embodiment of the present invention;

[0094] Figure 21 yes Figure 20 Front view of the pressure pump used for rapid pressure boosting and depressurization;

[0095] Figure 22 and Figure 23 yes Figure 21A cross-sectional view of section AA of the pressure pump used for rapid pressurization and depressurization;

[0096] Figure 24 yes Figure 21 A cross-sectional view of the BB section of a pressure pump used for rapid pressurization and depressurization;

[0097] Figure 25 yes Figure 21 A cross-sectional view of the pressure pump used for rapid pressurization and depressurization, taken along the central section parallel to the page.

[0098] Figure 26 yes Figure 21 Left view of the pressure pump used for rapid pressurization and depressurization;

[0099] Figure 27 yes Figure 26 A cross-sectional view of the CC section of a pressure pump used for rapid pressurization and depressurization. The labels in the figures are as follows:

[0100] 1-Push rod;

[0101] 2-Inner cylinder;

[0102] 3-Outer cylinder;

[0103] 4-Elastic element;

[0104] 5-Stop;

[0105] 6-First hole;

[0106] 7-Second hole;

[0107] 8-Pressure relief section;

[0108] 9-Actuation segment;

[0109] 10-Stop shoulder;

[0110] 11-Inner cavity;

[0111] 12-External cavity;

[0112] 13-Stop flange;

[0113] 14-Groove;

[0114] 15-Snap fasteners;

[0115] 16-Balloon;

[0116] 17-Balloon catheter;

[0117] 18-ribs;

[0118] 19-Developing ring;

[0119] 20 - Threaded section;

[0120] 21-Reset component;

[0121] 22-fitting parts;

[0122] 23 - Push item;

[0123] 24-Control keys;

[0124] 25-Baffle;

[0125] 26-track;

[0126] 27 - Buffer spring;

[0127] 28 - Pressure gauge;

[0128] 29-Catheter;

[0129] 30 - Three-way valve;

[0130] 31-First control handle;

[0131] 32-Second control handle;

[0132] 33 - Outer shell;

[0133] 34-Connector;

[0134] 35 - Elastic expansion joint;

[0135] 36-Pillar. Detailed Implementation

[0136] Through extensive and in-depth research and screening, the inventors have developed for the first time a component for rapid pressurization and depressurization, along with its balloon catheter system and pressure pump. Compared to existing technologies, the component, balloon catheter system, and pressure pump of this invention utilize a dual-cylinder design to achieve different pressurization and depressurization chambers. The cross-sectional area of ​​the pressurization chamber is smaller than that of the depressurization chamber, allowing for convenient advancement and rapid retraction through a small-section channel, while simultaneously achieving a large suction force through a large-section channel. Furthermore, the retraction is achieved through an elastic element, resulting in effortless and rapid retraction. This invention is based on these principles.

[0137] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the accompanying drawings are schematic diagrams, and therefore the apparatus and device of the present invention are not limited to the size or scale of the schematic diagrams.

[0138] It should be noted that in the claims and specification of this patent, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0139] Example 1

[0140] The components for rapid pressurization and depressurization in this embodiment are as follows: Figure 1-3 As shown. This assembly for rapid pressurization and depressurization includes a push rod 1, an inner cylinder 2, an outer cylinder 3, an elastic element 4, and a stop element 5. The push rod 1 is a slender rod, and the inner cylinder 2 is fitted over the push rod 1, allowing the push rod 1 to slide within the inner cylinder 2. The distal end face of the inner cylinder 2 has a first hole 6 for fluid flow. The distal end of the push rod 1 has a sealing element, such as a rubber gasket, to create a tight connection between the push rod 1 and the inner cylinder 2, ensuring that fluid only enters and exits through the first hole 6 on the distal end face of the inner cylinder 2. A handle is provided at the proximal end for easy pushing and pulling of the push rod 1. A stop flange 13 is also provided at the proximal end of the inner cylinder 2. The outer cylinder 3 is fitted over the inner cylinder 2, allowing the inner cylinder 2 to slide within the outer cylinder 3. A second hole 7, corresponding to the first hole 6, is provided at the distal end face of the outer cylinder 3. A clamping handle is provided at the proximal end for easy gripping and securing of the assembly by the operator. The outer cylinder 3 includes a pressure-relieving section 8 and an actuating section 9. The pressure-relieving section 8 is a slidable section at the distal end of the inner cylinder 2, and the actuating section 9 is a section that causes the inner cylinder 2 to retract rapidly. A stop shoulder 10 is provided at the connection between the pressure-relieving section 8 and the actuating section 9. In this embodiment, there is one outer cylinder 3 and one inner cylinder 2, and they are coaxially arranged. It is understood that there can be multiple outer cylinders 3 and multiple inner cylinders 2, and the inner cylinders 2 and outer cylinders 3 can be arranged on different axes, etc. For example, there is one outer cylinder 3 and three inner cylinders 2, with the three inner cylinders 2 arranged within one outer cylinder 3.

[0141] The space enclosed between the seal of push rod 1 and inner cylinder 2 is called inner cavity 11, and the space enclosed between the far end of inner cylinder 2 and outer cylinder 3 is called outer cavity 12. Among them, inner cavity 11 is injection cavity, and outer cavity 12 is pressure relief cavity.

[0142] The elastic element 4 is disposed in the space between the actuating section 9 of the inner cylinder 2 and the outer cylinder 3, wherein the distal end of the elastic element 4 abuts against the stop shoulder 10, and the proximal end of the elastic element 4 abuts against the stop flange 13. The actuating section 9 is provided with a groove 14 that mates with the stop flange 13, and the stop flange 13 can slide in the groove 14.

[0143] In this embodiment, the elastic element 4 is a spring, the length of which is 1-8cm in the compressed state; preferably, 3-5cm; and the length in the extended state is 3-20cm; preferably, 5-18cm; more preferably, 8-13cm. It is understood that the elastic element 4 can also be a spring sheet or other components.

[0144] The stop 5 is provided on the stop flange and is used to fix the inner cylinder 2 relative to the outer cylinder 3. The stop 5 includes a snap fastener 15, and the actuating section 9 of the outer cylinder 3 is provided with a notch that cooperates with the snap fastener 15. When the snap fastener 15 is engaged with the notch, the inner cylinder 2 and the outer cylinder 3 are relatively fixed. When the snap fastener 15 is disengaged from the notch, the inner cylinder 2 and the outer cylinder 3 are released from relative fixation, and the inner cylinder 2 is quickly retracted under the pushing action of the elastic member 4.

[0145] In this embodiment, the latching member 15 is a trigger structure. When the wrench is pulled down, the latching member 15 disengages from the notch on the outer cylinder 3. When the wrench is released, the latching member 15 engages with the notch on the outer cylinder 3 under the action of elastic elements such as springs.

[0146] Example 2

[0147] The balloon catheter system used for rapid pressure boosting and depressurization in this embodiment is as follows: Figure 4-13 As shown. The balloon catheter system includes components as described in Example 1, a balloon 16, and a balloon catheter 17 for connecting the components and the balloon 16. The proximal end of the balloon catheter 17 is in fluid communication with the second orifice 7 of the outer tube 3, and the distal end is in fluid communication with the balloon 16.

[0148] The outer surface of the balloon 16 is provided with ribs 18 for anti-slip purposes. The number of ribs 18 is 1-10; preferably, 2. These ribs 18 expand or contract with the balloon 16. The balloon 16 is also provided with imaging rings 19 for indicating position. The number of imaging rings 19 is 1-10; preferably, 3. The diameter of the balloon 16 in its expanded state is 4-40 mm; preferably, 20-30 mm. The length of the balloon 16 is 8-200 mm; preferably, 15-120 mm; more preferably, 35-45 mm.

[0149] When using this balloon catheter 17 system, it is initially in the initial state, with the balloon 16 in a contracted state, and the volumes of both the inner lumen 11 and the outer lumen 12 are zero. Figure 5-6 As shown; next is the liquid-filled state, push rod 1 is retracted, fluid is drawn into inner cylinder 2, and inner cavity 11 is filled, as shown. Figure 7-8 As shown, at this time, the balloon 16 is still in a contracted state; then it is in a pressurized state, the push rod 1 is pushed forward, injecting the fluid in the inner cavity 11 into the balloon 16, and the balloon 16 is inflated, as... Figure 9-10 As shown; finally, in the decompression state, the control buckle 15 disengages from the recess of the outer cylinder 3, the inner cylinder 2 and the outer cylinder 3 are no longer fixed, and under the action of the elastic element 4, the inner cylinder 2 retracts backward relative to the outer cylinder 3, and the push rod 1 in the inner cylinder 2 also retracts together, and the fluid in the balloon 16 is sucked into the outer cavity 12, as shown. Figure 11-12 As shown.

[0150] Example 3

[0151] The pressure pump used for rapid pressure boosting and depressurization in this embodiment is as follows: Figure 14-19 As shown. The pressure pump includes components as described in Embodiment 1, a snap-fit ​​assembly, a pressure gauge 28, a conduit 29, and a three-way valve 30. The pressure gauge 28 is located at the far end of the outer cylinder 3 and is in fluid communication with the outer cylinder 3. The proximal end of the conduit 29 is fixedly connected to the farthest end face of the outer cylinder 3 and is in fluid communication with the inner cylinder 2. The other end of the conduit 29 is connected to the three-way valve 30.

[0152] The pressure pump for rapid pressurization and depressurization in this embodiment achieves rapid and labor-saving pressurization and depressurization through the component for rapid pressurization and depressurization as described in Embodiment 1. In use, initially, the volumes of both the inner cavity 11 and the outer cavity 12 are zero, as shown below. Figure 15 As shown; next is the liquid-filled state, push rod 1 is retracted, fluid is drawn into inner cylinder 2, and inner cavity 11 is filled, as shown. Figure 16 As shown; furthermore, in the pressurized state, push rod 1 moves forward, pressurizing the fluid in the inner cavity 11, as shown. Figure 17 As shown; finally, in the depressurization state, the control buckle 15 disengages from the recess of the outer cylinder 3, the inner cylinder 2 and the outer cylinder 3 are no longer fixed, and under the action of the elastic element 4, the inner cylinder 2 retracts backward relative to the outer cylinder 3, and the push rod 1 in the inner cylinder 2 also retracts together, and the pressurized fluid is drawn into the outer cavity 12, as shown. Figure 18-19 As shown.

[0153] In this embodiment, the pressure pump for rapid pressurization and depressurization achieves motion control between the push rod 1 and the inner cylinder 2 through a snap-fit ​​assembly. The snap-fit ​​assembly includes a threaded section 20 on the push rod 1 and a snap-fit ​​part on the inner cylinder 2 that engages with the threaded section 20. The relative position of the push rod 1 and the inner cylinder 2 is controlled by the engagement of the threaded section 20 and the snap-fit ​​part: when the threaded section 20 and the snap-fit ​​part are disengaged, the push rod 1 slides freely in the inner cylinder 2; when the threaded section 20 and the snap-fit ​​part are engaged, the push rod 1 is fixed relative to the inner cylinder 2.

[0154] The latching part includes a reset member 21, a fitting member 22, and a pusher member 23. The reset member 21 and the fitting member 22 are fixedly connected. The fitting member 22 is used to engage with the threaded section 20. The pusher member 23 is fixedly connected to the side of the fitting member 22 opposite to the reset member 21. The reset member 21 is a spring.

[0155] A control key 24 is provided on the inner cylinder 2 to control the movement of the latching part. One end of the control key 24 is rotatably fixed to the inner cylinder 2, and the middle part of the control key 24, close to the inner cylinder 2, abuts against the latching part, providing upward support for the control key 24. In use, the operator presses the other end of the control key 24 away from the inner cylinder 2, providing downward pressure for the control key 24.

[0156] The inner cylinder 2 is also equipped with a curved baffle 25, which protects the control key 24 and prevents accidental operation. A track 26 is provided on the baffle 25, along which the outer end of the control key 24 slides. The track 26 is located on the side of the baffle 25 closest to the control key 24. The track 26 is a groove for accommodating the outer end of the control key 24, which slides along the groove. A buffer spring 27 is provided in the space enclosed by the track 26, the inner cylinder 2, and the control key 24 to buffer the downward pressure of the control key 24 and accelerate its rebound. One end of the buffer spring 27 is fixedly connected to the outer end of the control key 24, and the other end is fixedly connected to the inner cylinder 2. The buffer spring 27 extends along the track 26.

[0157] Example 4

[0158] The pressure pump used for rapid pressure boosting and depressurization in this embodiment is as follows: Figure 20-27 As shown. This pressure pump is similar to that of Embodiment 3, except that the actuating section 9 of the outer cylinder 3 is stacked around the outer periphery of the inner cylinder 2 in this embodiment, so as to further shorten the axial distance of the pressure pump and make the operation more practical.

[0159] In this embodiment, the actuation section 9 of the outer cylinder 3 consists of two separate cavities independent of the pressure relief section 8. These two cavities are symmetrically arranged radially around the pressure relief section 8 and abut against it. A stop shoulder 10 is formed between the actuation section 9 and the pressure relief section 8. Preferably, a first control handle 31 is provided at the proximal end of the actuation section 9.

[0160] Correspondingly, the inner cylinder 2 is provided with two independent stop flanges 13. The proximal ends of the stop flanges 13 are connected as one piece by the second control handle 32, and their distal ends extend into the cavity. One stop flange 13 is placed in one cavity of the outer cylinder 3 and can slide within the cavity. Preferably, the distance between the outer wall of the stop flange 13 and the inner wall of the cavity is 0.5-2 mm.

[0161] The elastic element 4 is disposed in the cavity, with one end abutting against the stop shoulder 10 and the other end abutting against the stop flange 13 of the inner cylinder 2.

[0162] The stop includes a housing 33, a connector 34, and an elastic telescopic member 35. The housing 33 is fixed to the outer cylinder 3, and the connector 34 and the elastic telescopic member 35 are housed within the housing 33. The housing 33 is in communication with the outer cylinder 3. One end of the elastic telescopic member 35 abuts against the housing 33, and the other end of the elastic telescopic member 35 can pass through the actuating section 9 of the outer cylinder 3 and communicate with the stop flange 13 of the inner cylinder 2. A through hole is provided on the stop flange 13 of the inner cylinder 2, and the elastic telescopic member 35 is inserted into the inner cavity of the stop flange 13 of the inner cylinder 2 through the through hole. The elastic telescopic member 35 includes a spring. Optionally, a support column 36 is also provided, and the lower end of the spring abuts against the support column 36. The elastic telescopic member 35 of the stop is arranged perpendicularly to the elastic member 4. The connector 34 is connected to the support column 36 of the elastic telescopic member 35 as a whole, and the extension and retraction of the elastic telescopic member 35 can be controlled by the up and down movement of the connector 34. When the elastic telescopic member 35 is subjected to a small compressive force, that is, when the elastic telescopic member 35 extends into the inner cavity of the stop flange 13 of the inner cylinder 2, the inner cylinder 2 and the outer cylinder 3 are relatively fixed; when the elastic telescopic member 35 is subjected to a large compressive force, that is, when the connecting member 34 further compresses the elastic telescopic member 35 to retract it from the inner cavity of the stop flange 13 of the inner cylinder 2 into the outer shell 33, the inner cylinder 2 retracts rapidly relative to the outer cylinder 3 under the action of the elastic member 4.

[0163] All documents mentioned in this invention are incorporated herein by reference as if each document were individually incorporated by reference. Furthermore, it should be understood that after reading the foregoing teachings of this invention, those skilled in the art can make various alterations or modifications to this invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A component for rapid pressurization and depressurization, characterized in that, The components include A push rod, the distal end of which is provided with a seal; The inner cylinder is sleeved outside the push rod, and the push rod can slide in the inner cylinder. The distal end face of the inner cylinder is provided with a first hole for fluid flow, and the proximal end of the inner cylinder is provided with a stop flange. An outer cylinder is fitted over the inner cylinder, and the inner cylinder can slide within the outer cylinder. A second hole corresponding to the first hole is provided on the distal end face of the outer cylinder. The outer cylinder includes a pressure relief section and an actuation section, wherein a stop shoulder is provided at the connection between the pressure relief section and the actuation section. An elastic element disposed in the space between the actuating section of the inner cylinder and the outer cylinder, wherein the distal end of the elastic element abuts against the stop shoulder, and the proximal end of the elastic element abuts against the stop flange; and A stop member for fixing the inner cylinder relative to the outer cylinder; The space between the seal of the push rod and the inner cylinder is the first cavity, and the space between the far end of the inner cylinder and the outer cylinder is the second cavity; The first cavity is an injection cavity, the second cavity is a pressure relief cavity, and the inner cylinder and the outer cylinder are coaxial.

2. The component as claimed in claim 1, characterized in that, The actuating section is provided with a groove that mates with the stop flange, and the stop flange can slide in the groove.

3. The component as claimed in claim 1, characterized in that, The stop is disposed on the stop flange. The stop includes a snap-fit ​​element. The actuating section of the outer cylinder has a notch that mates with the snap-fit ​​element. When the snap-fit ​​element mates with the notch, the inner cylinder and the outer cylinder are relatively fixed. When the snap-fit ​​element disengages from the notch, the inner cylinder and the outer cylinder are released from relative fixation, and the inner cylinder quickly retracts under the pushing action of the elastic element.

4. The component as claimed in claim 1, characterized in that, The push rod has a handle at its near end for easy pushing and pulling.

5. The component as claimed in claim 1, characterized in that, A clamping handle is provided at the near end of the outer cylinder to facilitate the operator's gripping and securing of the component.

6. A balloon catheter system for rapid pressure boosting and depressurization, characterized in that, The system includes a component as described in any one of claims 1-5, a balloon, and a balloon catheter for connecting the component and the balloon, the proximal end of the balloon catheter being in fluid communication with a second hole in the outer cylinder, and / or the balloon being in a fluid-filled state, the push rod being retracted, fluid being drawn into the inner cylinder, the injection chamber being filled, while the balloon is still in a contracted state. Furthermore, in the pressurized state, the push rod advances forward, injecting the fluid in the injection chamber into the balloon, causing the balloon to expand; Finally, in the pressure relief state, under the action of the elastic element, the inner cylinder retracts backward relative to the outer cylinder, and the push rod in the inner cylinder also retracts together, and the fluid in the balloon is drawn into the pressure relief chamber.

7. The system as described in claim 6, characterized in that, The outer surface of the balloon is provided with ribs for anti-slip purposes.

8. The system as described in claim 6, characterized in that, The balloon is equipped with a imaging ring for displaying position.

9. A pressure pump for rapid pressurization and depressurization, characterized in that, The pressure pump includes the components as described in any one of claims 1-5, and a snap-fit ​​assembly; The latching assembly includes a first latching part disposed on the push rod and a second latching part disposed on the inner cylinder that cooperates with the first latching part; the relative position of the push rod and the inner cylinder is controlled by the cooperation of the first latching part and the second latching part: when the first latching part and the second latching part are disengaged, the push rod slides freely in the inner cylinder; when the first latching part and the second latching part are engaged, the push rod is fixed relative to the inner cylinder.

10. The pressure pump as claimed in claim 9, characterized in that, The first latching part is a threaded section; and / or, the second latching part includes a reset member, a fitting member, and a pusher member, wherein the reset member and the fitting member are fixedly connected, the fitting member is used to engage with the first latching part, and the pusher member is fixedly connected to the side of the fitting member opposite to the reset member.

11. The pressure pump as claimed in claim 9, characterized in that, A control key is provided on the inner cylinder to control the movement of the second latching part. One end of the control key is rotatably fixed to the inner cylinder, and the middle part of the control key, near the inner cylinder, abuts against the second latching part to provide upward support for the control key.

12. The pressure pump as claimed in claim 11, characterized in that, The inner cylinder is provided with a baffle to protect the control key and prevent accidental operation. The baffle is provided with a track, and the outer end of the control key slides along the track.

13. The pressure pump as described in claim 12, characterized in that, The track is located on the side of the baffle near the control key.

14. The pressure pump as claimed in claim 12, characterized in that, The track is a groove for accommodating the outer end of the control key, which is accommodated in the groove and can slide along the groove.

15. The pressure pump as claimed in claim 12, characterized in that, A buffer spring is provided in the space enclosed by the track, the inner cylinder, and the control key to buffer the downward pressure of the control key and accelerate the rebound of the control key.

16. The pressure pump as claimed in claim 15, characterized in that, One end of the buffer spring is fixedly connected to the outer end of the control key, and the other end is fixedly connected to the inner cylinder.

17. The pressure pump as claimed in claim 15, characterized in that, The buffer spring is disposed along the track and extends along the track.

18. The pressure pump as claimed in claim 12, characterized in that, The baffle is provided with a track, and a buffer spring is provided in the track. The outer end of the control key slides along the track. The buffer spring is used to buffer the downward pressure of the control key and accelerate the rebound of the control key.

19. The pressure pump as claimed in claim 12, characterized in that, The pressure pump includes a pressure gauge, a conduit, and a three-way valve. The pressure gauge is located at the far end of the outer cylinder and is in fluid communication with the outer cylinder. The proximal end of the conduit is fixedly connected to the farthest end face of the outer cylinder and is in fluid communication with the inner cylinder. The other end of the conduit is connected to the three-way valve.

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