A balloon expansion pressure pump

Abstract

The present invention provides a balloon expansion pressure pump, which includes a housing, a pressure application component, a pressure relief component, and a pressing component. Among them, the pressure application component includes a threaded push rod disposed inside the housing; the pressure relief component includes a clutch component and a limiting component, and a partial area of the inner peripheral wall of the clutch component is provided with an internal thread adapted to mesh with the threaded push rod. In the pressure application state, the elastic abutting component applies pressure to the clutch component, so that the internal thread meshes with the threaded push rod, and the threaded push rod is rotated to move towards the front end of the housing to pressurize the balloon; after the pressurization is completed, the pressure is relieved. In the pressure relief state, the pressing component is pressed, and the pressing component presses the clutch component towards the elastic abutting component. The clutch component moves downward against the elastic force of the elastic abutting component, so that the internal thread disengages from the threaded push rod, and the threaded push rod automatically resets and retreats under the action of the pressure in its housing cavity, completing the pressure relief, and the pressure relief operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a balloon expansion pressure pump. Background Art

[0002] A balloon dilation pressure pump is a medical device used in interventional therapy surgeries to pressurize a balloon dilation catheter and expand the balloon to achieve the purpose of dilating blood vessels or implanting a stent in the blood vessel. The balloon expansion pressure pump expands or contracts the balloon dilation catheter. It can fill the balloon with liquid as needed to change the balloon pressure and shape, expand the balloon during balloon dilation, detect the pressure inside the balloon, and contract the balloon, and pressurize, relieve pressure, and evacuate negative pressure on the balloon used for expanding the stent, etc., so that it expands and contracts to achieve the purpose of dilating blood vessels or releasing the stent. In the existing technology, the pressure relief operation of the balloon dilation pressure pump is inconvenient, and a relatively large force needs to be applied to the balloon dilation pressure pump to complete rapid pressure relief. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the pressure relief operation of the balloon dilation pressure pump in the existing technology is inconvenient.

[0004] For this purpose, the present invention provides a balloon expansion pressure pump, including

[0005] a housing;

[0006] a pressure application assembly, including a threaded push rod disposed in the housing;

[0007] a pressure relief assembly, including a clutch member and a limit assembly. The clutch member is sleeved outside the threaded push rod, and a partial area of the inner peripheral wall of the clutch member is provided with internal threads adapted to mesh with the threaded push rod; the limit assembly includes a support member having a receiving cavity and sleeved outside the threaded push rod and an elastic abutting member disposed in the housing. The clutch member is movably disposed in the receiving cavity, and a side of the clutch member opposite to the internal threads protrudes from the receiving cavity to form a connecting portion; one end of the elastic abutting member abuts against the clutch member;

[0008] a pressing assembly connected to the connecting portion; in the pressure application state, the elastic abutting member applies pressure to the clutch member to make the internal threads mesh with the threaded push rod; in the pressure relief state, when the pressing assembly is pressed, the pressing assembly presses the clutch member in the direction of the elastic abutting member to make the internal threads disengage from the threaded push rod.

[0009] Optionally, for the above-mentioned balloon expansion pressure pump, the pressing assembly includes

[0010] a pressing member protruding outside the housing;

[0011] The force - applying component has its first end hinged to the support component, and its second end extends towards the connecting portion. The middle part of the force - applying component is connected to the connecting portion to form a lever structure, and the second end of the force - applying component is fixed on the pressing component.

[0012] Optionally, in the above - mentioned balloon inflation pressure pump, a first groove is provided on the connecting portion, and the middle part of the force - applying component is clamped in the first groove.

[0013] Optionally, in the above - mentioned balloon inflation pressure pump, a clamping portion is provided on the support component opposite to the second end of the force - applying component. In the pressure - releasing state, when the pressing component is pressed to the bottom, the second end of the force - applying component is clamped and fixed on the clamping portion.

[0014] Optionally, in the above - mentioned balloon inflation pressure pump, the elastic abutting component is arranged on the support component.

[0015] Optionally, in the above - mentioned balloon inflation pressure pump, the limiting component further includes a guiding member arranged on the support component, and the elastic abutting component is sleeved outside the guiding member.

[0016] Optionally, in the above - mentioned balloon inflation pressure pump, a second groove is provided on the outer wall of the clutch component, and one end of the elastic abutting component is inserted into the second groove.

[0017] Optionally, in the above - mentioned balloon inflation pressure pump, at least two spaced - apart elastic abutting components are provided on the support component.

[0018] Optionally, in the above - mentioned balloon inflation pressure pump, an electronic pressure gauge is further included, which is arranged at the outlet end of the housing and communicated with the inner cavity of the housing.

[0019] Optionally, in the above - mentioned balloon inflation pressure pump, a pressure - sensing chip is provided inside the electronic pressure gauge.

[0020] The technical solution of the present invention has the following advantages:

[0021] 1. In the balloon inflation pressure pump provided by the present invention, during use, in the pressure - applying state, the elastic abutting component applies pressure to the clutch component, causing the internal thread to engage with the threaded push rod, and rotating the threaded push rod to make it move towards the front end of the housing to pressurize the balloon; after the pressurization is completed, the pressure is released. In the pressure - releasing state, pressing the pressing component, the pressing component presses the clutch component towards the elastic abutting component. The clutch component moves downward against the elastic force of the elastic abutting component, causing the internal thread to disengage from the threaded push rod. The threaded push rod automatically resets and retreats under the action of the pressure in its housing cavity to complete the pressure release, and the pressure - release operation is convenient. Description of the Drawings

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the balloon expansion pressure pump provided by the embodiment of the present invention;

[0024] Figure 2 Cross-sectional view of the balloon expansion pressure pump provided by the embodiment of the present invention;

[0025] Figure 3 For Figure 2 Partial enlarged view of part A in

[0026] Figure 4 Schematic diagram of the balloon expansion pressure pump after removing the housing provided by the embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the clutch component provided by the embodiment of the present invention;

[0028] Figure 6 Schematic diagram of the clutch component provided by the embodiment of the present invention;

[0029] Figure 7 Schematic diagram of the support component provided by the embodiment of the present invention.

[0030] Explanation of reference numerals:

[0031] 1 - Housing; 21 - Threaded push rod; 22 - Piston; 23 - Sealing ring; 31 - Clutch component; 311 - Connection part; 312 - Second groove; 321 - Support component; 3211 - Clamping part; 322 - Guide; 41 - Pressing component; 42 - Force - applying component; 5 - Electronic pressure gauge. Specific embodiments

[0032] The following will clearly and completely describe the technical solutions of the present invention with reference to the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Embodiment

[0037] This embodiment provides a balloon inflation pressure pump, as Figures 1 to 4 shown, which includes a housing 1, a pressure application assembly, a pressure relief assembly, and a pressing assembly. Among them, the pressure application assembly includes a threaded push rod 21 inserted into the housing 1; the pressure relief assembly includes a clutch member 31 and a limiting assembly. The clutch member 31 is sleeved outside the threaded push rod 21, and a partial area of the inner peripheral wall of the clutch member 31 is provided with an internal thread adapted to engage with the threaded push rod 21; the limiting assembly includes a support member 321 having a receiving cavity and sleeved outside the threaded push rod 21 and an elastic abutting member provided in the housing 1. The clutch member 31 is movably disposed in the receiving cavity, and a side of the clutch member 31 opposite to the internal thread protrudes from the receiving cavity to form a connecting portion 311; one end of the elastic abutting member abuts against the clutch member 31; the pressing assembly is connected to the connecting portion 311.

[0038] In the pressurizing state, the elastic abutting member applies pressure to the clutch member 31, causing the internal thread to engage with the threaded push rod 21. Rotate the threaded push rod 21 to move it towards the front end of the housing 1 to pressurize the balloon. After the pressurization is completed, depressurization is carried out. In the depressurization state, press the pressing assembly. The pressing assembly presses the clutch member 31 towards the elastic abutting member. The clutch member 31 moves downward against the elastic force of the elastic abutting member, causing the internal thread to disengage from the threaded push rod 21. The threaded push rod 21 automatically resets and retracts under the action of the pressure in the inner cavity of the housing 1, completing the pressure relief. The pressure relief operation is convenient.

[0039] Further, referring to Figure 3 and Figure 4 , the pressing assembly includes a pressing member 41 and a force applying member 42. Among them, the pressing member 41 protrudes outside the housing 1. Plug-in rods are provided on both sides of the pressing member 41. The plug-in rods are rotatably inserted through the housing 1 to rotatably connect the pressing member 41 to the housing 1. The first end ( Figure 4 the right end in Figure 4 ) of the force applying member 42 is hinged to the supporting member 321, and the second end ( Figure 4 the left end in

[0040] ) extends towards the connecting portion 311. The middle part of the force applying member 42 is connected to the connecting portion 311 to form a lever structure. The second end of the force applying member 42 is fixedly provided on the pressing member 41.

[0041] During depressurization, press the pressing member 41 downward. The pressing member 41 drives the second end of the force applying member 42 to move downward. The middle part of the pressing member 41 presses the clutch member 31 downward, causing the clutch member 31 to disengage from the threaded push rod 21. The force applying member 42 forms a lever structure on the supporting member 321. When pressing downward, only the second end of the force applying member 42 needs to be pressed to easily press down the clutch member 31. The operation is convenient and labor-saving.

[0041] Further, a first groove is provided on the connecting portion 311, and the middle part of the force applying member 42 is clamped in the first groove.

[0042] Optimally, the force applying member 42 is rod-shaped. A clamping portion 3211 is provided on the supporting member 321 opposite to the second end of the force applying member 42. An arc-shaped depression is provided at the top of the clamping portion 3211. In the depressurization state, when the pressing member 41 is pressed to the bottom, the second end of the force applying member 42 is clamped and fixed in the arc-shaped depression of the clamping portion 3211. When depressurizing, it is not necessary to keep pressing the pressing member 41 all the time, and continuous pressure relief can be achieved. When the pressure is large and the pressure relief time is long, the operation is labor-saving and convenient.

[0043] Refer to Figure 3, the elastic abutting member (not shown in the figure) is disposed on the support member 321. For example, the elastic abutting member is disposed in the accommodation cavity of the support member 321, one end thereof abuts against the inner wall of the support member 321, and the other end abuts against the outer wall of the clutch member 31. The elastic abutting member is disposed inside the support member 321, and the force applying member 42 is disposed on the top of the support member 321. When the force applying member 42 or the elastic abutting member is damaged during the pressure relief process, it is convenient to take out the support member 321 to replace the damaged member.

[0044] See Figure 3 and Figure 7 , the limiting assembly further includes a guiding member 322 disposed on the support member 321, and the elastic abutting member is sleeved outside the guiding member 322. The guiding member 322 is cylindrical, and the guiding member 322 is disposed on the inner wall of the accommodation cavity of the support member 321 and its top is disposed at a certain distance from the outer wall of the clutch member 31, guiding the elastic abutting member when it moves downward without affecting the downward movement of the clutch member 31. For example, the elastic abutting member is a spring.

[0045] See Figure 5 and Figure 6 , the lower half of the inner wall of the inner hole of the clutch member 31 is provided with an internal thread adapted to mesh with the threaded push rod 21. The internal thread can also be provided only on one-third, one-fourth or one-fifth of the inner wall of the inner hole of the clutch member 31, as long as the internal thread is sufficient to mesh with the threaded push rod 21 when the spring jacks up the support member 321 upward, and stable pressurization and pressure holding can be carried out.

[0046] Optimally, there are two elastic abutting members, which are symmetrically disposed on both sides of the internal thread, ensuring the smooth movement of both sides of the clutch member 31, ensuring the meshing effect between the internal thread and the threaded push rod 21, and enabling the clutch member 31 to move downward smoothly to disengage from the meshing.

[0047] See Figure 3 and Figure 6 , the outer wall of the clutch member 31 is provided with a second groove 312, and one end of the elastic abutting member is inserted into the second groove 312. The upper part of the guiding member 322 is inserted into the second groove 312, which is beneficial to the smooth compression and extension of the spring and ensures the smooth movement of the clutch member 31.

[0048] See Figure 1 and Figure 2, the balloon inflation pressure pump further includes an electronic pressure gauge 5 disposed at the outlet end of the housing 1 and communicating with the inner cavity of the housing 1. The electronic pressure gauge 5 facilitates accurate reading of the pressure value. The electronic pressure gauge 5 includes a core board and a pressure sensing chip disposed on the back of the core board and electrically connected to the core board. The pressure sensing chip measures more precisely than a ceramic pressure sensor. The pressure sensing chip is integrated on the display core board of the electronic pressure gauge 5. Compared with the prior art in which the sensor chip is disposed on the outlet of the housing 1, it is convenient to replace the electronic pressure gauge 5 as a whole.

[0049] See Figure 2 , a piston 22 is provided at the front end of the threaded push rod 21. The front end of the threaded push rod 21 is fixedly inserted into the piston 22. The piston 22 is hermetically and slidably disposed in the inner cavity of the housing 1. A sealing ring 23 is sleeved on the piston 22, and the sealing ring 23 improves the sealing performance between the piston 22 and the inner wall of the housing 1. See Figure 1 and Figure 2 , the front end of the housing 1 is connected to a nylon braided tube, and a luer swivel fitting adapted to be connected to a balloon catheter is provided at the front end of the nylon braided tube.

[0050] When the balloon inflation pressure pump is in use, it is connected to the balloon catheter through the luer swivel fitting. When pressurizing, the internal thread of the clutch member 31 meshes with the threaded push rod 21, and the threaded push rod 21 is rotated. The threaded push rod 21 advances to pressurize the balloon. When depressurizing, the pressing member 41 is pressed downward, and the pressing member 41 drives the force applying member 42 to press the clutch member 31 downward. The clutch member 31 disengages from the threaded push rod 21 to complete pressure relief.

[0051] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A balloon inflation pressure pump, characterized in that, including a housing (1); a pressure - applying assembly including a threaded push rod (21) disposed within the housing (1); a pressure - relieving assembly including a clutch member (31) and a limiting assembly. The clutch member (31) is sleeved outside the threaded push rod (21), and a partial region of the inner peripheral wall of the clutch member (31) is provided with an internal thread adapted to engage with the threaded push rod (21). The limiting assembly includes a support member (321) having a receiving cavity and sleeved outside the threaded push rod (21) and an elastic abutting member disposed within the housing (1). The clutch member (31) is movably disposed within the receiving cavity, and a side of the clutch member (31) opposite to the internal thread protrudes from the receiving cavity to form a connecting portion (311). One end of the elastic abutting member abuts against the clutch member (31); a pressing assembly connected to the connecting portion (311). In the pressure - applying state, the elastic abutting member applies pressure to the clutch member (31) to engage the internal thread with the threaded push rod (21). In the pressure - relieving state, when the pressing assembly is pressed, the pressing assembly presses the clutch member (31) towards the elastic abutting member to disengage the internal thread from the threaded push rod (21); The pressing assembly includes a pressing member (41) protruding outside the housing (1); a force - applying member (42) with its first end hinged to the support member (321) and its second end extending towards the connecting portion (311). The middle part of the force - applying member (42) is connected to the connecting portion (311) to form a lever structure, and the second end of the force - applying member (42) is fixed to the pressing member (41); a clamping portion (3211) is provided on the support member (321) opposite to the second end of the force - applying member (42). In the pressure - relieving state, when the pressing member ( 2. The balloon inflation pressure pump according to claim 1, wherein ​ 3. The balloon expansion pressure pump according to claim 1 or 2, characterized in that, ​ 4. The balloon expansion pressure pump according to claim 3, characterized in that, ​ 5. The balloon expansion pressure pump according to claim 4, wherein, ​ 6. The balloon inflation pressure pump according to claim 3, characterized in that, ​ 7. The balloon expansion pressure pump according to claim 1 or 2, characterized in that, ​ 8. The balloon inflation pressure pump according to claim 7, characterized in that, ​

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