Balloon pressure pump

Abstract

The utility model discloses a balloon pressure pump which is characterized in that a clamping groove and a plurality of groups of first clamping parts are arranged on the inner wall of a pump shell, an elastic piece and a plurality of groups of second clamping parts are arranged on the outer wall of a piston cylinder, a first clamping gap is formed between every two adjacent first clamping parts, and a second clamping gap is formed between every two adjacent second clamping parts. The second clamping part is installed in the pump shell through the first clamping gap, the first clamping part is installed in the second clamping gap till the pump shell abuts against the abutting ring, then the piston cylinder is rotated till the elastic piece is clamped with the clamping groove, and the first clamping part is clamped with the second clamping part, and the elastic piece is clamped with the clamping groove, so that stress at the clamping position is more uniform; the structure can improve the structural strength of the joint of the pump shell and the piston barrel, has good sealing performance, effectively solves the technical problem that in the prior art, the piston barrel and the pump shell are bonded through manual glue smearing, and looseness or breakage is prone to occurring, and is high in practicability and suitable for large-scale production and use.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a balloon pressure pump. Background Art

[0002] As a relatively advanced and effective treatment method for cardiovascular diseases at present, interventional therapy has developed very rapidly. A balloon pressure pump is required in interventional treatment surgeries such as cardiovascular stenosis and blockage. During the surgery, the balloon pressure pump is operated to inject solutions such as contrast agents or normal saline into the affected area of the patient, facilitating the doctor to clearly monitor the affected area of the patient through computed tomography technology. In addition, during the surgery, an expansion stent is often needed to support and expand the affected area, and the balloon pressure pump can also perform operations such as pressurizing, depressurizing, and negative pressure evacuation on the balloon at the expansion stent.

[0003] The commonly used balloon pressure pumps on the existing market mainly include a pump housing, a piston rod, and a piston cylinder. The piston cylinder is bonded to the inner wall of the pump housing. During assembly, glue is often applied to the piston cylinder and the inner wall of the pump housing by manual gluing, which is prone to uneven application, resulting in insufficient connection strength between the two, and loosening or breaking. Therefore, for the balloon pressure pump in the prior art, the method of bonding the piston cylinder and the pump housing by manual application of glue has the technical defect of being prone to loosening or breaking. Summary of the Utility Model

[0004] A balloon pressure pump provided by the utility model aims to solve the technical defect that the method of bonding the piston cylinder and the pump housing of the balloon pressure pump in the prior art by manual application of glue is prone to loosening or breaking.

[0005] The utility model discloses a balloon pressure pump, including: a pump housing, an installation channel is arranged inside the pump housing, a piston cylinder, part of the piston cylinder is accommodated in the installation channel and is clamped on one side of the pump housing, a piston cavity is arranged inside the piston cylinder, the piston cavity is communicated with the installation channel, the piston cylinder includes a relatively arranged first opening and a first outlet, the first opening is clamped on one side of the pump housing, the first outlet is arranged at the bottom of the piston cylinder, a piston rod, the piston rod movably penetrates through the installation channel and extends into the inside of the piston cylinder, the piston rod reciprocates along the inner side wall of the piston cylinder, a plurality of groups of first clamping parts are arranged at intervals along the circumferential direction on the inner wall of the pump housing, a plurality of groups of second clamping parts are arranged at intervals along the circumferential direction on the outer wall of the piston cylinder, and the first clamping parts and the second clamping parts are clamped with each other.

[0006] Wherein, a clamping groove is arranged on the inner wall of the pump housing, an elastic sheet is arranged at the corresponding position on the outer wall of the piston cylinder, and the elastic sheet is clamped with the clamping groove.

[0007] Preferably, one end of the elastic piece is connected to the piston cylinder, and there is an included angle between the elastic piece and the tangential direction of the piston cylinder.

[0008] Preferably, there is a first clamping gap between adjacent first clamping parts, and a second clamping gap between adjacent second clamping parts. The first clamping gap is larger than the width of the second clamping part, and the second clamping gap is larger than the width of the first clamping part. The first clamping part is arranged at the edge position of the inner wall of the pump housing. An abutting ring is arranged along the circumference on the outer wall of the piston cylinder, and the second clamping part is arranged on the side of the abutting ring close to the pump housing.

[0009] Specifically, the first clamping part includes a plurality of first protrusions arranged at intervals along the axial direction of the pump housing. The first protrusions protrude from the inner wall of the pump housing, and the plurality of first protrusions are arranged in parallel; the second clamping part includes a plurality of second protrusions arranged at intervals along the axial direction of the piston cylinder. The second protrusions protrude from the outer wall of the piston cylinder, and the plurality of second protrusions are arranged in parallel. The first protrusions and the second protrusions are clamped with each other.

[0010] Preferably, the clamping groove is arranged on the side of the first protrusion away from the piston cylinder; the elastic piece is arranged on the side of the second protrusion away from the abutting ring.

[0011] Optionally, a relief groove is arranged on the inner wall of the pump housing. The relief groove is arranged beside the clamping groove, and a guiding inclined surface is arranged on the side of the relief groove close to the clamping groove.

[0012] Optionally, a stop strip is further arranged on the inner wall of the pump housing. The stop strip is arranged on the side of one of the first clamping parts away from the clamping groove.

[0013] Wherein, an elastic piece groove is arranged on the inner wall of the piston cylinder. The position of the elastic piece groove corresponds to that of the elastic piece, and one end of the elastic piece is connected to the elastic piece groove.

[0014] The balloon pressure pump further includes: a catheter component and a pressure gauge. The catheter component is arranged at the bottom of the piston cylinder and is connected to the first outlet. The catheter component is communicated with the piston chamber; the pressure gauge is arranged outside the piston cylinder, and the pressure gauge is communicated with the piston chamber.

[0015] A balloon pressure pump disclosed by the present utility model is provided with a clamping groove and multiple groups of first clamping parts on the inner wall of a pump housing, and a spring piece and multiple groups of second clamping parts on the outer wall of a piston barrel. A first clamping gap is provided between adjacent first clamping parts, and a second clamping gap is provided between adjacent second clamping parts. During assembly, the second clamping parts are inserted into the pump housing from the first clamping gap, and the first clamping parts are inserted into the second clamping gap until the pump housing abuts against a butting ring. Subsequently, the piston barrel is rotated until the spring piece is clamped with the clamping groove. By clamping the first clamping parts with the second clamping parts and abutting the spring piece against the clamping groove, the force during clamping is more uniform, the structural strength of the connection between the pump housing and the piston barrel can be improved, and it has better sealing performance, effectively solving the technical problem that the connection between the piston barrel and the pump housing in the prior art by manually applying glue is prone to loosening or breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is the overall structure diagram of the balloon pressure pump disclosed by the embodiment of the present utility model;

[0018] Figure 2 is the cross-sectional view of the balloon pressure pump disclosed by the embodiment of the present utility model;

[0019] Figure 3 is the structure diagram of the pump housing disclosed by the embodiment of the present utility model;

[0020] Figure 4 is the structure diagram of the piston barrel disclosed by the embodiment of the present utility model;

[0021] Figure 5 is disclosed by the embodiment of the present utility model Figure 1 is the enlarged structure diagram of part A therein;

[0022] REFERENCE MARKS:

[0023] 1. Pump housing; 11. First clamping part; 111. First rib; 12. Stop bar; 13. First rib gap; 14. Clamping groove; 15. First clamping gap; 16. Avoidance groove; 161. Guide inclined surface; 2. Piston cylinder; 21. Second clamping part; 211. Second rib; 2111. Second rib gap; 22. Elastic piece; 23. Elastic piece groove; 24. Second clamping gap; 25. Contact ring; 261. First opening; 262. First outlet; 3. Piston rod; 32. Thread; 4. Pressure relief ring; 41. Contact part; 42. Threaded connection part; 5. Pressure relief button; 6. Conduit component; 7. Pressure gauge; 71. Pressure gauge installation part; Detailed implementation manners

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprise" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0026] It should also be understood that the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0027] It should be further understood that the term "and / or" used in the specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0028] The above are only the specific implementation manners of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

[0029] The present invention discloses a balloon pressure pump, as Figures 1 - 5As shown in the figure, it includes: a pump housing 1, an installation channel is provided inside the pump housing 1, a piston cylinder 2, a part of the piston cylinder 2 is accommodated in the installation channel and is clamped on one side of the pump housing 1, a piston chamber is provided inside the piston cylinder 2, the piston chamber is communicated with the installation channel, the piston cylinder 2 includes a first opening 261 and a first outlet 262 which are oppositely arranged, the first opening 261 is arranged at one end of the piston cylinder 2 close to the pump housing 1, the first opening 261 is clamped on one side of the pump housing 1, the first outlet 262 is arranged at the bottom of the piston cylinder 2, a piston rod 3, the piston rod 3 movably passes through the installation channel and extends into the inside of the piston cylinder 2. During use, the piston rod 3 reciprocates along the inner side wall of the piston cylinder 2. A plurality of groups of first clamping parts 11 are arranged at intervals along the circumferential direction on the inner wall of the pump housing 1, and a plurality of groups of second clamping parts 21 are arranged at intervals along the circumferential direction on the outer wall of the piston cylinder 2. Specifically, the second clamping part 21 is arranged on the outer wall of the first opening 261, and the first clamping part 11 is clamped with the second clamping part 21. During assembly, when the piston cylinder 2 is inserted into the pump housing 1 and then rotated by a preset angle, the first clamping part 11 and the second clamping part 21 can be clamped tightly. The operation is simple. The effective clamping of the first clamping part 11 and the second clamping part 21 can ensure the tight assembly of the piston cylinder 2 and the pump housing 1, prevent gas or liquid leakage, ensure the reliable quality and safe use of the balloon pressure pump. Moreover, the manufacturing cost of the clamping structure is relatively low, and it can be applied to large-scale production and use.

[0030] In this embodiment, a thread 32 is provided on the outer peripheral wall of the piston rod 3, and it is threadedly connected to the inner side wall of the pump housing 1 through the thread 32. Please refer to Figures 1 - 2 , during pressurization, the piston rod 3 is manually rotated downward to achieve pressurization. The method of rotating the piston rod 3 for pressurization can provide a more uniform pressure distribution, reduce the problem of excessive local pressure, thereby reducing the wear and damage of parts; moreover, the method of rotating the piston rod 3 for pressurization has a higher pressurization efficiency and can complete the pressurization process faster, improving the work efficiency; further, the method of rotating the piston rod 3 for pressurization can also achieve a greater pressurizing force and is applicable to various application scenarios of the balloon pressure pump; compared with the traditional method of pushing the piston rod for pressurization, the method of rotating the piston rod 3 for pressurization has excellent performance in terms of pressure distribution, pressurization efficiency, pressurizing force, etc.

[0031] Specifically, a pressure relief ring 4 that can move circumferentially along the piston rod 3 is provided inside the pump housing 1 for relieving pressure after pressurization. The pressure relief ring 4 is movably sleeved on the piston rod 3. The pressure relief ring 4 includes a screwing portion 42 and an abutting portion 41. The screwing portion 42 and the abutting portion 41 are connected into a ring shape. Both the screwing portion 42 and the abutting portion 41 are disposed outside the piston rod 3. The screwing portion 42 is screwed with the piston rod 3. The balloon pressure pump further includes a pressure relief button 5. The pressure relief button 5 extends into the pump housing 1 and abuts against the abutting portion 41 of the pressure relief ring 4. Pressing the pressure relief button 5 can cause the pressure relief ring 4 to move inside the pump housing 1, disconnecting the threaded connection between the piston rod 3 and the screwing portion 42, and the abutting portion 41 moves towards the piston rod 3 to release the piston rod 3. When pressure relief is required, manually press the pressure relief button 5. The pressure relief button 5 abuts against the pressure relief ring 4 and drives the pressure relief ring 4 to disengage from the piston rod 3. The piston rod 3 loses the acting force of the pressure relief ring 4 and is pushed by the high pressure in the piston cylinder 2 to move for pressure relief. After the pressure relief is completed, release the pressure relief button 5, and the pressure relief ring 4 returns to its original position. The screwing portion 42 and the piston rod 3 resume screwing and lock the piston rod 3.

[0032] Wherein, a clamping groove 14 is provided on the inner wall of the pump housing 1, and elastic pieces 22 are provided at corresponding positions on the outer wall of the piston cylinder 2. The elastic pieces 22 are clamped with the clamping groove 14. In this embodiment, the clamping groove 14 is provided on the side of the first clamping portion 11 away from the piston cylinder 2, and the elastic pieces 22 are provided on the side of the second clamping portion 21 close to the pump housing 1. As the piston cylinder 2 rotates, the elastic pieces 22 rotate to the clamping groove 14 and are clamped with the clamping groove 14. A stop surface is further provided on one side of the clamping groove 14 for stopping the elastic pieces 22. When the elastic pieces 22 move to the stop surface, they stop moving to limit the piston cylinder 2 in the rotational direction and further restrict the rotation of the piston cylinder 2.

[0033] Specifically, please refer to Figure 4 , one end of the elastic piece 22 is connected to the piston cylinder 2, and an angle is provided between the elastic piece 22 and the tangential direction of the piston cylinder 2. This setting can ensure that the elastic piece 22 can be smoothly clamped into the clamping groove 14. In this embodiment, the elastic piece 22 is a plastic elastic piece that can undergo elastic deformation when compressed. When the piston cylinder 2 is installed in the pump housing 1, the pump housing 1 applies a force to the elastic piece 22, and the elastic piece 22 deforms and abuts against the inner wall of the pump housing 1.

[0034] Specifically, please refer to Figures 3 - 4, a first latching gap 15 is provided between adjacent first latching portions 11, a second latching gap 24 is provided between adjacent second latching portions 21, the first latching gap 15 is larger than the width of the second latching portion 21, and the second latching gap 24 is larger than the width of the first latching portion 11. When assembling, the second latching portion 21 can be smoothly inserted into the pump housing through the first latching gap 15, and the first latching portion 11 can be smoothly inserted into the second latching gap 24. The first latching portion 11 is provided at the edge position of the inner wall of the pump housing 1. An abutting ring 25 is provided along the circumference of the outer wall of the piston barrel 2. The second latching portion 21 is provided on the side of the abutting ring 25 close to the pump housing 1. When the assembly is completed, the pump housing 1 abuts against the abutting ring 25. During installation, the first latching portion 11 is aligned with the second latching gap 24, the second latching portion 21 is aligned with the first latching gap 15, the piston barrel 2 is inserted into the pump housing 1, and when the pump housing 1 abuts against the abutting ring 25, it is considered that the installation is in place. Subsequently, the pump housing 1 is rotated so that the first latching portion 11 is latched with the second latching portion 21, and the elastic piece 22 rotates to the latching groove 14 for further latching and fixing.

[0035] Specifically, the first latching portion 11 includes a plurality of first ridges 111 arranged at intervals along the axial direction of the pump housing 1. The first ridges 111 protrude from the inner wall of the pump housing 1. The plurality of first ridges 111 are arranged in parallel. A first ridge gap 13 is provided between adjacent two first ridges 111. The second latching portion 21 includes a plurality of second ridges 211 arranged at intervals along the axial direction of the piston barrel 2. The second ridges 211 protrude from the outer wall of the piston barrel 2. The plurality of second ridges 211 are arranged in parallel. A second ridge gap 2111 is provided between adjacent two second ridges 211. The width of the first ridge gap 13 is adapted to the second ridge 211, and the width of the second ridge gap 2111 is adapted to the first ridge 111. When installing, the first ridge 111 can be screwed into the second ridge gap 2111, and the second ridge 211 can be screwed into the first ridge gap 13. The first ridge 111 is accommodated in the second ridge gap 2111, and the second ridge 211 is accommodated in the first ridge gap 13 to realize the mutual latching of the first ridge 111 and the second ridge 211. In this embodiment, the number of the first ridges 111 is 2, and the number of the second ridges 211 is 2. Each first ridge 111 is latched and fixed with each second ridge 211. This parallel latching structure makes the force during latching more uniform, can improve the structural strength of the connection between the pump housing 1 and the piston barrel 2, and has better sealing performance.

[0036] Specifically, the latching groove 14 is provided on the side of the first ridge 111 away from the piston barrel 2. The elastic piece 22 is provided on the side of the second ridge 211 away from the abutting ring 25, so that when the first ridge 111 and the second ridge 211 are completely latched, the elastic piece 22 is snapped into the latching groove 14.

[0037] Among them, an avoidance groove 16 is provided on the inner wall of the pump housing 1. The avoidance groove 16 is provided beside the clamping groove 14. In this embodiment, the avoidance groove 16 is recessed in the inner wall of the pump housing 1 and the position of the avoidance groove 16 corresponds to one of the first clamping gaps 15. After the piston cylinder 2 is inserted into the pump housing 1, the elastic piece 22 is located in the avoidance groove 16. During rotation, the elastic piece 22 moves in the avoidance groove 16. The avoidance groove 16 provides space for the movement of the elastic piece 22 to prevent the elastic piece 22 from interfering with the inner wall of the pump housing 1 and damaging the inner wall of the pump housing 1. A guiding inclined surface 161 is further provided on one side of the avoidance groove 16 close to the clamping groove 14. The elastic piece 22 is guided into the clamping groove 14 through the guiding inclined surface 161 to realize the clamping of the elastic piece 22 and the clamping groove 14. A marking point (not shown in the figure) is further provided on the outer wall of the pump housing 1. The position of the marking point corresponds to the position of the avoidance groove 16. During installation, the elastic piece 22 of the piston cylinder 2 is aligned with the marking point, and the piston cylinder 2 is inserted into the pump housing 1 so that the elastic piece 22 enters the avoidance groove 16.

[0038] Among them, a stop strip 12 is further provided on the inner wall of the pump housing 1. Please refer to Figure 5 , the stop strip 12 is provided on one side of one of the first clamping portions 11 away from the clamping groove 14. In this embodiment, the stop strip 12 is arranged perpendicular to the first clamping portion 11, and the stop strip 12 abuts against the first clamping portion 11. The avoidance groove 16 and the clamping groove 14 are arranged in sequence in the clockwise direction. The stop strip 12 is arranged on one side of one of the first clamping portions 11 away from the clamping groove 14 in the clockwise direction. The distance between the stop strip 12 and the adjacent other first clamping portion 11 should be greater than the width of the second clamping portion 21 so that the second clamping portion 21 can be smoothly inserted into the pump housing 1.

[0039] Among them, an elastic piece groove 23 is provided on the inner wall of the piston cylinder 2. The position of the elastic piece groove 23 corresponds to the elastic piece 22. One end of the elastic piece 22 is connected to the elastic piece groove 23. Specifically, the elastic piece groove 23 is recessed in the inner wall of the piston cylinder 2. When the elastic piece 22 is deformed under pressure, a part of the structure of the elastic piece 22 enters the elastic piece groove 23, which can prevent the elastic piece 22 from squeezing the inner wall of the piston cylinder 2 when deforming, and avoid the situation that the elastic piece 22 is broken due to extrusion and the inner wall of the piston cylinder 2 is damaged.

[0040] The balloon pressure pump in this embodiment further includes: a catheter component 6 and a pressure gauge 7. The catheter component 6 is disposed at the bottom of the piston cylinder 2 and is connected to the first outlet 262. The catheter component 6 is in communication with the piston chamber. The catheter component 6 is made of a flexible material with good ductility and is used to be inserted into a patient's body for treating the patient. The pressure gauge 7 is disposed outside the piston cylinder 2 and is in communication with the piston chamber. Specifically, the pressure gauge 7 is installed outside the piston cylinder 2 through a pressure gauge mounting portion 71. The pressure gauge 7 is used to display the pressure of the balloon pressure pump. In specific implementation, the pressure of the balloon pressure pump can be clearly displayed through the reading of the pressure gauge 7, improving the safety of using the balloon pressure pump.

[0041] In a specific embodiment, a first clamping gap 15 is provided between adjacent first clamping portions 11, and a second clamping gap 24 is provided between adjacent second clamping portions 21. The first clamping gap 15 is larger than the width of the second clamping portion 21, and the second clamping gap 24 is larger than the width of the first clamping portion 11. The first clamping portion 11 includes two first ridges 111 arranged in parallel, and the second clamping portion 21 includes two second ridges 211 arranged in parallel. An avoidance groove 16 is provided on the side of the first clamping portion 11 away from the piston cylinder 2, and the position of the avoidance groove 16 corresponds to the position of the first clamping gap 15. A clamping groove 14 is provided beside the avoidance groove 16. The avoidance groove 16 and the clamping groove 14 are arranged in a clockwise direction in sequence. A stop bar 12 is arranged on the side of one of the first clamping portions 11 away from the clamping groove 14 in a clockwise direction. The stop bar 12 is perpendicularly arranged with the first clamping portion 11 and abuts against it. A spring piece 22 is arranged on the outer wall of the piston cylinder 2. During assembly, the first ridge 111 is aligned with the second clamping gap 24, and the second ridge 211 is aligned with the first clamping gap 15. The piston cylinder 2 is inserted into the pump housing 1 until the pump housing 1 abuts against the abutting ring 25. The pump housing 1 and the piston cylinder 2 are rotated to make the first ridge 111 and the second ridge 211 engage with each other. During the rotation of the piston cylinder 2, the spring piece 22 is driven to move in the avoidance groove 16. The spring piece 22 enters the clamping groove 14 through the guiding inclined surface 161, and the spring piece 22 engages with the clamping groove 14. The second ridge 211 abuts against the stop bar 12, further realizing the limit of the piston cylinder 2 in the rotational direction and clamping the piston cylinder 2 and the pump housing 1 tightly.

[0042] A balloon pressure pump disclosed by the utility model respectively sets a clamping groove and multiple groups of first clamping parts on the inner wall of the pump housing, and respectively sets elastic pieces and multiple groups of second clamping parts on the outer wall of the piston cylinder. A first clamping gap is arranged between adjacent first clamping parts, and a second clamping gap is arranged between adjacent second clamping parts. During assembly, the second clamping part is inserted into the pump housing from the first clamping gap, and the first clamping part is inserted into the second clamping gap until the pump housing abuts against the abutting ring. Then, the piston cylinder is rotated until the elastic piece is clamped with the clamping groove. Through the clamping of the first clamping part and the second clamping part and the abutting of the elastic piece and the clamping groove, the pump housing and the piston cylinder are effectively clamped, the force at the connection between the pump housing and the piston cylinder is more uniform, the structural strength of the connection is also enhanced, and it has better sealing performance, effectively solving the technical problem that the connection between the piston cylinder and the pump housing in the prior art using artificial glue application is prone to looseness or fracture. It has strong practicability and is suitable for large-scale production and use.

[0043] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any equivalent modifications or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A balloon pressure pump, comprising: Pump housing, an installation channel is provided inside the pump housing, a piston cylinder, a part of the piston cylinder is accommodated in the installation channel and is clamped to one side of the pump housing, a piston cavity is provided inside the piston cylinder, the piston cavity is communicated with the installation channel, the piston cylinder includes a relatively arranged first opening and a first outlet, the first opening is clamped to one side of the pump housing, the first outlet is arranged at the bottom of the piston cylinder, a piston rod, the piston rod movably penetrates through the installation channel and extends into the inside of the piston cylinder, the piston rod reciprocates along the inner side wall of the piston cylinder, and it is characterized in that a plurality of groups of first clamping parts are arranged at intervals along the circumferential direction on the inner wall of the pump housing, a plurality of groups of second clamping parts are arranged at intervals along the circumferential direction on the outer wall of the piston cylinder, and the first clamping parts and the second clamping parts are clamped to each other.

2. The balloon pressure pump according to claim 1, wherein, A clamping groove is provided on the inner wall of the pump housing, an elastic sheet is provided at a corresponding position on the outer wall of the piston cylinder, and the elastic sheet is clamped to the clamping groove.

3. The balloon pressure pump according to claim 2, wherein One end of the elastic sheet is connected to the piston cylinder, and an included angle is provided between the elastic sheet and the tangential direction of the piston cylinder.

4. The balloon pressure pump according to claim 1, wherein A first clamping gap is provided between adjacent first clamping parts, a second clamping gap is provided between adjacent second clamping parts, the first clamping gap is larger than the width of the second clamping part, the second clamping gap is larger than the width of the first clamping part, the first clamping part is arranged at the edge position of the inner wall of the pump housing, an abutting ring is arranged along the circumferential direction on the outer wall of the piston cylinder, and the second clamping part is arranged on the side of the abutting ring close to the pump housing.

5. The balloon pressure pump according to claim 1, wherein The first clamping part includes a plurality of first ridges arranged at intervals along the axial direction of the pump housing, the first ridges protrude from the inner wall of the pump housing, and the plurality of first ridges are arranged in parallel; the second clamping part includes a plurality of second ridges arranged at intervals along the axial direction of the piston cylinder, the second ridges protrude from the outer wall of the piston cylinder, and the plurality of second ridges are arranged in parallel, and the first ridges and the second ridges are clamped to each other.

6. The balloon pressure pump according to claim 2, wherein The clamping groove is arranged on the side of the first ridge away from the piston cylinder; the elastic sheet is arranged on the side of the second ridge away from the abutting ring.

7. The balloon pressure pump according to claim 2, characterized in that, A avoiding groove is provided on the inner wall of the pump housing, the avoiding groove is arranged beside the clamping groove, and a guiding inclined surface is provided on the side of the avoiding groove close to the clamping groove.

8. The balloon pressure pump according to claim 2, wherein, A stop strip is further provided on the inner wall of the pump housing, and the stop strip is arranged on the side of one of the first clamping parts away from the clamping groove.

9. The balloon pressure pump according to claim 2, wherein An elastic sheet groove is provided on the inner wall of the piston cylinder, the position of the elastic sheet groove corresponds to the elastic sheet, and one end of the elastic sheet is connected to the elastic sheet groove.

10. The balloon pressure pump according to claim 1, characterized in that, Further included: A conduit component and a pressure gauge, the conduit component is arranged at the bottom of the piston cylinder and is connected to the first outlet, the conduit component is communicated with the piston cavity; the pressure gauge is arranged on one side of the piston cylinder, and the pressure gauge is communicated with the piston cavity.

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