Pressure balloon expansion device convenient to operate

Abstract

The utility model discloses a pressure balloon expansion device convenient to operate, and relates to the technical field of balloon expansion pressure pumps, the pressure balloon expansion device comprises a pressure-resistant cylinder, the inner wall of the pressure-resistant cylinder is respectively connected with a front piston and a rear frame in a sliding mode, and an air guide pipe is fixedly installed between the opposite surfaces of the front piston and the rear frame. A reciprocating transmission mechanism for driving the rear frame to reciprocate back and forth is installed on the inner wall of the pressure-resistant cylinder, the reciprocating transmission stroke of the reciprocating transmission mechanism to the rear frame can be adjusted, an expansion head assembly is installed at the end of the pressure-resistant cylinder, and a multi-valve switching mechanism for controlling positive pressure inflation or negative pressure exhaust of the expansion head assembly is installed in the pressure-resistant cylinder. According to the utility model, the positive pressure inflation rate or the negative pressure exhaust efficiency of the expansion device can be accurately and automatically controlled, so that the working state of the expansion device can be accurately and conveniently operated.

Description

Technical Field

[0001] The utility model relates to the technical field of balloon expansion pressure pumps, in particular to a pressure balloon expansion device that is easy to operate. Background Art

[0002] A balloon inflation pressure pump is a medical device that applies pressure to a balloon inflation catheter to expand blood vessels or place a stent.

[0003] In the prior art, a patent document with publication number CN213220428U discloses a balloon expansion pressure pump with a stroke adjustment device. When the pressure balloon expansion device is in use, on the one hand, it is not convenient to achieve the switching of the expansion device between the positive pressure inflation state or the negative pressure exhaust state by changing the displacement direction of the piston body; on the other hand, it is not convenient to accurately and automatically control the positive pressure inflation rate or the negative pressure exhaust efficiency of the expansion device, and then it is not convenient for the precise operation of the working state of the expansion device. Based on this, the utility model provides a pressure balloon expansion device that is easy to operate. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an easy-to-operate pressure balloon expansion device, which solves the problem that the prior expansion device mentioned in the above background technology is not convenient for switching the expansion device between the positive pressure inflation state and the negative pressure exhaust state by changing the displacement direction of the piston body during use, and is not convenient for accurate automatic control of the positive pressure inflation rate or the negative pressure exhaust efficiency of the expansion device, which leads to inconvenience in precise operation of the working state of the expansion device.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an easy-to-operate pressure balloon expansion device, including a pressure-resistant cylinder, the inner wall of the pressure-resistant cylinder is slidably connected with a front piston and a rear frame respectively, an air guide tube is fixedly installed between the relative surfaces of the front piston and the rear frame, the inner wall of the pressure-resistant cylinder is installed with a reciprocating transmission mechanism for driving the rear frame to reciprocate forward and backward, the reciprocating transmission mechanism is adjustable for the reciprocating transmission stroke of the rear frame, an expansion head assembly is installed at the end of the pressure-resistant cylinder, and a multi-valve switching mechanism for controlling the positive pressure inflation or negative pressure exhaust of the expansion head assembly is installed inside the pressure-resistant cylinder.

[0006] Preferably, the multi-valve switching mechanism respectively includes a negative pressure chamber arranged inside the pressure-resistant cylinder and on the right side of the front piston, and a positive pressure chamber arranged between the opposite surfaces of the front piston and the pressure-resistant cylinder, the front end of the positive pressure chamber is fixedly connected with a valve tube, a valve ring is fixedly arranged at the connection point between the valve tube and the positive pressure chamber, a valve hole is fixedly arranged at the axial position of the valve ring, a one-way air intake valve is fixedly connected to the circumferential side of the valve tube, a sealing disk is slidably connected to the inner wall of the valve tube, the valve hole can be sealed by the sealing disk, a valve stem is fixedly installed at the axial position of the sealing disk, the circumferential side of the valve stem is slidably connected to the front piston, a valve plate is fixedly installed at the tail end of the valve stem and at a position corresponding to the front piston and the rear frame, a spring a is sleeved between the valve stems and at a position corresponding to the position between the front piston and the pressure-resistant cylinder and the position between the front piston and the valve plate, and a pressure relief assembly is installed at the axial position of the air guide pipe.

[0007] Preferably, the pressure relief components respectively include a pressure relief channel opened inside the air duct and connected with the positive pressure chamber, a group of air holes distributed in a circular array are opened inside the air duct, the circumferential side surface of the pressure relief channel is connected with the negative pressure chamber through the air holes, and a one-way air outlet valve connected with the negative pressure chamber is fixedly installed on the circumferential side surface of the pressure-resistant cylinder, and the one-way air outlet valve is sealed by a valve plate.

[0008] Preferably, the expansion head assembly comprises a connecting tube fixedly connected to the positive pressure chamber, a three-way valve is fixedly installed at the end of the connecting tube, and a male connector and a Luer connector are fixedly installed at the other two ends of the three-way valve respectively.

[0009] Preferably, a digital pressure gauge connected to the positive pressure chamber is fixedly mounted on the peripheral side of the pressure-resistant cylinder, an electric control box is fixedly mounted on the tail end of the pressure-resistant cylinder, a battery is built into the electric control box, and a control panel is fixedly mounted on the tail of the electric control box.

[0010] Preferably, the reciprocating transmission mechanism respectively includes a guide rod fixed between the inner surfaces of the rear frame and a transmission gear rack slidably connected to the guide rod, the axis of the guide rod is perpendicular to the axis of the pressure-resistant cylinder, the peripheral side surface of the guide rod is sleeved with a spring b that cooperates with the transmission gear rack, the inner wall of the pressure-resistant cylinder is rotatably connected to a transmission wheel driven by a motor, an air cavity is fixedly opened at the axial position of the transmission wheel, a transmission ring bag connected to the air cavity is fixedly installed on the peripheral side surface of the transmission wheel, the transmission gear rack is driven by the transmission ring bag, and a pressure regulating member for controlling the air volume inside the air cavity is installed inside the pressure-resistant cylinder.

[0011] Preferably, the pressure regulating component includes an air storage pipe fixed to the inner wall of the pressure-resistant cylinder, the inner wall of the air storage pipe is slidably connected with a pressure regulating plug, the inner wall of the air storage pipe is rotatably connected with a transmission screw, the peripheral side surface of the transmission screw is transmission-connected to the pressure regulating plug, and the ventilation port of the air storage pipe is rotationally connected to the air cavity.

[0012] The beneficial effects of the utility model are:

[0013] When the expansion device is in use, on the one hand, it can realize automatic switching of the positive pressure inflation state or the negative pressure exhaust state of the expansion device by changing the displacement direction of the piston body; on the other hand, it can also accurately and automatically control the positive pressure inflation rate or negative pressure exhaust efficiency of the expansion device, thereby facilitating accurate and convenient operation of the working state of the expansion device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic structural diagram of a pressure balloon expansion device that is easy to operate in the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the positive pressure chamber and the negative pressure chamber of the utility model;

[0017] Figure 3 This utility model Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0018] Figure 4 This utility model Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0019] Figure 5 This utility model Figure 2 A schematic diagram of the local enlarged structure at C in the middle;

[0020] Figure 6 It is a structural schematic diagram of the valve pipe and the one-way air intake valve of the utility model;

[0021] Figure 7 It is a structural schematic diagram of the transmission gear rack and spring b of the utility model.

[0022] The markings in the attached figure are: 1. pressure-resistant cylinder; 2. front piston; 3. rear frame; 4. air guide tube; 5. negative pressure chamber; 6. positive pressure chamber; 7. transmission screw; 8. valve tube; 9. valve ring; 10. one-way air inlet valve; 11. sealing disk; 12. valve stem; 13. valve plate; 14. spring a; 15. pressure discharge channel; 16. air vent; 17. one-way air outlet valve; 18. connecting pipe; 19. three-way valve; 20. digital pressure gauge; 21. control panel; 22. guide rod; 23. transmission gear rack; 24. spring b; 25. motor; 26. transmission wheel; 27. transmission ring bag; 28. air storage pipe; 29. ​​pressure regulating plug. DETAILED DESCRIPTION

[0023] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Figure 1-Figure 7 As shown, a pressure balloon expansion device that is easy to operate includes a pressure-resistant tube 1, an electric control box is fixedly installed at the tail end of the pressure-resistant tube 1, a battery is built in the electric control box, and a control panel 21 is fixedly installed at the tail of the electric control box;

[0026] The inner wall of the pressure-resistant cylinder 1 is slidably connected with the front piston 2 and the rear frame 3, and an air guide pipe 4 is fixedly installed between the opposite surfaces of the front piston 2 and the rear frame 3; the inner wall of the pressure-resistant cylinder 1 is installed with a reciprocating transmission mechanism for driving the rear frame 3 to reciprocate forward and backward, and the reciprocating transmission stroke of the rear frame 3 can be adjusted by the reciprocating transmission mechanism;

[0027] The reciprocating transmission mechanism includes a guide rod 22 fixed between the inner surfaces of the rear frame 3 and a transmission gear frame 23 slidably connected to the guide rod 22, and the axis of the guide rod 22 is perpendicular to the axis of the pressure-resistant cylinder 1;

[0028] The peripheral side surface of the guide rod 22 is sleeved with a spring b24 that cooperates with the transmission gear rack 23. The inner wall of the pressure-resistant cylinder 1 is rotatably connected to a transmission wheel 26 driven by a motor 25. An air cavity is fixedly opened at the axial position of the transmission wheel 26. A transmission ring bag 27 that is connected to the air cavity is fixedly installed on the peripheral side surface of the transmission wheel 26. The transmission gear rack 23 is driven by the transmission ring bag 27. A pressure regulating component for controlling the amount of air inside the air cavity is installed inside the pressure-resistant cylinder 1.

[0029] The pressure regulating component includes an air storage pipe 28 fixed to the inner wall of the pressure-resistant cylinder 1, the inner wall of the air storage pipe 28 is slidably connected with a pressure regulating plug 29, the inner wall of the air storage pipe 28 is rotatably connected with a transmission screw 7, the peripheral side of the transmission screw 7 is transmission-connected to the pressure regulating plug 29, and the ventilation port of the air storage pipe 28 is rotationally connected to the air cavity.

[0030] Before working, the position of the pressure regulating plug 29 inside the gas storage pipe 28 can be adjusted by driving the transmission screw 7. By changing the position of the pressure regulating plug 29 inside the gas storage pipe 28, the wheel diameter formed by the transmission ring bag 27 can be quickly changed. By changing the wheel diameter of the transmission ring bag 27, the driving stroke or driving distance of the transmission gear rack 23 within a single rotation cycle of the transmission ring bag 27 can be changed. By achieving the above technical effects, the single maximum displacement stroke of the front piston 2 and the rear rack 3 can be switched;

[0031] By changing the maximum reciprocating displacement stroke of the front piston 2 and the rear frame 3, the positive pressure inflation volume and the negative pressure exhaust volume in a single displacement cycle of the front piston 2 and the rear frame 3 are switched. By achieving the above technical effects, the inflation accuracy and inflation efficiency or the negative pressure exhaust accuracy and negative pressure exhaust efficiency of the device per unit time are adjusted;

[0032] By adjusting the inflation accuracy and inflation efficiency or the negative pressure exhaust accuracy and negative pressure exhaust efficiency of the device per unit time, the monitoring and display accuracy of the digital pressure gauge 20 per unit time can be improved;

[0033] An expansion head assembly is installed at the end of the pressure-resistant cylinder 1 , and a multi-valve switching mechanism for controlling positive pressure inflation or negative pressure exhaust of the expansion head assembly is installed inside the pressure-resistant cylinder 1 .

[0034] The multi-valve switching mechanism includes a negative pressure chamber 5 disposed inside the pressure-resistant cylinder 1 and on the right side of the front piston 2, and a positive pressure chamber 6 disposed between the front piston 2 and the opposite surface of the pressure-resistant cylinder 1. A digital pressure gauge 20 connected to the positive pressure chamber 6 is fixedly mounted on the peripheral side of the pressure-resistant cylinder 1.

[0035] The front end of the positive pressure chamber 6 is fixedly connected with a valve tube 8, and a valve ring 9 is fixedly arranged at the connection point between the valve tube 8 and the positive pressure chamber 6, and a valve hole is fixedly arranged at the axial position of the valve ring 9;

[0036] A one-way air inlet valve 10 is fixedly connected to the peripheral side of the valve tube 8, and a sealing disk 11 is slidably connected to the inner wall of the valve tube 8. The valve hole can be sealed by the sealing disk 11, and a valve stem 12 is fixedly installed at the axial position of the sealing disk 11;

[0037] The radius of the valve hole is 1.2 times the radius of the valve stem 12;

[0038] The circumferential side of the valve stem 12 is slidably connected with the front piston 2, and a valve plate 13 is fixedly installed at the tail end of the valve stem 12 and at a position corresponding to the position between the front piston 2 and the rear frame 3. A spring a14 is sleeved between the valve stem 12 and at a position corresponding to the position between the front piston 2 and the pressure-resistant cylinder 1 and the position between the front piston 2 and the valve plate 13;

[0039] A pressure relief assembly is installed at the axial position of the air guide pipe 4.

[0040] The pressure relief components include a pressure relief channel 15 which is opened inside the air duct 4 and connected to the positive pressure chamber 6. A group of air holes 16 distributed in a circular array are opened inside the air duct 4. The circumferential side surface of the pressure relief channel 15 is connected to the negative pressure chamber 5 through the air holes 16. A one-way air outlet valve 17 connected to the negative pressure chamber 5 is fixedly installed on the circumferential side surface of the pressure-resistant cylinder 1. The one-way air outlet valve 17 is sealed by a valve plate 13.

[0041] The expansion head assembly includes a connecting tube 18 fixedly connected to the positive pressure chamber 6, a three-way valve 19 is fixedly installed at the end of the connecting tube 18, and a male connector and a Luer connector are fixedly installed at the other two ends of the three-way valve 19 respectively.

[0042] Before working, the position of the pressure regulating plug 29 inside the gas storage pipe 28 can be adjusted by driving the transmission screw 7. By changing the position of the pressure regulating plug 29 inside the gas storage pipe 28, the wheel diameter formed by the transmission ring bag 27 can be quickly changed. By changing the wheel diameter of the transmission ring bag 27, the driving stroke or driving distance of the transmission gear rack 23 within a single rotation cycle of the transmission ring bag 27 can be changed. By achieving the above-mentioned technical effects, the single maximum displacement stroke of the front piston 2 and the rear frame 3 can be switched. By changing the single maximum reciprocating displacement stroke of the front piston 2 and the rear frame 3, the positive pressure inflation volume and the negative pressure exhaust volume within a single displacement cycle of the front piston 2 and the rear frame 3 can be switched. By achieving the above-mentioned technical effects, the inflation accuracy, inflation efficiency or negative pressure exhaust accuracy and negative pressure exhaust efficiency of the device per unit time can be adjusted. By adjusting the inflation accuracy, inflation efficiency or negative pressure exhaust accuracy and negative pressure exhaust efficiency of the device per unit time, the monitoring and display accuracy of the digital display barometer 20 can be improved.

[0043] When it is necessary to realize positive pressure inflation of the external pressure balloon, the transmission gear rack 23 reciprocates in the direction close to the positive pressure chamber 6 under the driving action of the motor 25, and then realizes positive pressure inflation of the external pressure balloon. When the transmission gear rack 23 reciprocates in the direction of the positive pressure chamber 6, the one-way air inlet valve 10 is connected with the positive pressure chamber 6, and the valve plate 13 seals the one-way air outlet valve 17;

[0044] When it is necessary to realize negative pressure exhaust or negative pressure vacuum of the external pressure balloon, the transmission gear rack 23 reciprocates in the direction away from the positive pressure chamber 6 under the driving action of the motor 25, and then realizes negative pressure inflation of the external pressure balloon. When the transmission gear rack 23 reciprocates in the direction away from the positive pressure chamber 6, the one-way air inlet valve 10 is sealed by the sealing disk 11, and the valve plate 13 loses the sealing effect on the one-way air outlet valve 17;

[0045] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A pressure balloon expansion device that is easy to operate, comprising a pressure-resistant cylinder (1), characterized in that: The inner wall of the pressure-resistant cylinder (1) is slidably connected to the front piston (2) and the rear frame (3), and an air guide tube (4) is fixedly installed between the relative surfaces of the front piston (2) and the rear frame (3). The inner wall of the pressure-resistant cylinder (1) is installed with a reciprocating transmission mechanism for driving the rear frame (3) to reciprocate forward and backward. The reciprocating transmission mechanism is adjustable for the reciprocating transmission stroke of the rear frame (3). An expansion head assembly is installed at the end of the pressure-resistant cylinder (1), and a multi-valve switching mechanism for controlling the positive pressure inflation or negative pressure exhaust of the expansion head assembly is installed inside the pressure-resistant cylinder (1).

2. The easy-to-operate pressure balloon expansion device according to claim 1, characterized in that: The multi-valve switching mechanism comprises a negative pressure chamber (5) arranged inside the pressure-resistant cylinder (1) and on the right side of the front piston (2), and a positive pressure chamber (6) arranged between the opposite surfaces of the front piston (2) and the pressure-resistant cylinder (1); the front end of the positive pressure chamber (6) is fixedly connected to a valve tube (8); a valve ring (9) is fixedly arranged at the connection point between the valve tube (8) and the positive pressure chamber (6); a valve hole is fixedly arranged at the axial position of the valve ring (9); a one-way air intake valve (10) is fixedly connected to the peripheral side of the valve tube (8); a sealing disk (11) is slidably connected to the inner wall of the valve tube (8); The valve hole can be sealed by a sealing disk (11), a valve stem (12) is fixedly installed at the axial position of the sealing disk (11), the peripheral side of the valve stem (12) is slidably connected to the front piston (2), a valve plate (13) is fixedly installed at the rear end of the valve stem (12) and at a position corresponding to the position between the front piston (2) and the rear frame (3), a spring a (14) is sleeved between the valve stem (12) and at a position corresponding to the position between the front piston (2) and the pressure-resistant cylinder (1) and the position between the front piston (2) and the valve plate (13), and a pressure relief assembly is installed at the axial position of the air guide pipe (4).

3. The easy-to-operate pressure balloon expansion device according to claim 2, characterized in that: The pressure relief components respectively include a pressure relief channel (15) opened inside the air guide tube (4) and connected to the positive pressure chamber (6); a group of air holes (16) distributed in a circular array are opened inside the air guide tube (4); the peripheral side surface of the pressure relief channel (15) is connected to the negative pressure chamber (5) through the air holes (16); the peripheral side surface of the pressure-resistant cylinder (1) is fixedly installed with a one-way air outlet valve (17) connected to the negative pressure chamber (5); the one-way air outlet valve (17) is sealed by a valve plate (13).

4. The easy-to-operate pressure balloon expansion device according to claim 3, characterized in that: The expansion head assembly comprises a connecting pipe (18) fixedly connected to the positive pressure chamber (6), a three-way valve (19) fixedly mounted on the end of the connecting pipe (18), and a male connector and a Luer connector fixedly mounted on the other two ends of the three-way valve (19).

5. The easy-to-operate pressure balloon expansion device according to claim 4, characterized in that: A digital pressure gauge (20) connected to the positive pressure chamber (6) is fixedly mounted on the peripheral side of the pressure-resistant cylinder (1), an electric control box is fixedly mounted on the tail end of the pressure-resistant cylinder (1), a storage battery is built into the electric control box, and a control panel (21) is fixedly mounted on the tail end of the electric control box.

6. The easy-to-operate pressure balloon expansion device according to claim 1, characterized in that: The reciprocating transmission mechanism comprises a guide rod (22) fixed between the inner surfaces of the rear frame (3) and a transmission gear rack (23) slidably connected to the guide rod (22); the axis of the guide rod (22) is perpendicular to the axis of the pressure-resistant cylinder (1); the peripheral side of the guide rod (22) is sleeved with a spring b (24) matched with the transmission gear rack (23); the inner wall of the pressure-resistant cylinder (1) is rotatably connected with a transmission wheel (26) driven by a motor (25); an air cavity is fixedly provided at the axial position of the transmission wheel (26); a transmission ring bag (27) connected to the air cavity is fixedly installed on the peripheral side of the transmission wheel (26); the transmission gear rack (23) is driven by the transmission ring bag (27); and a pressure regulating member for controlling the air volume inside the air cavity is installed inside the pressure-resistant cylinder (1).

7. The easy-to-operate pressure balloon expansion device according to claim 6, characterized in that: The pressure regulating component comprises an air storage pipe (28) fixed to the inner wall of the pressure-resistant cylinder (1); the inner wall of the air storage pipe (28) is slidably connected to a pressure regulating plug (29); the inner wall of the air storage pipe (28) is rotatably connected to a transmission screw (7); the peripheral side surface of the transmission screw (7) is transmission-connected to the pressure regulating plug (29); and the ventilation port of the air storage pipe (28) is rotationally connected to the air cavity.

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