Shock wave air source generating device, pressure adjusting method thereof and shock wave treatment equipment

Abstract

The invention belongs to the technical field of medical instruments and provides a shock wave air source generating device, a pressure adjusting method of the shock wave air source generating device and shock wave treatment equipment. The shock wave air source generating device comprises a compression air cylinder, a pushing assembly, an adjusting assembly and a controller; a one-way air inlet channel and an air outlet channel which are communicated with the compression cavity are further formed in the cylinder wall of the compression air cylinder, a pressure release valve is arranged in the air outlet channel, the pushing assembly is used for pushing the piston rod to reciprocate, the adjusting assembly comprises a first adjusting piece and a second adjusting piece, and the controller is used for controlling the piston rod to move after pressure release opening pressure of the pressure release valve is adjusted. And the position of the cylinder body relative to the piston rod is correspondingly adjusted according to the preset mapping relation between the pressure relief opening pressure and the position of the cylinder body. By using the device, the output gas pressure of the compression cylinder can be very conveniently adjusted.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a shock wave gas source generating device, a pressure regulating method thereof, and a shock wave treatment device. Background Art

[0002] An extracorporeal shock wave treatment device generally consists of a shock wave probe and a gas source. The gas source provides pulsed gas to the shock wave probe, so that the shock wave probe generates shock waves.

[0003] Most of the existing shock wave treatment devices rely on high-pressure gas cylinders to supply gas to the shock wave probe. Before using the high-pressure gas cylinder, a compressor needs to pump air into the high-pressure gas cylinder in advance. When assembling the shock wave treatment device, a reversing stop valve needs to be set between the gas cylinder and the probe. By controlling the reversing frequency of the reversing stop valve, the control of the shock wave frequency is realized.

[0004] When using a gas cylinder for gas supply, as the usage time of the gas cylinder increases, the pressure inside the cylinder will decrease, resulting in the inability to maintain the shock wave intensity consistent for a long time. Especially for shock wave treatment of vaginitis, if a low-intensity and multi-frequency treatment strategy is adopted, the treatment time for each treatment generally exceeds half an hour, and it is easy for the shock wave intensity to fluctuate during the treatment; at the same time, during the treatment, if it is found that the treatment effect of the shock wave with the current intensity is not ideal and the intensity of the shock wave needs to be increased, medical staff need to replace the gas cylinder with a higher pressure or use a compressor to increase the pressure inside the gas cylinder, which is not only troublesome to operate but also increases the waiting time of the patient. Summary of the Invention

[0005] Aiming at the above defects or deficiencies, the present invention provides a shock wave gas source generating device, a pressure regulating method thereof, and a shock wave treatment device, aiming to solve the technical problems that the existing shock wave treatment device is troublesome to operate for adjusting the intensity of the shock wave and it is difficult to accurately ensure the intensity of each shock wave.

[0006] To achieve the above object, the present invention provides a shock wave gas source generating device. The shock wave gas source generating device includes a compression cylinder, a pushing component, an adjusting component, and a controller. The compression cylinder includes a cylinder body and a piston rod. One of the chambers of the cylinder body is a compression chamber. A one-way intake passage and an air outlet passage communicating with the compression chamber are further provided on the cylinder wall of the compression cylinder. A pressure relief valve is provided in the air outlet passage. The pushing component is used to push the piston rod to reciprocate. The adjusting component includes a first adjusting member for adjusting the pressure relief opening pressure of the pressure relief valve and a second adjusting member for driving the cylinder body to displace relative to the piston rod. The controller is used to, after the pressure relief opening pressure of the pressure relief valve is adjusted, correspondingly adjust the position of the cylinder body relative to the piston rod according to a preset mapping relationship between the pressure relief opening pressure and the position of the cylinder body.

[0007] In an embodiment of the present invention, the controller is specifically configured to:

[0008] Confirm that the pressure relief opening pressure of the pressure relief valve is increased;

[0009] Generate a command to increase the compression ratio;

[0010] Control the second adjusting member to act according to the command to increase the compression ratio, so that the cylinder block moves towards the first end of the extension rod;

[0011] When the position of the cylinder block reaches the position corresponding to the preset mapping relationship, control the second adjusting member to stop driving;

[0012] Confirm that the pressure relief opening pressure of the pressure relief valve is decreased;

[0013] Generate a command to decrease the compression ratio;

[0014] Control the second adjusting member to act according to the command to decrease the compression ratio, so that the cylinder block moves towards the second end of the extension rod;

[0015] When the position of the cylinder block reaches the position corresponding to the preset mapping relationship, control the second adjusting member to stop driving.

[0016] In an embodiment of the present invention, before confirming that the pressure relief opening pressure of the pressure relief valve is increased or decreased, the controller is further configured to:

[0017] Control the first adjusting member to act according to the specific value of the treatment parameter input externally, so as to adjust the pressure relief opening pressure of the pressure relief valve to be consistent with the value in the treatment parameter.

[0018] In an embodiment of the present invention, an installation channel communicating with the air outlet channel is further provided on the cylinder wall of the cylinder block, the pressure relief valve is installed in the installation channel and the head end of the pressure relief valve extends into and blocks the air outlet channel, and a pre-tightening spring for providing a pre-tightening force to the head end of the pressure relief valve is further provided inside the pressure relief valve. The first adjusting member is a telescopic pushing member, and the telescopic rod end of the first adjusting member acts on the pre-tightening spring;

[0019] Wherein, the acting direction of the pre-tightening spring is opposite to the air outlet direction of the air outlet channel at the installation channel.

[0020] In an embodiment of the present invention, the extension length of the first adjusting member is positively correlated with the pressure relief opening pressure of the pressure relief valve. Controlling the first adjusting member to act according to the treatment parameter input externally specifically includes:

[0021] Controlling the extension length of the first adjusting member corresponding to the specific value of the treatment parameter input externally.

[0022] In an embodiment of the present invention, confirming that the pressure relief opening pressure of the pressure relief valve is increased or decreased specifically includes:

[0023] Confirm whether the extension length of the first adjusting member increases or decreases.

[0024] In an embodiment of the present invention, the pushing assembly includes a first cam and a second cam respectively disposed corresponding to the first end of the extending rod and the second end of the extending rod. The first cam and the second cam are used to alternately apply an axial thrust to the first end of the extending rod and the second end of the extending rod. The shock wave gas source generating device further includes a driving assembly for driving the first cam and the second cam to rotate synchronously.

[0025] To achieve the above object, the present invention also provides a pressure regulating method for a shock wave gas source generating device, wherein the pressure regulating method includes:

[0026] S100: Provide the shock wave gas source generating device as described above;

[0027] S200: According to the specific value of the treatment parameter input externally, control the first adjusting member to act so as to adjust the pressure relief opening pressure of the pressure relief valve to be consistent with the value in the treatment parameter;

[0028] S300: After the pressure relief opening pressure of the pressure relief valve is adjusted, according to the preset mapping relationship between the pressure relief opening pressure and the position of the cylinder block, correspondingly adjust the position of the cylinder block relative to the piston rod.

[0029] In an embodiment of the present invention, correspondingly adjusting the position of the cylinder block relative to the piston rod according to the preset mapping relationship between the pressure relief opening pressure and the position of the cylinder block specifically includes:

[0030] If the pressure relief opening pressure after the adjustment of the pressure relief valve is higher than the pressure relief opening pressure before the adjustment, control the cylinder block to move towards the first end of the extending rod until the position of the cylinder block reaches the position corresponding to the preset mapping relationship and then stop;

[0031] If the pressure relief opening pressure after the adjustment of the pressure relief valve is lower than the pressure relief opening pressure before the adjustment, control the cylinder block to move towards the second end of the extending rod until the position of the cylinder block reaches the position corresponding to the preset mapping relationship and then stop.

[0032] To achieve the above object, the present invention also provides a shock wave treatment device, wherein the shock wave treatment device includes the shock wave gas source generating device as described above.

[0033] By the above technical solution, the shock wave gas source generating device provided by the embodiment of the present invention has the following beneficial effects:

[0034] When the pushing component drives the piston rod to move towards the compression chamber, the plug body part of the piston rod compresses the gas in the compression chamber. When the piston rod moves to a certain position and the pressure of the gas in the compression chamber is greater than the opening pressure of the pressure relief valve, the pressure relief valve will open. At this time, the high-pressure gas in the compression chamber will provide high-pressure gas outward through the air outlet channel. When the compression cylinder completes the compression-exhaust process, the pushing component will push the piston rod to move reversely to reset, and at this time, the compression chamber is refilled with gas; through the action of the pushing component, the compression cylinder can stably and continuously generate pulsed gas. Due to the existence of the pressure relief valve, the pressure relief valve will only open when the gas pressure in the compression chamber reaches the set value, so as to ensure that the pressure of the pulsed gas output by the compression cylinder each time is the same; furthermore, when medical staff use it, they only need to adjust the pressure relief pre-tightening force of the pre-tightening spring in the pressure relief valve to adjust the pressure of the pulsed gas, which is very convenient to adjust.

[0035] Other features and advantages of the present invention will be described in detail in the following specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0037] Figure 1 is an overall exploded structural schematic diagram of a shock wave gas source generating device according to an embodiment of the present invention;

[0038] Figure 2 is a structural schematic diagram of the cooperation between a compression cylinder and a pushing component according to an embodiment of the present invention;

[0039] Figure 3 is a structural schematic diagram of a piston rod according to an embodiment of the present invention;

[0040] Figure 4 is a structural schematic diagram of the specific installation form of a pressure relief valve according to an embodiment of the present invention;

[0041] Figure 5 is a schematic diagram of the initial and final positions of the plug body part when the plug body part moves between 3-15 cm in the cylinder chamber according to an embodiment of the present invention;

[0042] Figure 6 is a connection schematic diagram of three compression cylinders connected in parallel according to an embodiment of the present invention;

[0043] Figure 7 is a connection schematic diagram of three compression cylinders connected in series according to an embodiment of the present invention;

[0044] Figure 8 is a control flow chart of a shock wave gas source generating device according to an embodiment of the present invention;

[0045] Figure 9 is the schematic connection diagram of the controller according to an embodiment of the present invention;

[0046] Figure 10 is the step diagram of the pressure regulation method according to an embodiment of the present invention.

[0047] Description of the reference numerals

[0048] 5. Compression cylinder; 5a. First end of the extending rod; 5b. Second end of the extending rod; 5c. Compression chamber; 5d. Air outlet channel; 5d1. Exhaust port; 5f. Unidirectional intake channel; 5f1. Intake port; 5f2. Intake chamber; 5f3. Unidirectional channel; 51. Cylinder block; 52. Piston rod; 521. Plug body part; 522. First clamping plate; 523. Second clamping plate; 53. First end cover; 54. Second end cover; 61. Pressure relief valve; 62. First adjusting member; 63. Sliding guide rod; 7. Thrust assembly; 71. First cam; 72. Second cam; 81. Motor; 82. First driving wheel; 83. Second driving wheel; 84. Synchronous transmission belt; 9. Box body. Detailed implementation manners

[0049] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0050] The shock wave gas source generating device of the present invention will be described below with reference to the accompanying drawings.

[0051] The present invention provides a shock wave gas source generating device for shock wave therapy, as Figure 1 and Figure 2 shown, the shock wave gas source generating device includes a compression cylinder 5 and a thrust assembly 7.

[0052] The compression cylinder 5 includes a cylinder block 51 and a piston rod 52. One of the chambers of the cylinder block 51 is a compression chamber 5c. A unidirectional intake channel 5f and an air outlet channel 5d communicating with the compression chamber 5c are further provided on the cylinder wall of the compression cylinder 5. A pressure relief valve 61 is provided in the air outlet channel 5d; the thrust assembly 7 is used to push the piston rod 52 to reciprocate.

[0053] When the pushing component 7 drives the piston rod 52 to move in the direction of the compression chamber 5c, the plug body portion 521 of the piston rod 52 compresses the gas in the compression chamber 5c. When the piston rod 52 moves to a certain position and the pressure of the gas in the compression chamber 5c is greater than the opening pressure of the pressure relief valve 61, the pressure relief valve 61 will open. At this time, the high-pressure gas in the compression chamber 5c will provide high-pressure gas outward through the air outlet channel 5d. When the compression cylinder 5 completes the compression-exhaust process, the pushing component 7 will push the piston rod 52 to move reversely to reset, and at this time, the compression chamber 5c is refilled with gas; through the action of the pushing component 7, the compression cylinder 5 can stably and continuously generate pulsed gas. Due to the existence of the pressure relief valve 61, the pressure relief valve 61 will only open when the gas pressure in the compression chamber 5c reaches the set value, so as to ensure that the pressure of the pulsed gas output by the compression cylinder 5 each time is the same; furthermore, when medical staff use it, they only need to adjust the pressure relief pre-tightening force of the pre-tightening spring in the pressure relief valve 61 to adjust the pressure of the pulsed gas, which is very convenient to adjust.

[0054] The intensity of the shock wave is related not only to the pressure of the gas output by the compression cylinder 5, but also to the output duration of the gas. For example, when high-pressure gas with a duration of 0.01 s and high-pressure gas with a duration of 0.05 s act on the shock wave probe respectively, the intensity of the shock wave generated by the probe will surely be different.

[0055] In order to further achieve precise control of the intensity of the shock wave, as Figure 8 and Figure 9 shown, in the embodiment of the present invention, the shock wave gas source generating device further includes an adjusting component and a controller. The adjusting component includes a first adjusting member 62 for adjusting the pressure relief opening pressure of the pressure relief valve 61 and a second adjusting member (not shown in the figure) for driving the cylinder block 51 to displace relative to the piston rod 52; the controller is used to, after the pressure relief opening pressure of the pressure relief valve 61 is adjusted, adjust the position of the cylinder block 51 relative to the piston rod 52 according to the preset mapping relationship between the pressure relief opening pressure and the position of the cylinder block 51, so as to adjust the compression ratio of the compression cylinder 5, thereby adjusting the output duration of the high-pressure gas output by the compression cylinder 5 each time.

[0056] Taking a specific case as an example. As Figure 2 and Figure 5As shown, in this case, the length of the cylinder chamber of the compression cylinder 5 is 20 cm. Assuming that each 1 cm length of the cylinder chamber represents a unit of volume, under the action of the pushing component 7 each time, the movement stroke of the piston rod 52 is 12 cm. By adjusting the position of the cylinder block 51 relative to the piston rod 52, the plug body 521 can move between the 1 - 13 cm, 2 - 14 cm, 3 - 15 cm, 4 - 16 cm, 5 - 17 cm, 6 - 18 cm, and 7 - 19 cm of the cylinder chamber. Due to the different initial and final movement positions of the plug body 521, the compression ratio of the compression cylinder 5 will also be different. Based on this, the following comparison table can be generated for the compression ratio of the compression cylinder 5 and the initial and final positions of the plug body 521:

[0057]

[0058] According to the input treatment parameters, assuming that the opening pressure of the pressure relief valve 61 is adjusted to 5 bar. Before the position of the cylinder block 51 relative to the piston rod 52 is adjusted, the plug body 521 moves between 5.5 - 17.5 cm of the cylinder chamber. When the plug body 521 is at 5.5 cm, the pressure in the compression chamber 5c is the atmospheric pressure (1 bar). If the device operates according to this parameter, then when the piston rod 52 moves to 17.1 cm (1 bar * (20 - 5.5) / (20 - 17.1) = 5 bar), the pressure in the compression chamber 5c will theoretically reach 5 bar. When the piston rod 52 moves between 17.1 - 17.5 cm, the pressure relief valve 61 will be in the open state and continuously output high-pressure gas. At this time, the duration for the compression cylinder 5 to output high-pressure gas is only the duration it takes for the piston rod 52 to move 0.4 cm. If the treatment is carried out at a shock wave frequency of 10 Hz, then the duration for the pressure relief valve 61 to output high-pressure gas is only 0.0016 s. The high-pressure gas output during this duration is very likely to result in an insufficient flow rate of the output high-pressure gas.

[0059] In the preset mapping relationship, if the opening pressure of 5 bar corresponds to the movement of the plug body 521 between 6 - 18 cm of the cylinder chamber, then after adjusting the position of the cylinder block 51 relative to the piston rod 52 according to the preset mapping relationship, when the piston rod moves to 17.2, the pressure in the compression chamber 5c will reach 5 bar. When the piston rod 52 moves between 17.2 - 18 cm, the pressure relief valve 61 continuously opens and outputs high-pressure gas, and the exhaust time of the compression cylinder 5 increases by two times. Obviously, by adopting the control strategy in this controller, when adjusting the opening pressure of the pressure relief valve 61, it can adaptively adjust the opening duration of the pressure relief valve 61, thereby achieving precise control of the shock wave intensity.

[0060] It can be understood that during actual parameter setting, the preset mapping relationship can be specifically adjusted according to parameters such as the size of the compression cylinder 5 and the stroke of the pushing component 7.

[0061] In an embodiment of the present invention, when the pressure relief opening pressure of the pressure relief valve 61 is increased, the specific control process of the controller is as follows:

[0062] Confirm that the pressure relief opening pressure of the pressure relief valve 61 is increased;

[0063] Generate a command to increase the compression ratio;

[0064] Control the second adjusting member to act according to the command to increase the compression ratio, so that the cylinder block 51 moves towards the first extended rod end 5a;

[0065] When the position of the cylinder block 51 reaches the position corresponding to the preset mapping relationship, control the second adjusting member to stop driving.

[0066] In an embodiment of the present invention, when the pressure relief opening pressure of the pressure relief valve 61 is decreased, the specific control process of the controller is as follows:

[0067] Confirm that the pressure relief opening pressure of the pressure relief valve 61 is decreased;

[0068] Generate a command to decrease the compression ratio;

[0069] Control the second adjusting member to act according to the command to decrease the compression ratio, so that the cylinder block 51 moves towards the second extended rod end 5b;

[0070] When the position of the cylinder block 51 reaches the position corresponding to the preset mapping relationship, control the second adjusting member to stop driving.

[0071] In an embodiment of the present invention, before confirming that the pressure relief opening pressure of the pressure relief valve 61 is increased or decreased, the controller is further configured to:

[0072] Control the first adjusting member 62 to act according to the specific value of the treatment parameter input externally, so as to adjust the pressure relief opening pressure of the pressure relief valve 61 to be consistent with the value in the treatment parameter.

[0073] As Figure 8 shown, the entire operation process of the device is as follows: Medical staff manually input treatment parameters or select a treatment mode on the display and control terminal of the device. After receiving the corresponding parameter values, the controller will control the first adjusting member 62 to act, so as to adjust the opening pressure of the pressure relief valve 61 to be consistent with the specific value corresponding to the treatment parameter. When the controller confirms that the adjustment of the first adjusting member 62 is completed, it will automatically generate a command to increase the compression ratio or a command to decrease the compression ratio, thereby correspondingly controlling the second adjusting member to act. Through the above control, when adjusting the opening pressure of the pressure relief valve 61, the opening duration of the pressure relief valve 61 can be adaptively adjusted, so as to achieve precise control of the shock wave intensity.

[0074] As Figure 2 and Figure 4As shown, in an embodiment of the present invention, for the convenience of installing the pressure relief valve 61, an installation passage communicating with the air outlet passage 5d may be provided on the cylinder wall of the cylinder block 51. The pressure relief valve 61 is installed in the installation passage and the head end of the pressure relief valve 61 extends into and blocks the air outlet passage 5d, and the head end of the pressure relief valve 61 is tapered. A pre-tightening spring for providing a pre-tightening force to the head end of the pressure relief valve 61 is further provided inside the pressure relief valve 61. The first adjusting member 62 is a telescopic pushing member, and the telescopic pushing member can be an electric cylinder, a cylinder, a motor 81 screw rod, etc. The telescopic rod end of the first adjusting member 62 acts on the pre-tightening spring; wherein, the acting direction of the pre-tightening spring is opposite to the air outlet direction of the air outlet passage 5d at the installation passage. When the pressure of the gas in the compression chamber 5c is greater than the pre-tightening force of the pre-tightening spring, the gas will overcome the pre-tightening force of the pre-tightening spring and push open the head end of the pressure relief valve 61. At this time, the air outlet passage 5d discharges gas outward; when the pressure of the gas in the compression chamber 5c is less than the pre-tightening force of the pre-tightening spring, the pre-tightening spring will keep the head end of the pressure relief valve 61 in the state of blocking the air outlet passage 5d. At this time, the air outlet passage 5d is in a cut-off state.

[0075] In an embodiment of the present invention, the extended length of the first adjusting member 62 is positively correlated with the pressure relief opening pressure of the pressure relief valve 61. Controlling the action of the first adjusting member 62 according to the externally input treatment parameters specifically includes:

[0076] Controlling the extended length of the first adjusting member 62 corresponding to the specific value of the externally input treatment parameters.

[0077] That is, the controller only needs to monitor the elongation of the first adjusting member 62, and then can calculate the pressure relief opening pressure of the pressure relief valve 61, greatly simplifying the control.

[0078] Further, in an embodiment of the present invention, confirming that the pressure relief opening pressure of the pressure relief valve 61 is increased or decreased specifically includes:

[0079] Confirming that the extended length of the first adjusting member 62 increases or decreases.

[0080] That is, the controller only needs to monitor the positive or negative of the extended change amount of the first adjusting member 62, and then can judge whether the pressure relief opening pressure of the pressure relief valve 61 is increased or decreased.

[0081] Such as Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the compression cylinder can be a double-headed cylinder. The pushing assembly 7 may include a first cam 71 and a second cam 72 respectively corresponding to the first extended rod end 5a and the second extended rod end 5b. The first cam 71 and the second cam 72 are used to alternately apply an axial thrust to the first extended rod end 5a and the second extended rod end 5b. The shock wave gas source generating device further includes a driving assembly for driving the first cam 71 and the second cam 72 to rotate synchronously.

[0082] The driving component drives the second cam 72 to rotate. The second cam 72 applies a pushing force to the second extended rod end 5b of the piston rod 52, causing the piston rod 52 to move in the extending direction of the first extended rod end 5a. The movement of the piston rod 52 compresses the gas in the compression chamber 5c. When the piston rod 52 moves to a certain position and the pressure of the gas in the compression chamber 5c is greater than the opening pressure of the pressure relief valve 61, the pressure relief valve 61 will open. At this time, the high-pressure gas in the compression chamber 5c will provide high-pressure gas outward through the air outlet channel 5d. After the second cam 72 finishes pushing, the first cam 71 will apply a pushing force to the first extended rod end 5a of the piston rod 52, causing the piston rod 52 to move and reset in the extending direction of the second extended rod end 5b. At this time, the compression chamber 5c is refilled with gas. Through the alternating cooperation of the first cam 71 and the second cam 72, it can be ensured that the compression cylinder 5 can stably and continuously generate pulsed gas. Due to the existence of the pressure relief valve 61, it can be ensured that the pressure of the pulsed gas output by the compression cylinder 5 each time is the same, so as to ensure that the energy intensity of the shock wave generated each time is the same. Moreover, when medical staff use it, they only need to adjust the pressure relief pre-tightening force of the pre-tightening spring in the pressure relief valve 61 to adjust the pressure of the pulsed gas, which is very convenient to adjust.

[0083] As Figure 1 and Figure 2 shown, in the embodiment of the present invention, the compression cylinder 5 includes a cylinder block 51 and a piston rod 52. The piston rod 52 is arranged in the cylinder block 51, and the two ends of the piston rod 52 are respectively the first extended rod end 5a and the second extended rod end 5b. The first extended rod end 5a and the second extended rod end 5b respectively extend from both ends of the cylinder block 51. The plug body part 521 of the piston rod 52 divides the inner cavity of the cylinder block 51 into an air inlet chamber 5f2 and a compression chamber 5c. An air inlet 5f1 and an exhaust port 5d1 communicating the air inlet chamber 5f2 and the compression chamber 5c are respectively provided on the cylinder wall of the cylinder block 51. A one-way channel 5f3 that communicates unidirectionally from the air inlet chamber 5f2 to the compression chamber 5c is also provided on the piston rod 52. The one-way channel 5f3 is set to be conductive when the gas flows from the air inlet chamber 5f2 to the compression chamber 5c and cut off in the reverse direction; among them, the one-way air inlet channel 5f at least consists of the air inlet 5f1, the air inlet chamber 5f2 and the one-way channel 5f3, and the air outlet channel 5d includes the exhaust port 5d1.

[0084] When the piston rod 52 moves in the extending direction of the first extended rod end 5a, the piston rod 52 compresses the gas in the compression chamber 5c, and at the same time, the air inlet chamber 5f2 will intake air through the air inlet 5f1. When the piston rod 52 moves to a certain position in the extending direction of the second extended rod end 5b, the pressure in the compression chamber 5c is less than the pressure in the air inlet chamber 5f2. At this time, the gas in the air inlet chamber 5f2 can enter the compression chamber 5c through the air inlet 5f1, the air inlet chamber 5f2 and the one-way channel 5f3, so as to realize the refilling of the compression chamber 5c.

[0085] Of course, the compression cylinder in the present device can also be a single-head cylinder.

[0086] like Figure 2 and Figure 3 As shown, in the embodiment of the present invention, the one-way channel 5f3 can be a tapered channel provided on the plug body 521, and the tapered channel is close to one end of the air inlet cavity 5f2 ( Figure 2 The left end in the figure) is a small opening with a small cross-sectional area, and the conical passage is close to one end of the compression chamber 5c ( Figure 2 The right end of the plug 521 is a large opening with a large cross-sectional area. A ball and a spring can be installed in the tapered channel. The first clamp 522 and the second clamp 523 can be installed on both sides of the plug body 521. The first clamp 522 is located on the side of the plug body 521 close to the compression chamber 5c. The first clamp 522 and the second clamp 523 are used to keep the ball in the tapered channel. The spring is arranged between the ball and the first clamp 522 and is used to prevent the ball from being completely attached to the first clamp 522, causing the air holes on the first clamp 522 to be blocked. When the pressure in the compression chamber 5c is greater than the pressure in the air inlet chamber 5f2, the ball will move toward the small end of the tapered channel to cut off the tapered channel. When the pressure in the compression chamber 5c is less than the pressure in the air inlet chamber 5f2, the ball will move toward the large opening of the tapered channel, and the tapered channel is conductive at this time.

[0087] like Figure 1 and Figure 2 As shown, in the embodiment of the present invention, the compression cylinder 5 may include a first end cover 53 and a second end cover 54 in addition to the cylinder body 51. The first end cover 53 and the second end cover 54 are respectively used to block the two ends of the cylinder body 51, and the first extension rod end 5a and the second extension rod end 5b are respectively correspondingly passed through the first end cover 53 and the second end cover 54. The first end cover 53 and the second end cover 54 facilitate not only the sealing of the ports at the two ends of the cylinder body 51, but also the installation of the piston rod 52.

[0088] like Figure 1 and Figure 2 As shown, in the embodiment of the present invention, the first end cover 53 and the second end cover 54 are preferably detachably mounted on both ends of the cylinder body 51, the air inlet 5f1 can be arranged on the second end cover 54, and the air outlet 5d1 and the air outlet passage can be arranged on the first end cover 53. By detachably arranging the first end cover 53 and the second end cover 54, the processing of the air inlet 5f1 and the air outlet 5d1 and the assembly of the compression cylinder 5 are facilitated.

[0089] In order to alternately apply axial thrust to the first and second extended rod ends 5a and 5b, as shown in FIG. Figure 2 As shown, in the embodiment of the present invention, the phase angles of the first cam 71 and the second cam 72 may differ by 90°. Of course, in some cases, two cams with other angle differences may also be able to achieve the above-mentioned alternating function.

[0090] As Figure 1 shown, in an embodiment of the present invention, the drive assembly includes a motor 81, a first drive wheel 82, a second drive wheel 83, and a synchronous transmission belt 84. The connecting shaft of the first cam 71 is in transmission connection with the first drive wheel 82, the connecting shaft of the second cam 72 is in transmission connection with the second drive wheel 83, the synchronous transmission belt 84 is sleeved on the first drive wheel 82 and the second drive wheel 83, and the motor 81 is used to drive one of the first drive wheel 82, the second drive wheel 83, and the synchronous transmission belt 84 to move. The transmission form of the synchronous transmission belt 84 is preferably meshing transmission. Through the synchronous transmission belt 84, the synchronous rotation of the first cam 71 and the second cam 72 can be achieved.

[0091] In an embodiment of the present invention, the first drive wheel 82 and the second drive wheel 83 can also be driven by two motors 81 respectively. In order to ensure the synchronism of the first cam 71 and the second cam 72, higher requirements are needed for the control of the motor 81.

[0092] As Figure 1 shown, in an embodiment of the present invention, the number of the compression cylinders 5, the first cam 71, and the second cam 72 are respectively multiple, and the compression cylinders 5, the first cam 71, and the second cam 72 are respectively arranged in one-to-one correspondence. The multiple compression cylinders 5 can be both connected in parallel and connected in series. As Figure 6 and Figure 7 shown, taking three compression cylinders 5 as an example, the three compression cylinders 5 can be respectively defined as the first cylinder, the second cylinder, and the third cylinder. When connected in parallel, the exhaust ports 5d1 of the first cylinder, the second cylinder, and the third cylinder are merged into one pipeline through a pipeline to achieve the large-flow output of the compressed gas of the shock wave gas source generating device. When connected in series, the exhaust port 5d1 of the first cylinder and the exhaust port 5d1 of the second cylinder can be commonly connected to the intake port 5f1 of the third cylinder to achieve the output of the compressed gas with higher pressure of the shock wave gas source generating device. Among them, when connected in series, a check valve needs to be installed at the intake port 5f1 of the third cylinder, or the pressure relief valve 61 is set as a one-way pressure relief valve 61.

[0093] As Figure 1 shown, in an embodiment of the present invention, the shock wave gas source generating device further includes a box body 9. The box body 9 is provided with an intake and exhaust fence and an air outlet interface. The compression cylinder 5, the pushing assembly 7, and the drive assembly are arranged in the box body 9.

[0094] As Figure 1As shown, for the convenience of the movement of the cylinder block 51, in the embodiment of the present invention, the compression cylinder 5 may further include a sliding guide rod 63. The sliding guide rod 63 is arranged along the extension direction of the piston rod 52. The cylinder block 51 of the compression cylinder 5, and / or the first end cover 53, and / or the second end cover 54 may be slidably engaged with the sliding guide rod 63. The second adjusting member may be an electric cylinder, a lead screw, etc. acting on the cylinder block 51, and / or the first end cover 53, and / or the second end cover 54. By monitoring the extended length of the second adjusting member, the controller can convert it into the relative position between the cylinder block and the piston rod.

[0095] As Figure 10 shown, to achieve the above object, the present invention also provides a pressure adjustment method for a shock wave gas source generating device, wherein the pressure adjustment method includes:

[0096] S100: Provide the shock wave gas source generating device as described above;

[0097] S200: According to the specific value of the treatment parameter input externally, control the first adjusting member 62 to act to adjust the pressure relief opening pressure of the pressure relief valve 61 to be consistent with the value in the treatment parameter;

[0098] S300: After the pressure relief opening pressure of the pressure relief valve 61 is adjusted, according to the preset mapping relationship between the pressure relief opening pressure and the position of the cylinder block 51, correspondingly adjust the position of the cylinder block 51 relative to the piston rod 52.

[0099] This method can adaptively adjust the opening duration of the pressure relief valve 61 when the opening pressure of the pressure relief valve 61 is adjusted, so as to ensure the pressure and duration of the gas output by the compression cylinder 5, and further achieve precise control of the shock wave intensity.

[0100] In the embodiment of the present invention, correspondingly adjusting the position of the cylinder block 51 relative to the piston rod 52 according to the preset mapping relationship between the pressure relief opening pressure and the position of the cylinder block 51 specifically includes:

[0101] If the pressure relief opening pressure after the adjustment of the pressure relief valve 61 is higher than the pressure relief opening pressure before the adjustment, control the cylinder block 51 to move towards the first extended rod end 5a until the position of the cylinder block 51 reaches the position corresponding to the preset mapping relationship and then stop;

[0102] If the pressure relief opening pressure after the adjustment of the pressure relief valve 61 is lower than the pressure relief opening pressure before the adjustment, control the cylinder block 51 to move towards the second extended rod end 5b until the position of the cylinder block 51 reaches the position corresponding to the preset mapping relationship and then stop.

[0103] To achieve the above object, the present invention further provides a shock wave treatment device, wherein the shock wave treatment device includes a pneumatic shock wave generator and the shock wave gas source generating device described above. The pulse gas is provided to the shock wave generator by the shock wave gas source generating device, so that the shock wave generator generates shock waves. Since the shock wave generator adopts all the technical solutions of the above embodiments, it has at least the beneficial effects brought by the above embodiments, and will not be repeated here.

[0104] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0105] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. 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 circumstances.

[0106] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0107] Although the embodiments of the present invention have been described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A shock wave gas source generating device for shock wave therapy, characterized in that: The shock wave gas source generating device comprises: A compression cylinder (5) comprises a cylinder body (51) and a piston rod (52); one of the chambers of the cylinder body (51) is a compression chamber (5c); a one-way air inlet channel (5f) and an air outlet channel (5d) communicating with the compression chamber (5c) are also provided on the cylinder wall of the compression cylinder (5); a pressure relief valve (61) is provided in the air outlet channel (5d); A push assembly (7) for pushing the piston rod (52) to reciprocate; An adjusting component, comprising a first adjusting member (62) for adjusting the pressure relief opening pressure of the pressure relief valve (61) and a second adjusting member for driving the cylinder body (51) to move relative to the piston rod (52); The controller is used to adjust the position of the cylinder body (51) relative to the piston rod (52) according to a preset mapping relationship between the pressure relief opening pressure and the position of the cylinder body (51) after the pressure relief opening pressure of the pressure relief valve (61) is adjusted.

2. The shock wave gas source generating device according to claim 1, characterized in that: The controller is specifically configured as follows: Confirming that the pressure relief opening pressure of the pressure relief valve (61) is increased; Generate a command to increase the compression ratio; controlling the second adjusting member to move according to the compression ratio increasing instruction, so as to move the cylinder body (51) toward the compression direction of the compression chamber (5c); When the position of the cylinder (51) reaches the position corresponding to the preset mapping relationship, controlling the second adjusting member to stop driving; Confirming that the pressure relief opening pressure of the pressure relief valve (61) is adjusted to a lower level; Generate a compression ratio reduction instruction; controlling the second adjusting member to move according to the compression ratio reduction instruction so as to move the cylinder body (51) in a direction opposite to the compression direction of the compression chamber (5c); When the position of the cylinder (51) reaches the position corresponding to the preset mapping relationship, the second adjusting member is controlled to stop driving.

3. The shock wave gas source generating device according to claim 2, characterized in that: Before confirming that the pressure relief opening pressure of the pressure relief valve (61) is adjusted up or down, the controller is further configured to: According to the specific value of the treatment parameter input from the outside, the first adjustment member (62) is controlled to operate so as to adjust the pressure relief opening pressure of the pressure relief valve (61) to be consistent with the value of the treatment parameter.

4. The shock wave gas source generating device according to claim 3, characterized in that: The cylinder wall of the cylinder body (51) is also provided with an installation channel connected to the air outlet channel (5d); the pressure relief valve (61) is installed in the installation channel and the head end of the pressure relief valve (61) extends into and blocks the air outlet channel (5d); a preload spring for providing a preload force to the head end of the pressure relief valve (61) is also provided inside the pressure relief valve (61); the first adjusting member (62) is a telescopic push member, and the telescopic rod end of the first adjusting member (62) acts on the preload spring; The action direction of the preload spring is opposite to the air outlet direction of the air outlet channel (5d) at the installation channel.

5. The shock wave gas source generating device according to claim 4, characterized in that: The extension length of the first adjusting member (62) is positively correlated with the pressure relief opening pressure of the pressure relief valve (61), and controlling the action of the first adjusting member (62) according to the externally input treatment parameter specifically includes: The extension length of the first adjusting member (62) is controlled in response to the specific value of the externally input treatment parameter.

6. The shock wave gas source generating device according to claim 4, characterized in that: Confirming that the pressure relief opening pressure of the pressure relief valve (61) is adjusted up or down specifically includes: Confirm that the extended length of the first adjusting member (62) increases or decreases.

7. The shock wave gas source generating device according to any one of claims 1 to 6, characterized in that: The piston rod (52) is inserted into the cylinder body (51) and the two ends of the piston rod (52) are respectively a first extending rod end (5a) and a second extending rod end (5b); the first extending rod end (5a) and the second extending rod end (5b) extend from the two ends of the cylinder body (51) respectively; the compression chamber (5c) is arranged corresponding to the first extending rod end (5a); the push assembly (7) comprises a first cam (71) and a second cam (72) respectively arranged corresponding to the first extending rod end (5a) and the second extending rod end (5b); the first cam (71) and the second cam (72) are used to alternately apply axial thrust to the first extending rod end (5a) and the second extending rod end (5b); the shock wave gas source generating device also comprises a driving assembly for driving the first cam (71) and the second cam (72) to rotate synchronously.

8. A method for regulating the pressure of a shock wave gas source generating device, characterized in that: The pressure regulation method comprises: Providing a shock wave gas source generating device according to any one of claims 1 to 7; According to a specific value of a treatment parameter input from the outside, the first adjusting member (62) is controlled to operate so as to adjust the pressure relief opening pressure of the pressure relief valve (61) to be consistent with the value of the treatment parameter; After the pressure relief opening pressure of the pressure relief valve (61) is adjusted, the position of the cylinder (51) relative to the piston rod (52) is correspondingly adjusted according to a preset mapping relationship between the pressure relief opening pressure and the position of the cylinder (51).

9. The pressure regulating method of the shock wave gas source generating device according to claim 8, characterized in that: According to the preset mapping relationship between the pressure relief opening pressure and the position of the cylinder body (51), correspondingly adjusting the position of the cylinder body (51) relative to the piston rod (52) specifically includes: If the pressure relief opening pressure after adjustment of the pressure relief valve (61) is higher than the pressure relief opening pressure before adjustment, the cylinder body (51) is controlled to move in the direction of compression of the compression chamber (5c) until the position of the cylinder body (51) reaches the position corresponding to the preset mapping relationship and stops; If the pressure relief opening pressure of the pressure relief valve (61) after adjustment is lower than the pressure relief opening pressure before adjustment, the cylinder body (51) is controlled to move in a direction opposite to the compression of the compression chamber (5c) until the position of the cylinder body (51) reaches the position corresponding to the preset mapping relationship and stops.

10. A shock wave therapy device, characterized in that: It comprises a shock wave gas source generating device according to any one of claims 1 to 7.

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