CN110623728A - Automatic pressure regulating type stone crushing and removing system - Google Patents
Automatic pressure regulating type stone crushing and removing system Download PDFInfo
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- CN110623728A CN110623728A CN201911030338.0A CN201911030338A CN110623728A CN 110623728 A CN110623728 A CN 110623728A CN 201911030338 A CN201911030338 A CN 201911030338A CN 110623728 A CN110623728 A CN 110623728A
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- removing system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
- A61B18/26—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor for producing a shock wave, e.g. laser lithotripsy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00505—Urinary tract
- A61B2018/00511—Kidney
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00982—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
- A61B2218/007—Aspiration
Abstract
The invention relates to a medical instrument, and particularly discloses an automatic pressure regulating type stone crushing and removing system. The stone crushing and removing system comprises an electronic mirror and a mirror sheath, wherein the mirror sheath comprises a sheath body and a sheath tube, a liquid drainage channel is arranged in the sheath tube, and a transition cavity communicated with the liquid drainage channel is arranged in the sheath body; the sheath body is provided with a liquid outlet and a pressure regulating port which are communicated with the transition cavity; still include the renal pressure monitoring module, the renal pressure monitoring module include the pressure-measuring pipe and with the hydraulic pressure detection device of pressure-measuring pipe intercommunication, hydraulic pressure detection device and pressure-measuring pipe between be equipped with the governing valve, the governing valve on be equipped with the liquid feeding passageway, the pressure-measuring pipe through governing valve and hydraulic pressure detection device and liquid feeding passageway alternative intercommunication. The stone crushing and removing system automatically balances the intra-renal pressure through the pressure regulating port, reduces intra-renal pressure fluctuation, improves the safety of the operation and simplifies the operation procedure.
Description
Technical Field
The invention relates to a medical instrument, in particular to an automatic pressure regulating type stone crushing and removing system.
Background
Endoluminal treatment is the main form of renal stone treatment at present, and the specific mode of operation is to enter the kidney from the urethra or body opening with an endoscope and to crush the renal stones with laser. The form of the intracavity therapy is generally popularized and used due to the advantages of minimal invasion or no invasion, small harm to the body and the like.
In the operation process, in order to ensure that the endoscope has a good operation visual field in the kidney and facilitate doctors to observe the conditions and operation effects in the kidney, a liquid inlet channel is usually constructed along with the endoscope, so that the liquid inlet channel is used for introducing physiological saline, supporting the space in the kidney and constructing a waste liquid discharge channel at the same time, so that gravels generated in the operation are discharged in time and the pressure in the kidney is balanced.
When the existing stone crushing and removing system for intracavity treatment works, the pressure in the kidney depends on the difference value of the liquid inlet flow rate and the liquid discharge flow rate, namely the liquid filling amount in the kidney. Different flow rates are required to be matched in different operation stages in the whole operation process, for example, in the process of intensively crushing stones, the operation visual field is influenced because the crushed stones are dispersed in liquid, and at the moment, the flow is required to be increased and the crushed stones are taken away in time. When the flow rate of the liquid inlet or the flow rate of the liquid outlet is changed, the pressure in the kidney is changed, and when the pressure in the kidney fluctuates beyond a certain range, the human body can be injured. In the existing system for removing the calculus at any time, doctors need to artificially adjust the liquid inlet flow or the liquid discharge flow when finding that the pressure changes, so that the intrarenal pressure is indirectly adjusted, the response speed is low, and the operation is complicated.
Disclosure of Invention
The invention aims to provide an automatic pressure regulating type stone crushing and removing system, which can automatically balance the intra-renal pressure through a pressure regulating port, reduce intra-renal pressure fluctuation, improve the safety of an operation and simplify the operation procedure of the operation.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: an automatic pressure-regulating type stone crushing and removing system comprises an electronic mirror and a mirror sheath, wherein the electronic mirror comprises a liquid inlet channel; the endoscope sheath comprises a sheath body and a sheath tube, wherein a liquid drainage channel is arranged in the sheath tube, and a transition cavity communicated with the liquid drainage channel is arranged in the sheath body; the sheath body is provided with a liquid outlet and a pressure regulating port which are communicated with the transition cavity; the device also comprises a perfusion device communicated with the liquid inlet channel and a suction device communicated with the liquid outlet; still include the renal pressure monitoring module, the renal pressure monitoring module include the pressure-measuring pipe and with the hydraulic pressure detection device of pressure-measuring pipe intercommunication, hydraulic pressure detection device and pressure-measuring pipe between be equipped with the governing valve, the governing valve on be equipped with the liquid feeding passageway, the pressure-measuring pipe through governing valve and hydraulic pressure detection device and liquid feeding passageway alternative intercommunication.
The pressure regulating port is directly communicated with the atmospheric environment, when the stone breaking and removing system normally works, part of air enters the transition cavity from the pressure regulating port, but the waste liquid entering the transition cavity from the kidney through the liquid discharge channel is preferentially discharged from the liquid discharge port due to the liquid discharge port communicated with the suction device, and meanwhile, part of air enters the liquid discharge port along with the waste liquid under the negative pressure action of the suction device.
When the liquid inlet flow is adjusted and increased, the intrarenal pressure is increased, the pressure difference between the inside of the kidney and the transition cavity is increased due to the fact that the atmospheric pressure is basically constant, the speed of waste liquid in the kidney entering the transition cavity is increased accordingly, on the premise that the suction pressure or the suction flow of the suction device is not changed, the air quantity entering the liquid discharge port is reduced, the discharge flow rate of the waste liquid is increased until the liquid inlet flow and the discharge flow are balanced. When the liquid inlet flow is adjusted and reduced, the intrarenal pressure is reduced, the amount of waste liquid entering the liquid outlet is reduced, the air amount is increased, and finally, the balance of liquid inlet and liquid discharge is achieved.
When the suction pressure is reduced by adjusting, the liquid discharge flow is increased, the amount of waste liquid in the transition cavity is reduced, the flow rate of the waste liquid entering the liquid discharge channel is increased, and the flow entering the kidney and the transition cavity is increased along with the increase of the flow until the balance of the liquid inlet flow and the liquid discharge flow is achieved. When the suction pressure is increased by adjusting, the liquid discharge flow is reduced, the flow rate of the waste liquid entering the liquid discharge channel is reduced, and the flow entering the kidney and the transition cavity is reduced along with the reduction of the flow rate until the liquid inlet flow and the liquid discharge flow are balanced.
The liquid discharge flow is indirectly adjusted by changing the air quantity entering the liquid discharge port from the pressure adjusting port, and the intrarenal pressure is balanced. In the whole process, although the intra-renal pressure still has certain fluctuation, the fluctuation is comparatively mild, the amplitude is greatly reduced, the internal pressure burden of the human kidney in the operation process is reduced to the maximum extent, the operation risk is reduced, in addition, only the liquid inlet flow or the liquid discharge flow needs to be regulated in the operation process, the balance between the liquid inlet flow and the liquid discharge flow can be automatically achieved, and the operation procedure is simplified.
The hydraulic detection device transmits pressure by liquid, so that real-time monitoring of the pressure is realized, the monitoring accuracy is high, and the response is timely. The hydraulic monitoring device needs to inject liquid for transmitting pressure into the pressure measuring tube before working, the existing stone crushing and removing system needs to separate the pressure measuring tube from the hydraulic detection device to carry out liquid filling operation, and the existing stone crushing and removing system is reassembled with the hydraulic detection device to carry out subsequent operation after liquid filling is finished. In this application, can control pressure-measuring pipe and hydraulic pressure detection device and liquid feeding passageway alternative intercommunication through the governing valve, need not during the topping up to pull down the pressure-measuring pipe, directly can accomplish the conversion between hydraulic pressure detection device also liquid feeding passageway through the governing valve, operate more simply high-efficient.
Preferably, the sheath body is made of transparent materials, the sheath body is provided with a mark line, the electronic endoscope can enter the kidney through the liquid discharge channel to be operated at any time, waste liquid is discharged from a gap between the electronic endoscope and the waste liquid channel in the stone breaking process, and the electronic endoscope is often drawn out into the transition cavity in order to improve the waste liquid discharge efficiency in the stone removing process. The sheath body of transparent material can be convenient for the doctor to observe the condition of taking out of electron mirror, and the setting of sign line can play the effect of the volume of taking out of instruction.
Preferably, the sheath body include main part and apron, the apron be located the main part and keep away from the one end of sheath pipe, main part and apron enclose jointly and become the transition chamber, the pressure regulating mouth set up on the apron. The cover plate and the main body are manufactured in a split mode, and modular production of all parts is facilitated.
Preferably, a pressure measuring channel is further arranged in the sheath tube, and the pressure measuring channel is communicated with the pressure measuring tube. The pressure measuring channel is directly integrated in the sheath tube and enters the human body along with the sheath tube, so that the pressure measurement of another channel is avoided, and the operation flow is simplified.
Preferably, the sheath tube comprises an inner tube body and an outer tube body, the liquid drainage channel is arranged in the inner tube body, and a gap between the inner tube body and the outer tube body forms a pressure measurement channel.
Preferably, the sheath body is provided with a collecting pipe, and the liquid outlet and the pressure regulating port are communicated with the transition cavity through the collecting pipe.
Preferably, the pressure regulating port is communicated with the liquid collecting device arranged in the opening, and when the transition cavity is filled with waste liquid and cannot be discharged in time or the liquid outlet is blocked, part of the waste liquid can enter the liquid collecting device through the pressure regulating port to be collected temporarily.
Preferably, the pressure regulating port is provided with a switch for controlling the opening amount of the pressure regulating port.
When the opening of increase pressure regulating mouth, the resistance that the air got into the transition chamber reduces, and under the unchangeable prerequisite of suction pressure and intrarenal pressure, the air volume of transition intracavity increases, and the air volume that gets into the leakage fluid dram increases, and the waste liquid volume reduces, and then the liquid charging volume increase in the kidney, and the intrarenal pressure increases, and under the same prerequisite of feed liquor pressure, the feed liquor volume also can reduce thereupon, and is balanced until feed liquor volume and leakage fluid.
When reducing the opening of pressure regulating mouth, the resistance increase of air admission transition chamber, under the unchangeable prerequisite of suction pressure and intrarenal pressure, the air volume of transition intracavity reduces, and the air volume that gets into the leakage fluid dram reduces, and the waste liquid volume increases, and then the liquid charging volume in the kidney reduces, and intrarenal pressure reduces, and under the same prerequisite of feed liquor pressure, the feed liquor volume also can increase thereupon, and is balanced until feed liquor volume and leakage fluid.
The flow can be changed by adjusting the opening amount of the switch, and the operation procedure is further simplified. In addition, under the action of the pressure regulating port, although the pressure in the kidney has a changing process, the change amount is small.
Preferably, the sheath body is further provided with an operation channel, and the electron mirror passes through the operation channel; the clearance between electron mirror and the operation passageway constitutes the pressure regulating mouth, simplifies the structure of sheath pipe.
Preferably, the sheath body is further provided with an operation channel, and the electronic mirror penetrates through the operation channel and is in sliding seal with the operation channel.
Drawings
FIG. 1 is a schematic structural diagram of an automatic pressure-regulating stone crushing and removing system according to the present embodiment;
FIG. 2 is a schematic structural diagram of a sheath in the automatic pressure-regulating stone-breaking and removing system according to the first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a sheath in an automatic pressure-regulating stone-breaking and removing system according to a second embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a sheath in an automatic pressure-regulating stone-breaking and removing system according to a third embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a regulating valve in the automatic pressure regulating type stone crushing and cleaning system according to the embodiment;
fig. 6 is an enlarged view of the end of the sheath tube away from the sheath body in the automatic pressure regulating stone crushing and cleaning system of the embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
As shown in fig. 1 and fig. 2, an automatic pressure-regulating stone crushing and removing system comprises an electronic mirror 4 and a mirror sheath, wherein the electronic mirror 4 comprises a liquid inlet channel 6. The endoscope sheath comprises a sheath body 2 and a sheath tube 1, wherein a liquid drainage channel 18 is arranged in the sheath tube 1, and a transition cavity 14 communicated with the liquid drainage channel 18 is arranged in the sheath body 2. The sheath body 2 be made by transparent material, the sheath body 2 on be equipped with sign line 22. Specifically, the sheath body 2 comprises a main body 26 and a cover plate 24, the cover plate 24 is located at one end of the main body 26 far away from the sheath tube 2, and the main body 26 and the cover plate 24 jointly enclose the transition cavity 14.
As shown in fig. 1 and 2, the sheath 2 is provided with a liquid outlet 16 and a pressure regulating port 15 which are communicated with the transition cavity 14, wherein the pressure regulating port 15 is arranged on a cover plate 24. Also included is a priming device 10 in communication with the inlet passage 6 and a suction device 8 in communication with the discharge port 16. A stone collecting container 11 and a waste liquid container 9 are arranged between the liquid outlet 16 and the suction device 8 in sequence. Used for respectively and intensively collecting the discharged calculus and the waste liquid. The sheath body 2 is also provided with an operation channel corresponding to the electronic mirror 4, and the electronic mirror 4 penetrates through the operation channel. The gap between the electron mirror 4 and the operation channel forms a pressure regulating port 15, and the sheath tube 1 has a simple structure.
As shown in fig. 1, fig. 2 and fig. 5, the device further comprises a renal pressure monitoring module, the renal pressure monitoring module comprises a pressure measuring pipe 3 and a hydraulic detection device 7 communicated with the pressure measuring pipe 3, an adjusting valve 19 is arranged between the hydraulic detection device 7 and the pressure measuring pipe 3, and the adjusting valve 19 is a two-position three-way valve. The hydraulic detection device 7 transmits pressure by liquid, so that real-time monitoring of the pressure is realized, the monitoring accuracy is high, and the response is timely. And a liquid adding channel 20 is arranged on the regulating valve 19, and the pressure measuring pipe 3 is communicated with the hydraulic detection device 7 and the liquid adding channel 20 through the regulating valve 19. And a pressure measuring channel 17 is also arranged in the sheath tube 1, and the pressure measuring channel 17 is communicated with the pressure measuring tube 3. The pressure measuring channel 17 is directly integrated in the sheath tube 1 and enters the human body along with the sheath tube 1, so that the pressure measurement of another channel is avoided, and the operation flow is simplified. The sheath tube 1 comprises an inner tube body 12 and an outer tube body 13, the liquid drainage channel 18 is arranged in the inner tube body 12, and a pressure measurement channel 17 is formed by a gap between the inner tube body 12 and the outer tube body 13. As shown in fig. 6, the ends of the inner tube 12 and the outer tube 13 far away from the sheath body 2 are free ends, and the free ends of the inner tube 12 and the outer tube 13 are integrally connected with each other. The outer tube body 13 is provided with a pressure measuring port 25 communicated with the pressure measuring channel 17, and the pressure measuring port 25 is arranged close to the free end of the outer tube body 13.
In the whole process, although the intra-renal pressure still has certain fluctuation, the fluctuation is more moderate, the amplitude is greatly reduced, the internal pressure burden of the human kidney in the operation process is reduced to the maximum extent, the operation risk is reduced, in addition, only the liquid inlet flow or the liquid discharge flow needs to be regulated in the operation process, the balance between the liquid inlet flow and the liquid discharge flow can be automatically achieved, and the operation procedure is simplified.
Example two
As shown in fig. 3, the present embodiment is different from the first embodiment in that: the sheath body 2 is also provided with an operation channel corresponding to the electronic mirror 4, and the electronic mirror 4 penetrates through the operation channel and is in sliding seal with the operation channel. And pressure regulating mouth 15 sets up for operation passageway independent, pressure regulating mouth 15 and the uncovered album of liquid device 5 intercommunication that sets up, when being full of the waste liquid in the transition chamber 14 and can't in time discharge or the leakage fluid dram 16 blocks up, partial waste liquid can get into album of liquid device 5 through pressure regulating mouth 15 and collect temporarily. The pressure regulating port 15 is provided with a switch 21 for controlling the opening amount of the pressure regulating port 15, the flow can be changed by adjusting the opening amount of the switch 21, and the operation procedure is further simplified. In addition, although the pressure in the kidney changes by a certain process, the amount of change is small by the pressure regulating port 15.
EXAMPLE III
As shown in fig. 4, compared with the embodiment, the difference of the embodiment is that the pressure regulating port 15 is not disposed on the cover plate 24, the sheath 2 is provided with the collecting pipe 23, the liquid discharge port 16 and the pressure regulating port 15 are both communicated with the transition cavity 14 through the collecting pipe 23, and the change of the liquid inlet flow rate and the liquid discharge flow rate is more sensitive and the regulating range is better along with the change of the opening amount of the switch 21.
In conclusion, the above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An automatic pressure-regulating type stone crushing and removing system comprises an electronic mirror (4) and a mirror sheath, wherein the electronic mirror (4) comprises a liquid inlet channel (6); the method is characterized in that: the endoscope sheath comprises a sheath body (2) and a sheath tube (1), a liquid drainage channel (18) is arranged in the sheath tube (1), and a transition cavity (14) communicated with the liquid drainage channel (18) is arranged in the sheath body (2); a liquid outlet (16) and a pressure regulating port (15) which are communicated with the transition cavity (14) are arranged on the sheath body (2);
the device also comprises a perfusion device (10) communicated with the liquid inlet channel (6) and a suction device (8) communicated with the liquid outlet (16);
still include the renal pressure monitoring module, the renal pressure monitoring module include pressure-measuring pipe (3) and with hydraulic pressure detection device (7) of pressure-measuring pipe (3) intercommunication, hydraulic pressure detection device (7) and pressure-measuring pipe (3) between be equipped with governing valve (19), governing valve (19) on be equipped with liquid feeding passageway (20), pressure-measuring pipe (3) through governing valve (19) and hydraulic pressure detection device (7) and liquid feeding passageway (20) alternative intercommunication.
2. The stone breaking and removing system according to claim 1, wherein: the sheath body make (2) by transparent material, sheath body (2) on be equipped with sign line (22).
3. The stone breaking and removing system according to claim 1, wherein: sheath body (2) include main part (26) and apron (24), apron (24) be located main part (26) and keep away from the one end of sheath pipe (1), main part (26) and apron (24) enclose synthetic transition chamber (14) jointly, pressure regulating mouth (15) set up on apron (24).
4. The stone breaking and removing system according to claim 1, wherein: the sheath pipe (1) is also internally provided with a pressure measuring channel (17), and the pressure measuring channel (17) is communicated with the pressure measuring pipe (3).
5. The stone breaking and removing system according to claim 4, wherein: the sheath tube (1) comprises an inner tube body (12) and an outer tube body (13), the liquid drainage channel (18) is arranged in the inner tube body (12), and a pressure measurement channel (17) is formed by a gap between the inner tube body (12) and the outer tube body (13).
6. The stone breaking and removing system according to claim 1, wherein: and the sheath body (2) is provided with a collecting pipe (23), and the liquid outlet (16) and the pressure regulating port (15) are communicated with the transition cavity (14) through the collecting pipe (23).
7. The stone breaking and removing system according to claim 1, wherein: the pressure regulating port (15) is communicated with the liquid collecting device (5) arranged on the opening.
8. The stone breaking and removing system according to claim 1, wherein: the pressure regulating port (15) is provided with a switch (21) for controlling the opening amount of the pressure regulating port (15).
9. The stone breaking and removing system according to any one of claims 1 to 5, wherein: an operation channel is further arranged on the sheath body (2), and the electronic mirror (4) penetrates through the operation channel; and a gap between the electronic mirror (4) and the operation channel forms a pressure regulating port (15).
10. The stone breaking and removing system according to any one of claims 1 to 8, wherein: the sheath body (2) is also provided with an operation channel, and the electronic mirror (4) penetrates through the operation channel and is in sliding seal with the operation channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911030338.0A CN110623728B (en) | 2019-10-28 | 2019-10-28 | Automatic pressure regulating type stone crushing and removing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911030338.0A CN110623728B (en) | 2019-10-28 | 2019-10-28 | Automatic pressure regulating type stone crushing and removing system |
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| Publication Number | Publication Date |
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| CN110623728A true CN110623728A (en) | 2019-12-31 |
| CN110623728B CN110623728B (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911030338.0A Active CN110623728B (en) | 2019-10-28 | 2019-10-28 | Automatic pressure regulating type stone crushing and removing system |
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| CN (1) | CN110623728B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116269643A (en) * | 2023-03-16 | 2023-06-23 | 杭州好克光电仪器有限公司 | Perfusion suction device capable of measuring intra-cavity pressure and using method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116269643A (en) * | 2023-03-16 | 2023-06-23 | 杭州好克光电仪器有限公司 | Perfusion suction device capable of measuring intra-cavity pressure and using method |
| CN116269643B (en) * | 2023-03-16 | 2023-10-03 | 杭州好克光电仪器有限公司 | Perfusion suction device capable of measuring intra-cavity pressure |
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| Publication number | Publication date |
|---|---|
| CN110623728B (en) | 2021-04-20 |
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