An invasive arterial blood pressure monitoring and fixing device

Abstract

The present invention relates to the technical field of medical devices, and discloses an invasive arterial blood pressure monitoring and fixing device, comprising a monitor and a base, the monitor comprising a three-way valve, an infusion pump, a flushing tube, a cable, a display screen, a vascular catheter and a sensor needle, a column is plugged into the inner side of the base, a mounting seat is arranged on the upper side of the column, a fixing component for fixing the display screen is arranged on the outer side of the column, the cable is arranged inside the fixing component, the column and the mounting seat, a first clip for fixing the infusion pump and a second clip for fixing the vascular catheter are arranged on the outer side of the mounting seat, and a winding shaft is arranged on the outer side of the mounting seat. The patient's blood pressure is displayed on the display screen through the sensor needle and the cable, and the height and angle of the vascular catheter are adjusted by adjusting the height and angle of the mounting seat, and the winding shaft retracts and releases the vascular catheter, which is convenient for adjusting the length of the vascular catheter, so that the vascular catheter is not easily pulled, thereby facilitating the fixing of the vascular catheter.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an invasive arterial blood pressure monitoring and fixing device. Background Art

[0002] Invasive arterial blood pressure monitoring is a method of monitoring blood pressure by directly inserting into the artery. This monitoring method usually involves inserting a thin catheter into the artery in the body to measure blood pressure in real time. Compared with non-invasive methods, invasive arterial blood pressure monitoring can provide more accurate and detailed blood pressure data because it directly measures the pressure inside the artery, avoiding the influence of skin and soft tissue.

[0003] This monitoring technology is often used in clinical situations that require continuous and precise blood pressure control, such as intensive care, during surgery, and during the diagnosis and treatment of specific diseases. The main advantages of invasive arterial blood pressure monitoring are its stability and accuracy, which can help medical professionals better understand patients' blood pressure changes and thus provide effective treatment and management. However, it also requires professional operating skills and appropriate equipment support to ensure safety and effectiveness.

[0004] The fixation methods for invasive arterial blood pressure monitoring generally include the following common techniques: 1. Use of catheter fixing clips: These devices are designed to securely fix the vascular catheter to ensure that its position in the patient's body remains unchanged. They are usually made of soft and durable materials, such as medical tape or special fixing tape, to prevent the movement or sliding of the catheter; 2. External fixation devices: In some cases, especially in surgical or intensive care environments, medical professionals may choose to use more secure external fixation devices, which can be fixed to the patient's body by screws or other means; Commonly used invasive arterial blood pressure monitoring equipment generally includes a three-way valve, an infusion pump, a vascular catheter, a sensor needle, a flushing tube, a cable, and a display screen, etc. One end of the infusion pump is connected to the three-way valve, and the other end of the infusion pump is connected to the flushing tube and the cable respectively, and the flushing tube and the cable are respectively connected to heparin saline and the display screen; the three-way valve is connected to the vascular catheter, and the vascular catheter is connected to the sensor needle. The existing technology generally squeezes the infusion pump so that the infusion pump is filled with heparin saline, and then the sensor needle is inserted into the patient's wrist blood vessel. Finally, the patient's real-time blood pressure data is displayed on the display screen through the detection of the sensor needle.

[0005] At present, during general anesthesia surgery, the existing technology usually rolls the vascular catheter randomly next to the operating table. However, the vascular catheter is easily pulled during the operation, causing the sensor needle to shake or fall off, and it is not convenient to adjust the height and angle of the vascular catheter, thereby making it inconvenient to fix the vascular catheter. Therefore, it does not meet the existing needs. We have proposed an invasive arterial blood pressure monitoring and fixing device. Summary of the invention

[0006] The present invention provides an invasive arterial blood pressure monitoring and fixing device, which has the beneficial effect of facilitating the fixing of a vascular catheter, and solves the problem mentioned in the above background technology that during general anesthesia surgery, the prior art usually rolls the vascular catheter randomly next to the operating table, but the vascular catheter is easily pulled during the operation, causing the sensor needle to shake or fall off, and it is inconvenient to adjust the height and angle of the vascular catheter, thereby making it inconvenient to fix the vascular catheter.

[0007] The present invention provides the following technical solution: an invasive arterial blood pressure monitoring and fixing device, comprising a monitor and a base, the monitor comprising a three-way valve, one end of the three-way valve is connected to an infusion pump, the infusion pump is connected to a flushing tube and a cable, the cable is connected to a display screen, the other end of the three-way valve is connected to a vascular catheter, the vascular catheter is connected to a sensor needle, a column is slidably inserted on the inner side of the base, a mounting seat is movably provided on the upper side of the column, a fixing component for fixing the display screen is provided on the outer side of the column, a first clip for fixing the infusion pump is installed on the outer side of the mounting seat, a second clip for fixing the vascular catheter is installed on the outer side of the mounting seat, a first baffle and a second baffle are also installed on the outer side of the mounting seat, a winding shaft is rotatably installed between the first baffle and the second baffle, and the winding shaft is used to reel up the vascular catheter.

[0008] As an optional solution of an invasive arterial blood pressure monitoring fixing device described in the present invention, wherein: a screw is threadedly connected to the inner side of the column, a first rotating member is sleeved on the end of the screw, the first rotating member is inserted on the inner side of the base, the inner ring of the first rotating member is in contact with the screw, and the outer ring of the first rotating member is in contact with the base.

[0009] As an optional solution of an invasive arterial blood pressure monitoring fixing device described in the present invention, wherein: a sleeve rod is rotatably inserted into the inner side of the screw rod, the sleeve rod is set as a round rod, an insertion rod is slidably inserted into the inner side of the sleeve rod, the insertion rod is set as a square rod, a limit block is installed on the outer side of the insertion rod, the limit block is slidably inserted into the inner side of the column, the upper end of the insertion rod is set on the outer side of the column, the upper end of the insertion rod is connected to the mounting seat, and balls are rollingly inserted into the bottom of the mounting seat, the number of the balls is set to several, and the balls are all in contact with the top of the column.

[0010] As an optional scheme of an invasive arterial blood pressure monitoring fixing device described in the present invention, wherein: a motor is installed on the inner side of the base, a plug-in shaft is installed on the output shaft of the motor, the plug-in shaft is arranged in a square rod shape, a connecting rod is provided on the outer side of the plug-in shaft, the connecting rod is arranged in a round rod shape, a connecting block is installed on the end of the connecting rod, the connecting block is arranged in a square block, a first connecting groove for use with the connecting block is provided at the bottom of the screw rod, a second connecting groove for use with the connecting block is provided at the bottom of the sleeve rod, and the connecting blocks are alternately inserted in the first connecting groove or the second connecting groove.

[0011] As an optional solution of an invasive arterial blood pressure monitoring fixing device described in the present invention, wherein: a clamping block is installed on the outer side of the connecting block, and a clamping slot connected to the second connecting slot is also opened at the bottom of the sleeve rod, the clamping slot is used in conjunction with the clamping block, and the clamping block is intermittently inserted in the clamping slot, and an elastic sheet is also provided at the bottom of the clamping slot, the number of the elastic sheets is set to be several, and several of the elastic sheets are evenly installed on the inner wall of the sleeve rod in a circumferential direction, the elastic sheet intermittently conflicts with the clamping block, an adjusting pin is slidably inserted into the side of the base, and the end of the adjusting pin is slidably connected to the connecting rod.

[0012] As an optional solution of an invasive arterial blood pressure monitoring fixing device described in the present invention, wherein: the fixing assembly includes a supporting plate installed on the outside of the column, support plates installed on both sides of the column, a sliding block slidably arranged on the side of one of the support plates, and a first spring connected between the sliding block and the support plate, the end of the cable is electrically connected to a plug, and the plug is installed on the support plate.

[0013] As an optional solution of an invasive arterial blood pressure monitoring and fixing device described in the present invention, the first baffle and the second baffle are both set as transparent plastic plates, the distance between the first baffle and the second baffle is between one and two times the diameter of the vascular catheter, and a rotating shaft is inserted in the middle of the second baffle, and the rotating shaft is connected to the winding shaft.

[0014] As an optional solution of the invasive arterial blood pressure monitoring and fixing device described in the present invention, wherein: a cavity balloon and a hard tube are connected to the middle part of the vascular catheter, the cavity balloon is configured as a hard tube, the hard tube is configured as an "L"-shaped tube, one end of the hard tube is fixedly connected to the vascular catheter, the other end of the hard tube is rotatably connected to the cavity balloon, and the second clamp clamps and fixes the cavity balloon.

[0015] As an optional solution of an invasive arterial blood pressure monitoring and fixing device described in the present invention, wherein: the first baffle has a side portion formed with a through groove for the hard tube to pass through, the winding shaft has an upper side portion formed with a groove body for inserting the hard tube, the hard tube is inserted into the groove body of the winding shaft, the second baffle has a side portion formed with a guide opening, the vascular catheter is inserted into the guide opening.

[0016] As an optional scheme of an invasive arterial blood pressure monitoring fixing device described in the present invention, wherein: the upper end of the screw rod is set to be a non-threaded round rod shape, the top of the screw rod is sleeved with a first gear, the first gear is set inside the column, the outside of the column is provided with a second gear intermittently meshing with the first gear, a fixing tube is installed in the middle of the second gear, the outside of the fixing tube is sleeved with a second rotating member, a straight rod is installed on the outside of the second rotating member, the end of the straight rod is inserted into the side of the column, a positioning ball is inserted into the end of the straight rod, a second spring is arranged on the inside of the straight rod, the two ends of the second spring are respectively connected to the positioning ball and the inner wall of the straight rod, a first positioning groove and a second positioning groove used in conjunction with the positioning ball are opened on the inside of the column, the positioning ball is clamped in the first positioning groove, a rotating rod is slidably inserted into the upper end of the fixing tube, the rotating rod is set to be a square rod, and the upper end of the rotating rod is slidably inserted into the inner side of the rotating shaft.

[0017] The present invention has the following beneficial effects:

[0018] 1. The invasive arterial blood pressure monitoring and fixing device squeezes the perfusion pump so that the heparin saline fills the perfusion pump through the flushing tube, inserts the sensor needle into the patient's wrist blood vessel, and uses medical tape to stick it to the patient's arm to avoid shaking of the sensor needle as much as possible. The perfusion pump is clamped and fixed by the setting of the first clamp, and the vascular catheter is clamped and fixed by the setting of the second clamp. Then, the sliding block is pulled outward, the display screen is placed on the supporting plate and pushed toward the plug, so that the plug is inserted into the jack of the display screen, and the patient's real-time blood pressure data is displayed on the display screen through the sensor needle and the cable, thereby monitoring the patient's blood pressure;

[0019] Moreover, by adjusting the height and angle of the mounting seat, it is convenient to adjust the height and angle of the vascular catheter, and by rotating the rotating shaft, the winding shaft is rotated, so that the winding shaft can retract and release the vascular catheter, which makes it convenient to adjust the length of the vascular catheter, thereby preventing the vascular catheter from being pulled, and facilitating the fixation of the vascular catheter.

[0020] The invasive arterial blood pressure monitoring fixing device, when the connecting block is inserted into the first connecting groove, the motor drives the inserting shaft to rotate, so that the inserting shaft drives the connecting block to rotate through the connecting rod, so that the connecting block drives the screw rod to rotate in the column, so that the column drives the mounting seat to move up and down, which is convenient for adjusting the height of the vascular catheter. At the same time, the column drives the inserting rod to move up and down together through the limit block, so that the inserting rod slides up and down in the sleeve rod, and the sleeve rod remains stationary under the action of its own gravity;

[0021] Moreover, when the sensor needle is inserted into the patient's blood vessel and the height of the mounting seat needs to be adjusted: the rotating screw drives the first gear to rotate, and through the meshing of the first gear and the second gear, the second gear drives the rotating shaft to rotate through the fixed tube and the rotating rod, so that the winding shaft can properly retract and release the vascular catheter, and the second gear is pressed down, so that the positioning ball slides from the first positioning groove into the second positioning groove, so that the second gear is disengaged from the first gear, and the vascular catheter can be retracted and released by manually rotating the second gear;

[0022] The adjusting pin is pushed upward, so that the adjusting pin drives the connecting rod, the connecting block and the clamping block to move upward, so that the connecting rod is inserted into the first connecting groove and does not contact the screw rod. At the same time, the connecting block is inserted into the second connecting groove, and when the clamping block squeezes the elastic sheet and is inserted into the clamping groove, the elastic sheet then abuts against the lower end of the clamping block to prevent the connecting block from slipping out of the second connecting groove. Finally, the motor drives the sleeve rod and the insertion rod to rotate through the connecting block, so that the insertion rod drives the mounting seat and the vascular catheter to rotate between zero and one hundred and eighty degrees, which is convenient for adjusting the height and angle of the vascular catheter, thereby improving the practicality of the fixing device.

[0023] 3. When the winding shaft of the invasive arterial blood pressure monitoring fixture rotates, it drives the hard tube to rotate synchronously, so that the upper end of the hard tube and the cavity bag rotate relative to each other. At the same time, the lower end of the hard tube drives the vascular catheter to be wound around the winding shaft, so as to avoid the distortion of the vascular catheter as much as possible and keep the vascular catheter unobstructed, thereby further improving the accuracy of blood pressure monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the cutaway structure of the present invention.

[0026] Figure 3 It is a schematic diagram of the internal three-dimensional structure of the present invention.

[0027] Figure 4 It is a schematic diagram of the explosion of the internal structure of the present invention.

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the sliding block of the present invention.

[0029] Figure 6 It is a schematic diagram of the cross-section structure of the sliding block of the present invention.

[0030] Figure 7 It is a schematic diagram of the structure of the monitoring instrument of the present invention.

[0031] Figure 8 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0032] Fig. 9 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0033] Fig.10 For the present invention Figure 2 Enlarged structural diagram at B in the middle.

[0034] Fig.11 For the present invention Figure 4 Enlarged structural diagram at point C in the middle.

[0035] In the figure: 100, monitor; 101, three-way valve; 102, perfusion pump; 103, flushing tube; 104, cable; 105, display screen; 106, vascular catheter; 107, sensor needle; 110, base; 120, column; 130, mounting seat; 140, screw rod; 141, first rotating member; 142, sleeve rod; 143, plug rod; 144, limit block; 145, ball bearing; 150, motor; 151, plug shaft; 152, connecting rod; 153, connecting block; 154, first connecting groove; 155, second connecting groove; 160, clamping block; 161, clamping groove; 162, elastic sheet; 163, Adjusting pin; 170, fixing assembly; 171, supporting plate; 172, supporting plate; 173, sliding block; 174, first spring; 175, plug; 180, first clip; 190, second clip; 191, first baffle; 192, second baffle; 200, winding shaft; 201, rotating shaft; 210, cavity; 211, hard tube; 212, guide port; 220, first gear; 221, second gear; 222, fixing tube; 223, second rotating member; 224, straight rod; 225, positioning ball; 226, second spring; 227, first positioning groove; 228, second positioning groove; 229, rotating rod. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1: This embodiment is intended to solve the problem that during general anesthesia surgery, the vascular catheter is usually randomly rolled up and placed next to the operating table. However, during the operation, the vascular catheter is easily pulled, causing the sensor needle to shake or fall off, and it is not convenient to adjust the height and angle of the vascular catheter, thereby making it difficult to fix the vascular catheter. Please refer to Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig.10 An invasive arterial blood pressure monitoring fixture includes a monitor 100 and a base 110. The monitor 100 includes a three-way valve 101, a perfusion pump 102 connected to one end of the three-way valve 101, a flushing tube 103 and a cable 104 connected to the perfusion pump 102, a display screen 105 connected to the cable 104, a vascular catheter 106 connected to the other end of the three-way valve 101, and a sensor needle 107 connected to the vascular catheter 106. The flushing tube 103 is connected to a hanging bottle of heparinized saline. The monitor 100 is a technical means well known to technicians in this field and will not be described in detail here.

[0038] A column 120 is slidably inserted into the inner side of the base 110, a mounting seat 130 is movably arranged on the upper side of the column 120, a fixing component 170 for fixing the display screen 105 is arranged on the outer side of the column 120, and the fixing component 170 includes a supporting plate 171 fixedly installed on the outer side of the column 120, support plates 172 fixedly installed on both sides of the column 120, a sliding block 173 slidably arranged on the side of one of the support plates 172, and a first spring 174 fixedly connected between the sliding block 173 and the support plate 172, an end of the cable 104 is electrically connected to a plug 175, the plug 175 is fixedly installed on the other support plate 172, and the cable 104 is arranged together inside the fixing component 170, the column 120 and the mounting seat 130.

[0039] A first clamp 180 for clamping the perfusion pump 102 is fixedly installed on the outer side of the mounting seat 130, and a second clamp 190 for clamping the vascular catheter 106 is fixedly installed on the outer side of the mounting seat 130. The first clamp 180 and the second clamp 190 are both configured as elastically deformable arc-shaped pieces. A first baffle 191 and a second baffle 192 are also fixedly installed on the outer side of the mounting seat 130. A winding shaft 200 is rotatably installed between the first baffle 191 and the second baffle 192, and the winding shaft 200 is used to reel up the vascular catheter 106.

[0040] The first baffle 191 and the second baffle 192 are both configured as transparent plastic plates, which are convenient for observing the vascular catheter 106 wound on the winding reel 200. The spacing between the first baffle 191 and the second baffle 192 is between one and two times the diameter of the vascular catheter 106, so that the vascular catheter 106 will not be stacked up and down when being wound, thereby making it easier to observe whether the blood in the vascular catheter 106 is filled and there are no bubbles. The middle part of the second baffle 192 is plugged with a rotating shaft 201, and the rotating shaft 201 is fixedly connected to the middle part of the winding reel 200.

[0041] In this embodiment: squeeze the perfusion pump 102 so that the heparin saline solution fills the perfusion pump 102 through the flushing tube 103, insert the sensor needle 107 into the patient's wrist blood vessel, and use medical tape to stick it to the patient's arm to avoid shaking of the sensor needle 107 as much as possible, clamp and fix the perfusion pump 102 through the setting of the first clamp 180, and clamp and fix the vascular catheter 106 through the setting of the second clamp 190, then pull the sliding block 173 outward, place the display screen 105 on the supporting plate 171 and push the plug 175 so that the plug 175 is inserted into the jack of the display screen 105, and display the patient's real-time blood pressure data on the display screen 105 through the sensor needle 107 and the cable 104, so as to monitor the patient's blood pressure;

[0042] Moreover, by adjusting the height and angle of the mounting seat 130, it is convenient to adjust the height and angle of the vascular catheter 106, and by rotating the rotating shaft 201, the winding shaft 200 is rotated, so that the winding shaft 200 can retract and release the vascular catheter 106, which is convenient for adjusting the length of the vascular catheter 106, so that it is not easy to pull the vascular catheter 106, thereby facilitating the fixation of the vascular catheter 106, and solving as much as possible the problem that during general anesthesia surgery, the prior art usually rolls up the vascular catheter at will next to the operating table, but the vascular catheter is easily pulled during the operation, causing the sensor needle to shake or fall off, and it is not convenient to adjust the height and angle of the vascular catheter, thereby making it inconvenient to fix the vascular catheter.

[0043] Embodiment 2: This embodiment is intended to solve the problem that it is difficult to adjust the height and angle of the vascular catheter 106, which easily affects the practicality of the fixing device. This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 Fig.10 and Fig.11The inner side of the column 120 is threadedly connected with a screw rod 140, and the lower end of the screw rod 140 is fixedly sleeved with a first rotating member 141, and the first rotating member 141 is fixedly inserted into the inner side of the base 110. The inner ring of the first rotating member 141 fits with the screw rod 140, and the outer ring of the first rotating member 141 fits with the base 110. A sleeve rod 142 is rotatably inserted into the inner side of the screw rod 140, and the sleeve rod 142 is set as a round rod. An insertion rod 143 is slidably inserted into the inner side of the sleeve rod 142, and the insertion rod 143 is set as a square rod. A limited block 144 is fixedly installed on the outer side of the insertion rod 143. The number of limit blocks 144 is set to two, and a groove body that slides with the limit block 144 is opened on the inner side of the column 120. The limit block 144 is slidably inserted in the groove body of the column 120. The upper end of the insertion rod 143 is set on the outer side of the column 120, and the upper end of the insertion rod 143 is fixedly connected to the bottom of the mounting seat 130. A ball 145 is rollingly inserted at the bottom of the mounting seat 130. The number of balls 145 is set to several, and several balls 145 are evenly arranged at the bottom of the mounting seat 130 in a circumferential direction, and the balls 145 are all in contact with the top of the column 120.

[0044] A motor 150 is fixedly installed on the inner side of the base 110, and an insertion shaft 151 is fixedly installed on the output shaft of the motor 150. The insertion shaft 151 is set to a square rod shape, and a connecting rod 152 is slidably sleeved on the outer side of the insertion shaft 151. The connecting rod 152 is set to a round rod shape, and a connecting block 153 is fixedly installed on the end of the connecting rod 152. The connecting block 153 is set to a square block. A first connecting groove 154 for use with the connecting block 153 is opened at the bottom of the screw rod 140, and a second connecting groove 155 for use with the connecting block 153 is opened at the bottom of the sleeve rod 142. The connecting block 153 is alternately inserted in the first connecting groove 154 or the second connecting groove 155. In the initial state, the connecting block 153 is inserted in the first connecting groove 154.

[0045] A card block 160 is fixedly installed on the top of the connecting block 153, and the card block 160 is set to be spherical. A card slot 161 connected to the second connecting slot 155 is also provided at the bottom of the sleeve rod 142. The card slot 161 is used in conjunction with the card block 160, and the card block 160 is intermittently inserted in the card slot 161. An elastic sheet 162 is also provided at the bottom of the card slot 161. The number of elastic sheets 162 is set to be several, and several elastic sheets 162 are evenly installed on the inner wall of the sleeve rod 142 in an annular direction. The elastic sheet 162 intermittently conflicts with the card block 160. An adjusting pin 163 is slidably inserted on the side of the base 110, and the end of the adjusting pin 163 is set to be "T"-shaped. A fixing ring is fixedly sleeved on the outer side of the connecting rod 152, and a ring groove is provided on the side of the fixing ring to slide with the end of the adjusting pin 163, and the end of the adjusting pin 163 is slidably inserted in the ring groove.

[0046] The upper end of the screw rod 140 is set to be a round rod without thread. The top of the screw rod 140 is fixedly sleeved with a first gear 220. The first gear 220 is set inside the column 120. The outer side of the column 120 is provided with a second gear 221 that intermittently meshes with the first gear 220, and the size of the second gear 221 is larger than the size of the first gear 220, so that the number of turns of the second gear 221 is less than the number of turns of the first gear 220, so that when the mounting seat 130 is raised or lowered, the winding shaft 200 can properly retract and release the vascular catheter 106. A fixed tube 222 is fixedly installed in the middle of the second gear 221, and a second rotating member 223 is fixedly sleeved on the outer side of the fixed tube 222. The first rotating member 141 and the second rotating member 223 are both set as bearings. A straight rod 224 is fixedly installed on the outer ring of the second rotating member 223, and the end of the straight rod 224 is inserted into the side of the column 120.

[0047] A positioning ball 225 is slidably inserted into the end of the straight rod 224, and a second spring 226 is arranged on the inner side of the straight rod 224. The two ends of the second spring 226 are respectively fixedly connected to the positioning ball 225 and the inner wall of the straight rod 224. A first positioning groove 227 and a second positioning groove 228 used in conjunction with the positioning ball 225 are opened on the inner side of the column 120. The positioning ball 225 is clamped in the first positioning groove 227, and the resistance of the positioning ball 225 sliding out of the first positioning groove 227 is greater than the downward force exerted on the second gear 221, so that the positioning ball 225 will not slide out of the first positioning groove 227 in a natural state. When the positioning ball 225 is located in the first positioning groove 227: the first gear 220 and the second gear 221 are meshed with each other, and when the positioning ball 225 is located in the second positioning groove 228: the second gear 221 drops away from the first gear 220, thereby disengaging from the first gear 220.

[0048] A rotating rod 229 is slidably inserted into the upper end of the fixed tube 222. The rotating rod 229 is set as a square rod. The upper end of the rotating rod 229 is slidably inserted into the inner side of the rotating shaft 201, and the length of the rotating rod 229 is greater than the maximum distance between the fixed tube 222 and the rotating shaft 201, so as to prevent the rotating rod 229 from falling out of the fixed tube 222 or the rotating shaft 201.

[0049] In this embodiment: when the connecting block 153 is inserted into the first connecting groove 154, the motor 150 drives the plug shaft 151 to rotate, so that the plug shaft 151 drives the connecting block 153 to rotate through the connecting rod 152, so that the connecting block 153 drives the screw rod 140 to rotate in the column 120, so that the column 120 drives the mounting seat 130 to move up and down, so as to adjust the height of the vascular catheter 106. At the same time, the column 120 drives the plug rod 143 to move up and down together through the limit block 144, so that the plug rod 143 slides up and down in the sleeve rod 142, and the sleeve rod 142 remains stationary under the action of its own gravity;

[0050] Moreover, when the sensor needle 107 is inserted into the patient's blood vessel and the height of the mounting seat 130 needs to be adjusted: the rotating screw 140 drives the first gear 220 to rotate, and the meshing of the first gear 220 and the second gear 221 causes the second gear 221 to drive the rotating shaft 201 to rotate through the fixed tube 222 and the rotating rod 229, so that the winding shaft 200 can properly retract and release the vascular catheter 106, and the second gear 221 is pressed down, so that the positioning ball 225 slides from the first positioning groove 227 into the second positioning groove 228, so that the second gear 221 is disengaged from the first gear 220, and the vascular catheter 106 can be retracted and released by manually rotating the second gear 221;

[0051] The adjusting pin 163 is pushed upward, so that the adjusting pin 163 drives the connecting rod 152, the connecting block 153 and the clamping block 160 to move upward, so that the connecting rod 152 is inserted into the first connecting groove 154 and does not contact the screw rod, and at the same time, the connecting block 153 is inserted into the second connecting groove 155, and when the clamping block 160 squeezes the elastic sheet 162 and inserts it into the clamping groove 161, the elastic sheet 162 then abuts against the lower end of the clamping block 160 to prevent the connecting block 153 from slipping out of the second connecting groove 155. Finally, the motor 150 drives the sleeve rod 142 and the insertion rod 143 to rotate through the connecting block 153, so that the insertion rod 143 drives the mounting seat 130 and the vascular catheter 106 to rotate between zero and one hundred and eighty degrees, which is convenient for adjusting the height and angle of the vascular catheter 106, thereby improving the practicality of the fixing device.

[0052] Embodiment 3: This embodiment aims to solve the problem that when the winding shaft 200 rotates, the vascular catheter 106 is easily twisted and deformed, thereby squeezing the internal space of the vascular catheter 106, causing the vascular catheter 106 to be blocked, thereby affecting the monitoring accuracy. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig.10 A cavity 210 and a hard tube 211 are connected to the middle part of the vascular catheter 106. The cavity 210 is set to be a hard tube, and the hard tube 211 is set to be an "L"-shaped tube. One end of the hard tube 211 is fixedly connected to the vascular catheter 106, and the other end of the hard tube 211 is rotatably connected to the cavity 210, and the rotatable connection remains sealed. The second clamp 190 clamps and fixes the cavity 210. A through groove for the hard tube 211 to pass through is opened on the side of the first baffle 191. A groove body for plugging in the hard tube 211 is opened on the upper side of the winding shaft 200. The hard tube 211 is plugged into the groove body of the winding shaft 200. A guide port 212 is opened on the side of the second baffle 192, and the vascular catheter 106 is plugged into the guide port 212.

[0053] In this embodiment: when the winding shaft 200 rotates, it drives the hard tube 211 to rotate synchronously, so that the upper end of the hard tube 211 and the cavity 210 rotate relative to each other. At the same time, the lower end of the hard tube 211 drives the vascular catheter 106 to wrap around the winding shaft 200, avoiding the twisting and deformation of the vascular catheter 106 as much as possible, maintaining the patency of the vascular catheter 106, thereby further improving the accuracy of blood pressure monitoring.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An invasive arterial blood pressure monitoring fixture, comprising a monitor (100) and a base (110), the monitor (100) comprising a three-way valve (101), one end of the three-way valve (101) being connected to an infusion pump (102), the infusion pump (102) being connected to a flushing tube (103) and a cable (104), the cable (104) being connected to a display screen (105), the other end of the three-way valve (101) being connected to a vascular catheter (106), the vascular catheter (106) being connected to a sensor needle (107), characterized in that: A column (120) is slidably inserted into the inner side of the base (110); a mounting seat (130) is movably provided on the upper side of the column (120); a screw rod (140) is threadedly connected to the inner side of the column (120); a first rotating member (141) is sleeved on the end of the screw rod (140); the first rotating member (141) is inserted into the inner side of the base (110); an inner ring of the first rotating member (141) is in contact with the screw rod (140); an outer ring of the first rotating member (141) is in contact with the base (110); a sleeve rod (142) is rotatably inserted into the inner side of the screw rod (140); the sleeve rod (142) is provided The sleeve rod (142) is a round rod, an insert rod (143) is slidably inserted into the inner side of the sleeve rod (142), the insert rod (143) is set as a square rod, a limit block (144) is installed on the outer side of the insert rod (143), the limit block (144) is slidably inserted into the inner side of the column (120), the upper end of the insert rod (143) is set on the outer side of the column (120), the upper end of the insert rod (143) is connected to the mounting seat (130), and a ball (145) is rollingly inserted into the bottom of the mounting seat (130), the number of the ball (145) is set to be a plurality, and the ball (145) is in contact with the top of the column (120); A motor (150) is mounted on the inner side of the base (110); an output shaft of the motor (150) is mounted with an insertion shaft (151); the insertion shaft (151) is configured as a square rod; a connecting rod (152) is slidably sleeved on the outer side of the insertion shaft (151); the connecting rod (152) is configured as a round rod; a connecting block (153) is mounted on the end of the connecting rod (152); the connecting block (153) is configured as a square block; a first connecting groove (154) for use with the connecting block (153) is provided at the bottom of the lead screw (140); a second connecting groove (155) for use with the connecting block (153) is provided at the bottom of the sleeve rod (142); the connecting block (153) is provided at the bottom of the sleeve rod (142); 153) are alternately inserted into the first connecting groove (154) or the second connecting groove (155), a clamping block (160) is installed on the outer side of the connecting block (153), and a clamping groove (161) connected to the second connecting groove (155) is also opened at the bottom of the sleeve rod (142), the clamping groove (161) and the clamping block (160) are used in conjunction with each other, and the clamping block (160) is intermittently inserted in the clamping groove (161), and an elastic sheet (162) is also arranged at the bottom of the clamping groove (161), the number of the elastic sheets (162) is set to be a plurality, and the plurality of the elastic sheets (162) are evenly installed on the inner wall of the sleeve rod (142) in a circumferential direction, and the elastic sheets (162) ) intermittently abuts against the card block (160), an adjusting pin (163) is slidably inserted into the side of the base (110), and the end of the adjusting pin (163) is slidably connected to the connecting rod (152), and a fixing component (170) for fixing the display screen (105) is arranged on the outside of the column (120), and the fixing component (170) includes a supporting plate (171) installed on the outside of the column (120), support plates (172) installed on both sides of the column (120), a sliding block (173) slidably arranged on the side of one of the support plates (172), and a first spring (173) connected between the sliding block (173) and the support plate (172). 74), the end of the cable (104) is electrically connected to a plug (175), the plug (175) is mounted on the support plate (172), a first clip (180) for fixing the perfusion pump (102) is mounted on the outside of the mounting seat (130), a second clip (190) for fixing the vascular catheter (106) is mounted on the outside of the mounting seat (130), a first baffle (191) and a second baffle (192) are also mounted on the outside of the mounting seat (130), a winding shaft (200) is rotatably mounted between the first baffle (191) and the second baffle (192), and the winding shaft (200) is used to reel up the vascular catheter (106).

2. The invasive arterial blood pressure monitoring and fixing device according to claim 1, characterized in that: The first baffle (191) and the second baffle (192) are both configured as transparent plastic plates; the distance between the first baffle (191) and the second baffle (192) is between one and two times the diameter of the vascular catheter (106); a rotating shaft (201) is inserted into the middle of the second baffle (192); and the rotating shaft (201) is connected to the winding shaft (200).

3. The invasive arterial blood pressure monitoring and fixing device according to claim 2, characterized in that: A cavity balloon (210) and a hard tube (211) are connected in the middle of the vascular catheter (106); the cavity balloon (210) is configured as a hard tube, and the hard tube (211) is configured as an "L"-shaped tube. One end of the hard tube (211) is fixedly connected to the vascular catheter (106), and the other end of the hard tube (211) is rotatably connected to the cavity balloon (210). The second clamp (190) clamps and fixes the cavity balloon (210).

4. The invasive arterial blood pressure monitoring and fixing device according to claim 3, characterized in that: A through slot for the hard tube (211) to pass through is formed on the side of the first baffle (191), a slot body for inserting the hard tube (211) is formed on the upper side of the winding shaft (200), the hard tube (211) is inserted into the slot body of the winding shaft (200), and a guide opening (212) is formed on the side of the second baffle (192), the vascular catheter (106) is inserted into the guide opening (212).

5. The invasive arterial blood pressure monitoring and fixing device according to claim 2, characterized in that: The upper end of the screw rod (140) is configured to be a round rod without threads. A first gear (220) is sleeved on the top of the screw rod (140). The first gear (220) is arranged inside the column (120). A second gear (221) intermittently meshing with the first gear (220) is arranged on the outside of the column (120). A fixed tube (222) is installed in the middle of the second gear (221). A second rotating member (223) is sleeved on the outside of the fixed tube (222). A straight rod (224) is installed on the outside of the second rotating member (223). The end of the straight rod (224) is plugged into the side of the column (120). The end of the straight rod (224) is connected to the side of the column (120). A positioning ball (225) is inserted, a second spring (226) is arranged on the inner side of the straight rod (224), two ends of the second spring (226) are respectively connected to the positioning ball (225) and the inner wall of the straight rod (224), a first positioning groove (227) and a second positioning groove (228) for use with the positioning ball (225) are opened on the inner side of the column (120), the positioning ball (225) is clamped in the first positioning groove (227), a rotating rod (229) is slidably inserted on the upper end of the fixed tube (222), the rotating rod (229) is set as a square rod, and the upper end of the rotating rod (229) is slidably inserted on the inner side of the rotating shaft (201).

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