CN113229796B

CN113229796B - Arm-tied type blood pressure sensor

Info

Publication number: CN113229796B
Application number: CN202110535167.8A
Authority: CN
Inventors: 唐利珍; 张猛成
Original assignee: Shenzhen Jinchengrui Medical Technology Co ltd
Current assignee: Shenzhen Jinchengrui Medical Technology Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2022-08-30
Anticipated expiration: 2041-05-17
Also published as: CN113229796A

Abstract

The utility model relates to an arm formula blood pressure sensor of tying relates to medical instrument's technical field, and it includes transfer line, pressure sensing module and ligature mechanism, and the one end of transfer line is provided with the pjncture needle, and pressure sensing module includes pressure sensitive strip and transmission piece, and the pressure sensitive strip is connected with the transfer line, pressure sensitive strip and transmission piece electric signal connection, and ligature mechanism includes bottom plate and ligature area, and pressure sensing module installs on the bottom plate, and the ligature area is with the bottom plate ligature on human arm. This application can be with the ligature of pressure sensing module ligature mechanism on human arm, when the posture of patient's transform health, the pressure-sensitive piece still can keep the level with the heart, so set up the restriction that has reduced pressure sensing module to patient's activity, has improved the flexibility that patient moved.

Description

Arm-tied type blood pressure sensor

Technical Field

The application relates to the field of medical equipment, in particular to an arm tying type blood pressure sensor.

Background

The medical pressure sensor is an invasive arteriovenous pressure monitoring system, has the characteristic of continuously and dynamically monitoring the arteriovenous pressure, and greatly meets the clinical requirements of numerous medical personnel. At present, pressure sensors used clinically are mostly filled with liquid through a pressure extension pipe to convert pressure parameters such as blood pressure and central venous pressure into liquid pulse signals, then the pulse signals are detected through a pressure sensitive sheet, the pressure sensors are connected with a monitor through cables, and then the pressure sensitive sheet is detected out to display the pulse signals on the monitor.

At present, the chinese patent application with publication number CN107595268A, whose publication number is 2018, 01, 19 and publication number is CN107595268A, proposes a wireless transmission medical pressure sensor, which includes a transmission pipeline, a pressure sensing device and a perfusion device, wherein a puncture needle is arranged at the head end of the transmission pipeline, the tail end of the transmission pipeline is connected with the front end of the pressure sensing device, and the front end of the perfusion device is connected with the tail end of the pressure sensing device; the pressure sensing device comprises a bottom plate, a return-to-zero tee joint and a wireless transmitting unit, a channel is arranged in the bottom plate, a pressure sensitive sheet is arranged on the side wall of the channel and electrically connected with the wireless transmitting unit, the wireless transmitting unit is in electric signal connection with a monitor, and the return-to-zero tee joint is connected with the front end of the channel.

When the blood pressure monitoring device is used, the puncture needle is punctured in a venous blood vessel of a human body, and in order to accurately monitor the blood pressure of the heart, the pressure sensor is required to be arranged on a support frame of the venous transfusion rod, so that the zero-returning tee joint is horizontal to the central point of the heart, and the monitored data are more accurate.

In view of the above-mentioned related art, the inventor believes that the return-to-zero tee needs to be mounted on the support frame during measurement, and the heart center point needs to be horizontal with the return-to-zero tee, thus limiting the movement of the patient.

Disclosure of Invention

In order to improve the flexibility of the patient's activities when the patient uses the pressure sensor, the present application provides an arm-tied blood pressure sensor.

The application provides a pair of formula blood pressure sensor is tied up to arm adopts following technical scheme:

the utility model provides an arm formula blood pressure sensor of tying up, includes transfer line, pressure sensing module and ligature mechanism, the one end of transfer line is provided with the pjncture needle, pressure sensing module includes pressure sensitive strip and transmission piece, the pressure sensitive strip with the transfer line is connected, the pressure sensitive strip with transmission piece signal of telecommunication is connected, ligature mechanism includes bottom plate and ligature area, pressure sensing module installs on the bottom plate, the ligature area will the bottom plate ligature is on human arm.

By adopting the technical scheme, when the pressure sensor is used, the bottom plate is bound on the arm of a human body through the binding belt, the pressure sensitive sheet is kept horizontal with the heart of a patient, and then the puncture is used for carrying out venipuncture on the patient, so that the pressure sensitive sheet can obtain a pulse signal of the blood pressure of the patient; the pressure sensitive sheet converts the pulse signal into an electric signal and transmits the electric signal to the monitor through the transmission piece; because the pressure sensing module is bound on the arm of the human body through the binding mechanism, when the posture of the body of the patient is changed, the pressure sensitive sheet can still be kept horizontal with the heart, so that the limitation of the pressure sensing module on the movement of the patient is reduced, and the flexibility of the movement of the patient is improved.

Optionally, the binding mechanism comprises a clamping assembly, and the pressure sensing module is clamped on the bottom plate through the clamping assembly.

Through adopting above-mentioned technical scheme, pressure sensing module installs on the bottom plate with the mode of joint, and the dismouting between the pressure sensing module of being convenient for and the bottom plate has improved pressure sensor's availability factor.

Optionally, the clamping component includes two first fixture blocks that are symmetrically arranged, two the first fixture block all with the bottom plate slides and connects, two first draw-in grooves have all been seted up on the first fixture block, two the first draw-in grooves set up relatively, the pressure sensing module includes the shell, the shell joint is in the first draw-in groove.

Through adopting above-mentioned technical scheme, because first fixture block can slide relatively or back on the back for interval between two first draw-in grooves can change, and then the different shell of joint model has improved the suitability.

Optionally, the first fixture block is fixedly connected to the bottom plate through a fastening bolt and a fastening nut.

Through adopting above-mentioned technical scheme, use fastening bolt and fastening nut to fix the jack catch on the bottom plate after, relative movement takes place with the bottom plate again for first fixture block is difficult, and the shell joint is difficult for coming off from the bottom plate again after on the bottom plate, has improved the reliability of joint.

Optionally, an elastic sheet is fixedly connected to the bottom plate, the elastic sheet is arranged between the two first clamping grooves, and the elastic sheet is abutted to the housing.

Through adopting above-mentioned technical scheme, back in the shell inserts first draw-in groove, the flexure strip promotes the shell and makes the shell support tightly with the lateral wall of first draw-in groove, has reduced the probability that the shell deviates from first draw-in groove, has improved the reliability of joint.

Optionally, the housing is provided with a positioning hole, and the clamping assembly further comprises a positioning pin, and the positioning hole is clamped with the positioning pin.

Through adopting above-mentioned technical scheme, back in the shell inserts first draw-in groove, the locating pin inserts in the locating hole to the flexure strip promotes the shell, makes the locating pin be difficult for deviating from the locating pin hole, so the progress has reduced the probability that the shell deviates from first draw-in groove, has improved the reliability of joint.

Optionally, a second clamping groove is formed in the bottom plate, the clamping assembly further comprises a second clamping block, the second clamping block is fixedly connected to the first clamping block, and the second clamping block is slidably arranged in the second clamping groove.

By adopting the technical scheme, under the guiding action of the second clamping groove, the first clamping block is not easy to deflect from the bottom plate, so that the positioning pin is conveniently and accurately clamped into the positioning hole, and the clamping accuracy and reliability are improved; and before fastening bolt and fastening nut are used to fix first fixture block on the bottom plate, second fixture block and second draw-in groove can reduce the probability that first fixture block drops from the bottom plate, and the operating personnel of being convenient for installs the shell on to the bottom plate, and the operating personnel of being convenient for simultaneously adjusts first fixture block.

Optionally, a limiting groove is formed in the bottom plate, a first limiting block is fixedly connected to the second clamping block, and the first limiting block is arranged in the limiting groove in a sliding mode.

Through adopting above-mentioned technical scheme, first stopper is injectd the distance of sliding of second fixture block with the spacing groove, and operating personnel is when the second fixture block that slides, and the second fixture block is difficult for droing from the bottom plate, has improved the degree of difficulty when operating personnel adjusts first fixture block.

Optionally, a third clamping groove is further formed in the bottom plate, a third clamping block is fixedly connected to one end, far away from the second clamping block, of the first clamping block, and the third clamping block is arranged in the third clamping groove in a sliding mode.

Through adopting above-mentioned technical scheme, third fixture block and second fixture block intelligibility thing are to the joint and are leading, have further reduced the probability that first fixture block and bottom plate take place to deflect, and then the accurate card of locating pin of being convenient for goes into the locating hole, has improved the accuracy and the reliability of joint.

Optionally, a fourth clamping groove used for clamping the fastening nut is formed in the bottom plate, and the fastening nut is arranged in the fourth clamping groove in a sliding mode.

Through adopting above-mentioned technical scheme, because the joint effect of fourth draw-in groove for the nut can only take place relative slip and can't take place relative rotation with the bottom plate, when using fastening bolt fastening joint, rotates fastening bolt and can make fastening bolt and fastening nut threaded connection, the degree of difficulty when having reduced fixed first fixture block.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the setting of ligature mechanism, pressure sensing module accessible ligature mechanism is on human arm, and when the posture of patient's transform health, the pressure-sensitive strip still can keep the level with the heart, so set up the restriction that has reduced pressure sensing module to patient's activity, has improved the flexibility that patient moved.

2. Through the setting of flexure strip, back in the shell inserts first draw-in groove, the flexure strip promotes the shell and makes the shell support tightly with the lateral wall of first draw-in groove, has reduced the probability that the shell deviates from first draw-in groove, has improved the reliability of joint.

3. Through the setting of locating pin and locating hole, back in the shell inserts first draw-in groove, the locating pin inserts in the locating hole to the flexure strip promotes the shell, makes the locating pin difficult deviate from the locating pin hole, so progress and reduced the probability that the shell deviates from first draw-in groove, improved the reliability of joint.

4. Through the arrangement of the second clamping groove and the second clamping block, the first clamping block is not easy to deflect from the bottom plate, so that the positioning pin is conveniently and accurately clamped into the positioning hole, and the clamping accuracy and reliability are improved; and before fastening bolt and fastening nut are used to fix first fixture block on the bottom plate, second fixture block and second draw-in groove can reduce the probability that first fixture block drops from the bottom plate, and the operating personnel of being convenient for installs the shell on to the bottom plate, and the operating personnel of being convenient for simultaneously adjusts first fixture block.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a portion of a pressure sensing module according to an embodiment of the present application, illustrating the connection relationship between a pressure sensing strip and an infusion tube;

FIG. 3 is a schematic view of the overall structure at a ligating mechanism according to an embodiment of the application;

FIG. 4 is an exploded view of the ligature mechanism according to embodiments of the present application;

FIG. 5 is a schematic view of a portion of a clamping assembly according to an embodiment of the present application;

FIG. 6 is a schematic diagram of the overall structure of the base plate according to the embodiment of the present application;

FIG. 7 is an exploded view of the clamping assembly according to the embodiment of the present disclosure, aiming to show the connection relationship between the first stopper and the second stopper;

fig. 8 is a schematic overall structural diagram of another perspective of the backplane according to the embodiment of the present application, which is intended to reveal a structure of a fourth card slot.

Description of the reference numerals: 100. a transfusion tube; 110. a puncture instrument; 120. a dropping cylinder; 130. a regulator; 140. puncturing needle; 150. a first three-way valve; 160. a second three-way valve; 200. a pressure sensing module; 210. a pressure-sensitive sheet; 220. a signal line; 230. a housing; 231. a clamping part; 232. positioning holes; 300. a binding mechanism; 310. a base plate; 311. a second card slot; 312. a third card slot; 313. a second through hole; 314. a third limiting block; 315. a fourth card slot; 316. a limiting groove; 320. binding the plates; 321. binding belt holes; 330. connecting columns; 340. an elastic sheet; 350. binding tapes; 351. a first connection end; 352. a second connection end; 353. an elastic portion; 400. a clamping assembly; 410. a first clamping block; 411. a first card slot; 412. positioning pins; 420. a second fixture block; 430. a third fixture block; 440. a second limiting block; 450. a locking block; 451. a first through hole; 460. fastening a bolt; 470. fastening a nut; 480. a first stopper.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses formula blood pressure sensor is tied up to arm. Referring to fig. 1, the arm-tied blood pressure sensor includes an infusion tube 100 for infusion, a pressure sensing module 200 for detecting blood pressure, and a tying mechanism 300 for tying the pressure sensing module 200 to an arm of a human body. The upper end of the infusion tube 100 is connected with a puncture outfit 110 and a dropping cylinder 120, the puncture outfit 110 is inserted into the infusion bag to draw the liquid medicine, and the drawn liquid medicine flows into the dropping cylinder 120 for transition. The infusion tube 100 is further provided with an adjuster 130 for adjusting the infusion speed, and the adjuster 130 is provided below the drip chamber 120. The pressure sensor module is disposed below the regulator 130 and connected to the infusion tube 100, and the pressure sensor module is mounted on the banding mechanism 300. The bottommost end of the infusion tube 100 is connected with a puncture needle 140, and the puncture needle 140 is punctured in the vein of the patient.

Referring to fig. 1 and 2, the pressure sensor module includes a pressure sensing chip 210 for sensing pressure in the infusion tube 100, a transmission member for transmitting a signal, and a housing 230 for fixing. The pressure sensitive sheet 210 and the transmission member are embedded on the inner wall of the housing 230, the measuring end of the pressure sensitive sheet 210 passes through the infusion tube 100 and extends into the infusion tube 100, and the pressure sensitive sheet 210 is used for converting the pulse signal of the pressure change in the infusion tube 100 into an electrical signal. Since the puncture needle 140 is punctured in the vein of the patient, when the blood pressure of the patient changes, the pressure in the infusion tube 100 also changes, so that the pressure sensitive sheet 210 can detect the blood pressure of the patient in real time.

Referring to fig. 1 and 2, the pressure sensitive sheet 210 is electrically connected to a transmission member, the transmission member may be a wireless signal transmitter or a signal line 220, in this embodiment, the transmission member selects the signal line 220, one end of the signal line 220 is connected to the output end of the pressure sensitive sheet 210, and the other end of the signal line 220 is connected to the monitor. The pressure sensitive sheet 210 transmits the detected blood pressure signal to the monitor, and medical staff can obtain the blood pressure information of the patient in real time by observing the numerical value of the monitor.

Referring to fig. 3 and 4, the strapping mechanism 300 includes a base plate 310 for mounting the housing 230 and a strapping plate 320 for engaging the arm of the patient, the strapping plate 320 being integrally formed on the base plate 310 by an attachment post 330. The binding mechanism 300 further includes a binding band 350 for binding the board to the arm of the human body, the binding band 350 including a first connecting end 351 and a second connecting end 352, the first connecting end 351 and the second connecting end 352 being respectively provided at both ends of the elastic portion 353. The two ends of the binding plate 320 are provided with binding belt holes for the binding belt 350 to pass through, and a part of the first connecting end 351 passes through one of the binding belt holes 321 and then is sewn with the part which does not pass through the binding belt hole 321, so that the binding belt 350 and the binding plate 320 are fixed. The second connecting end 352 is wound on the arm of the patient and then penetrates through the other banding hole 321, the second connecting end 352 is a magic tape, and the male end of the magic tape penetrates through the banding hole 321 and then is bonded with the female end.

In the initial state, the first connecting end 351 of the binding band 350 is always fixed opposite to the binding plate 320; when the blood pressure sensor is used, the housing 230 is first mounted on the base plate 310, and then the binding plate 320 is bound to the arm of the human body by the binding band 350, and the pressure-sensitive sheet 210 is kept flush with the heart. Because the plate is bound on the arm of the human body, the pressure sensitive sheet 210 can be kept horizontal with the heart when the patient stands, sits or lies, so that the limitation of the pressure sensing module 200 on the movement of the patient is reduced, and the flexibility of the movement of the patient is improved.

Referring to fig. 3, in order to make the more comfortable fixed ligature board 320 of patient, alleviate the painful sense of pressing against the army that ligature board 320 caused, ligature board 320 sets up and is the arc, and two ligature hole holes 321 set up respectively at the both ends of ligature board 320 arc length. So ligature board 320 is higher with patient's arm laminating degree, has reduced the pressure of ligature board 320 to patient's arm, and then has alleviateed the painful sense of pressing against the armlet that ligature board 320 caused to the arm. In order to facilitate the arm movement of the patient and reduce the tightening feeling of the binding band 350 to the arm, the elastic part 353 is connected in front of the first connecting end 351 and the second connecting end 352, so that when the biceps brachii muscle of the patient contracts, the elastic part 353 can elastically deform, the binding band 350 can be tightly bound on the arm of the patient, and meanwhile, the pressure applied to the arm by the binding band 350 is not easily increased, so that the tightening feeling of the binding band 350 to the arm is reduced.

Referring to fig. 4 and 5, the binding mechanism 300 further includes two clamping assemblies 400 for clamping the housing 230, the two clamping assemblies 400 are arranged in a mirror image manner, and the clamping assemblies 400 are arranged on the side of the bottom plate 310 away from the binding plate 320. The latch assembly 400 includes a first latch 410, a second latch 420, and a third latch 430, where the first latch 410, the second latch 420, and the third latch 430 are integrally formed, the second latch 420 is disposed at one end of the first latch 410, and the third latch 430 is disposed at the other end of the first latch 410.

Referring to fig. 4 and 6, the bottom plate 310 is provided with a second engaging groove 311 for engaging the second engaging block 420 and a third engaging groove 312 for engaging the third engaging block 430, and the length directions of the second engaging groove 311 and the third engaging groove 312 are parallel to each other. The second slot 311 is a T-shaped slot, the second latch 420 is latched in the second slot 311, and the second latch 420 can slide in the second slot 311 along the length direction of the second slot 311; the third block 430 is a through slot, and the third block 430 is slidably disposed in the third slot 312. Thus, the two first fixtures 410 can slide on the bottom plate 310 oppositely or reversely, so as to adjust the distance between the two first fixtures 410.

Referring to fig. 4 and 5, a second limiting block 440 is further integrally formed at an end of the third latch 430 away from the first latch 410, and when the third latch 430 is inserted into the third slot 312, the second limiting block 440 abuts against an end surface of the bottom plate 310 close to the binding plate 320. Therefore, under the limiting action of the second limiting block 440, the third clamping block 430 is not easily separated from the third clamping groove 312, so that the guiding reliability of the third clamping block 430 is improved, and the probability of breaking the first clamping block 410 can be reduced.

Referring to fig. 6 and 7, when the medical staff slides the first latch 410, the second latch 420 is easily disengaged from the second slot 311, and the third latch 430 is easily disengaged from the third slot 312, so that the first latch 410 is completely disengaged from the bottom plate 310, and the first latch 410 is easily lost. In order to reduce the probability of the first latch 410 being separated from the base plate 310, the base plate 310 is provided with a limiting groove 316, and the length direction of the limiting groove 316 is parallel to the length direction of the second latch groove 311. A first limiting block 480 is integrally formed on an end surface of the second locking block 420 close to the bottom plate 310, the first limiting block 480 is slidably disposed in the limiting groove 316, and the first limiting block 480 can only slide in the limiting groove 316. When the first stopper 480 is located in the stopper groove 316, the second latch 420 is always located in the second engaging groove 311, so that the probability that the second latch 420 is disengaged from the second engaging groove 311 is reduced, and the probability that the first latch 410 is disengaged from the base plate 310 is further reduced.

Referring to fig. 4, after the distance between the first fixture 410 is adjusted, the first fixture 410 may be fixed to the base plate 310 by fastening the bolt 460 and the fastening nut 470.

Referring to fig. 5 and 6, a locking block 450 is integrally formed on first fixture block 410, the locking block 450 is provided with a first through hole 451 for fastening bolt 460 to pass through, and the bottom plate 310 is provided with a second through hole 313 for fastening bolt 460 to pass through. The cross section of the second through hole 313 is rectangular, and the length direction of the second through hole 313 is parallel to the length direction of the first card slot 411.

Referring to fig. 4, after the distance between first fixture 410 is adjusted, fastening bolt 460 is inserted through first through hole 451 and second through hole 313, and fastening nut 470 is tightened on fastening bolt 460, so that the fixation between first fixture 410 and base plate 310 is completed.

Referring to fig. 4 and 8, since the gap between the bottom plate 310 and the ligating plate 320 is small, the fastening nut 470 needs to be disposed between the bottom plate 310 and the ligating plate 320, so that it is not easy for a medical staff to fix the fastening nut 470. Therefore, a plurality of third limit blocks 314 are integrally formed on one end surface of the bottom plate 310 close to the binding plate 320, and the third limit blocks 314 are arranged at two sides of the second through hole 313 in the length direction, so that a fourth clamping groove 315 is formed between the third limit blocks 314 at the two sides of the second through hole 313. The third stopper 314 is clamped on the outer circumferential surface of the fastening nut 470, and the fastening nut 470 can slide in the fourth slot 315. Thus, the fastening bolt 460 and the fastening nut 470 can be relatively rotated only by rotating the fastening bolt 460 from the side of the bottom plate 310 away from the binding plate 320, and the fastening bolt 460 and the fastening nut 470 can be tightened or loosened; also, when adjusting the position of first fixture 410, fastening nut 470 may slide in fourth slot 315 to match the position of first fixture 410.

Referring to fig. 4 and 5, the two first engaging blocks 410 are both provided with a first engaging groove 411, and the two first engaging grooves 411 are opposite to each other. The housing 230 is provided with two clamping portions 231, and the clamping portions 231 are inserted into the first clamping slots 411, so that the housing 230 and the bottom plate 310 can be connected together. In order to reduce the probability of the housing 230 falling off the bottom plate 310, an elastic piece 340 is fixedly connected to the bottom plate 310, and the elastic piece 340 is disposed between the two first slots 411. When the clamping portion 231 is inserted into the first clamping groove 411, the elastic piece 340 abuts against the housing 230, and under the pushing action of the elastic piece 340, the friction force between the clamping portion 231 and the inner wall of the first clamping groove 411 is increased, so that the probability that the housing 230 falls off from the bottom plate 310 is reduced.

Referring to fig. 4 and 7, in order to further reduce the probability that the housing 230 falls off from the bottom plate 310, the fastening portion 231 is further provided with a positioning hole 232, and a positioning pin 412 is integrally formed on an end surface of the first latch 410 opposite to the bottom plate 310. When the clamping portion 231 is inserted into the first clamping groove 411, the positioning pin 412 is inserted into the positioning hole 232, and then the positioning pin 412 is not easily separated from the positioning hole 232 under the action of the elastic piece 340, so that the probability that the housing 230 falls off from the bottom plate 310 is further reduced.

Referring to fig. 1 and 2, a first three-way valve 150 is connected in series to a liquid transfer pipe 100 at the lower end of the pressure sensor module, and a bypass of the first three-way valve 150 communicates with the atmosphere. Before the pressure sensor module is used, the infusion tube 100 at the pressure sensitive sheet 210 is communicated with the puncture needle 140 by adjusting the first three-way valve 150, and the bypass of the first three-way valve 150 is communicated with the atmosphere, so that the pressure in the infusion tube 100 can be consistent with the atmospheric pressure, and the pressure sensitive sheet 210 is zeroed, thereby improving the detection precision of the pressure sensitive sheet 210. The second three-way valve 160 is also connected in series on the infusion tube 100 between the first three-way valve 150 and the puncture needle 140, when the blood sampling operation needs to be performed on the patient, the second three-way valve 160 can be rotated to communicate the bypass of the puncture needle 140 and the bypass of the second three-way valve 160, and then the blood sampling needle is communicated on the bypass of the second three-way valve 160, so that the number of times of puncturing the patient can be reduced, and the injury to the patient is further reduced.

The implementation principle of the arm-bound blood pressure sensor in the embodiment of the application is as follows:

before puncturing a patient, selecting a pressure sensing module 200 to be used, adjusting a clamping assembly 400 according to a shell 230 on the pressure sensing module 200, tightening a fastening bolt 460 after the clamping assembly 400 is adjusted, so that a first clamping block 410 and a bottom plate 310 are relatively fixed, inserting the shell 230 into a first clamping groove 411, and embedding a positioning pin 412 into a positioning hole 232, so that the installation between the pressure sensing module 200 and the bottom plate 310 is completed; then the binding band 350 is used for binding the binding plate 320 on the arm of the patient, and the height of the binding plate 320 is adjusted to enable the pressure sensitive sheet 210 to be flush with the heart of the patient; then, the first three-way valve 150 is adjusted to enable the bypass of the first three-way valve 150 to be communicated with the atmosphere, the pressure sensitive sheet 210 is communicated with the puncture needle 140, the pressure sensitive sheet 210 is zeroed, the first three-way valve 150 is adjusted again after the pressure sensitive sheet 210 is zeroed, the bypass of the first three-way valve 150 is closed, and then the vein puncture can be performed on the patient. After the puncture needle 140 punctures the vein of the patient, the blood pressure in the vein can be transmitted to the pressure-sensitive sheet 210 through the infusion tube 100, the pressure-sensitive sheet 210 can convert the hydraulic pulse signal into an electric signal, then the electric signal is transmitted to the monitor through the signal line 220, and the medical staff can monitor the blood pressure of the patient by observing the monitor.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An arm-tied blood pressure sensor is characterized in that; the pressure sensing infusion set comprises an infusion tube (100), a pressure sensing module (200) and a binding mechanism (300), wherein a puncture needle (140) is arranged at one end of the infusion tube (100), the pressure sensing module (200) comprises a pressure sensitive sheet (210) and a transmission piece, the pressure sensitive sheet (210) is connected with the infusion tube (100), the pressure sensitive sheet (210) is in electrical signal connection with the transmission piece, the binding mechanism (300) comprises a bottom plate (310) and a binding band (350), the pressure sensing module (200) is installed on the bottom plate (310), and the binding band (350) binds the bottom plate (310) on an arm of a human body;

the binding mechanism (300) comprises a clamping assembly (400), and the pressure sensing module (200) is clamped on the bottom plate (310) through the clamping assembly (400);

the clamping assembly (400) comprises two first clamping blocks (410) which are symmetrically arranged, the two first clamping blocks (410) are connected with the bottom plate (310) in a sliding manner, first clamping grooves (411) are formed in the two first clamping blocks (410), the two first clamping grooves (411) are oppositely arranged, the pressure sensing module (200) comprises a shell (230), and the shell (230) is clamped in the first clamping grooves (411);

a second clamping groove (311) is formed in the bottom plate (310), the clamping assembly (400) further comprises a second clamping block (420), the second clamping block (420) is fixedly connected to the first clamping block (410), and the second clamping block (420) is slidably arranged in the second clamping groove (311);

a third clamping groove (312) is further formed in the bottom plate (310), a third clamping block (430) is fixedly connected to one end, far away from the second clamping block (420), of the first clamping block (410), and the third clamping block (430) is slidably arranged in the third clamping groove (312).

2. An arm-tied blood pressure sensor according to claim 1, wherein: the first fixture block (410) is fixedly connected to the bottom plate (310) through a fastening bolt (460) and a fastening nut (470).

3. An arm-tied blood pressure sensor according to claim 2, wherein: an elastic sheet (340) is fixedly connected to the bottom plate (310), the elastic sheet (340) is arranged between the two first clamping grooves (411), and the elastic sheet (340) is abutted to the shell (230).

4. An arm-tied blood pressure sensor according to claim 3, wherein: the shell (230) is provided with a positioning hole (232), the clamping assembly (400) further comprises a positioning pin (412), and the positioning hole (232) is clamped with the positioning pin (412).

5. An arm-tied blood pressure sensor according to claim 1, wherein: the bottom plate (310) is provided with a limiting groove (316), the second clamping block (420) is fixedly connected with a first limiting block (480), and the first limiting block (480) is arranged in the limiting groove (316) in a sliding mode.

6. An arm-tied blood pressure sensor according to claim 2, wherein: and a fourth clamping groove (315) used for clamping the fastening nut (470) is formed in the bottom plate (310), and the fastening nut (470) is arranged in the fourth clamping groove (315) in a sliding manner.