Probe system

Abstract

The invention provides a probe system. The probe system comprises a conveying pipe, a pressure sensing device, a fixing device and a probe, the pressure sensing device is arranged on the conveying pipe and measures the blood pressure in the conveying pipe, the pressure can be directly transmitted to the probe, other monitoring equipment or a pressure gauge does not need to be connected, and additional risks such as perfusion leakage are avoided; the fixing device comprises a fixing part with an opening and a clamping part connected with the fixing part, the clamping part has elasticity, the conveying pipe penetrates through the fixing part and is detachably connected with the fixing device, and the probe is detachably connected with the clamping part, so that when the probe is fixedly connected with the conveying pipe, the probe is detachably connected with the clamping part; furthermore, when the probe needs to be detached, the clamping part is elastic and can be expanded, so that the clamping part is separated from the probe, the probe is convenient to clean, and the probe is connected with the conveying pipe without a movable part such as a button or a turning cover, so that cleaning is further facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical technology, and in particular to a probe system. Background Art

[0002] In cardiac surgery extracorporeal circulation support systems such as extracorporeal membrane oxygenation (ECMO) and cardiopulmonary bypass, real-time monitoring of the patient's blood oxygen saturation, body temperature, and blood circuit pressure is crucial. Usually, a blood oxygen probe is fixed to the measured pipeline to monitor the pressure of the measured pipeline. At present, an external tee is required to connect other monitoring equipment or a pressure gauge to measure the pressure in the pipeline. The addition of a tee and pipeline will increase additional risks, such as perfusion leakage and air inflow into the negative pressure pipeline. In addition, the fixing structure of the probe and the measured pipeline contains a mechanical button or a flip-up structure, which is not conducive to cleaning, especially when blood or other viscous liquids enter, it is difficult to clean.

[0003] It should be noted that the information disclosed in the background technology section of the invention is only intended to deepen the understanding of the general background technology of the invention, and should not be regarded as an admission or any form of implication that the information constitutes prior art already known to those skilled in the art. Summary of the Invention

[0004] The object of the present invention is to provide a probe system that can monitor the pressure in a pipeline and is easy to clean.

[0005] To achieve the above-mentioned purpose, the present invention provides a probe system, including a delivery tube, a pressure sensing device, a fixing device and a probe, wherein the pressure sensing device is arranged on the delivery tube, and the pressure sensing device is used to measure the blood pressure in the delivery tube; the fixing device includes a fixing portion having an opening and a clamping portion connected to the fixing portion, the clamping portion extends outward from the edge of the opening of the fixing portion, and the clamping portion is elastic. The delivery tube is passed through the fixing portion, and the delivery tube is detachably connected to the fixing device; the probe is detachably connected to the clamping portion, and when the probe is fixedly connected to the delivery tube, the pressure sensing area of ​​the probe abuts against the pressure sensing device.

[0006] Optionally, a through hole is provided on the side wall of the delivery pipe, and a first protrusion adapted to the through hole is provided on the pressure sensing device; and / or, the pressure sensing device includes a pressure sensor, a printed circuit board provided on the pressure sensor, and pins provided on the printed circuit board.

[0007] Optionally, the first protrusion is bonded to the delivery tube; and / or, the probe system further includes a protective member, which covers the pressure sensing device, one end of the protective member is detachably connected to the outer surface of the delivery tube, and the other end of the protective member is detachably connected to the probe.

[0008] Optionally, the protective member has a second protrusion at one end close to the delivery pipe, and the side wall of the delivery pipe has a groove adapted to the second protrusion.

[0009] Optionally, a third protrusion is provided on the side wall of the delivery pipe, the third protrusion has a first groove, and the pressure sensing device is provided in the first groove.

[0010] Optionally, a positioning piece is provided on the side wall of the delivery pipe, and the positioning piece is spaced apart from the pressure sensing device; the fixing device further includes an end cover, which is sleeved on the delivery pipe, and the end cover is detachably connected to the positioning piece.

[0011] Optionally, the delivery pipe includes a body and a joint, the body and the joint are coaxially arranged, and the body is connected to the joint; the end cover and the joint are integrally formed or the end cover and the joint are detachably abutted.

[0012] Optionally, a fourth protrusion is provided on the clamping portion, and a second groove adapted to the fourth protrusion is provided on the surface of the probe facing the conveying pipe; or a fifth protrusion is provided on the surface of the probe facing the conveying pipe, and a third groove adapted to the fifth protrusion is provided on the surface of the clamping portion.

[0013] Optionally, an optical sensor and a temperature sensor are provided on the surface of the probe facing the delivery pipe. When the probe is fixedly connected to the delivery pipe, the optical sensor and the temperature sensor abut against the outer surface of the delivery pipe.

[0014] Optionally, the pressure sensing area of ​​the probe is formed on the outer surface of the probe by cold pressing, and the pressure sensing area of ​​the probe and the outer surface of the probe are glued together.

[0015] The above-mentioned probe system includes a delivery tube, a pressure sensing device, a fixing device and a probe. The pressure sensing device is provided on the delivery tube. The pressure sensing area of ​​the probe is connected to the pressure sensing device. The pressure sensor device is used to measure the blood pressure in the delivery tube. The pressure can be directly transmitted to the probe, thereby eliminating the need to connect other monitoring equipment or pressure gauges, avoiding additional risks such as perfusion leakage; the fixing device includes a fixing portion having an opening and a clamping portion connected to the fixing portion. The clamping portion extends outward from the edge of the opening of the fixing portion and is elastic. The delivery tube is passed through the fixing portion. The delivery tube and the fixing device are detachably connected. The probe and the clamping portion are detachably connected. Therefore, when the probe and the delivery tube are fixedly connected, that is, when the fixing device connects the delivery tube and the probe, the delivery tube and the fixing device are detachably connected. At the same time, the probe and the clamping portion are detachably connected. When the probe needs to be disassembled, the clamping portion can be stretched open due to its elasticity, so that the clamping portion is separated from the probe, facilitating cleaning of the probe. The connection between the probe and the delivery tube has no movable parts such as buttons or flip covers, further facilitating cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the overall structure of a probe system provided in one embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure except the probe shown in FIG; Figure 3 for Figure 1 Exploded view of the structure except the probe shown in ; Figure 4 for Figure 2 Exploded view of the pressure sensing device; Figure 5 for Figure 1 Schematic diagram of the probe structure shown in . DETAILED DESCRIPTION

[0017] The probe system proposed in the present invention is described in further detail below, in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are simplified and not to exact scale, and are intended solely to facilitate and clarify the purpose of the embodiments of the present invention. To make the purposes, features, and advantages of the present invention more readily apparent, please refer to the accompanying drawings. It should be noted that the structures, proportions, and sizes illustrated in the drawings are intended solely to facilitate understanding and reading by those skilled in the art, and are not intended to limit the implementation of the present invention. Any structural modifications, changes in proportions, or adjustments in size, as long as they produce the same or similar effects and achieve the same objectives as the present invention, are still within the scope of the technical content disclosed herein. The specific design features of the present invention disclosed herein, including, for example, specific dimensions, orientations, positions, and shapes, will be determined in part by the specific application and environment in which they are intended. Furthermore, in the embodiments described below, the same reference numerals may be used across different drawings to represent the same parts or parts with the same functions, and their repeated descriptions may be omitted. In this specification, similar reference numerals and letters are used to refer to similar items, so once an item is defined in one figure, it need not be further discussed in subsequent figures. In addition, if the method described herein includes a series of steps, the order in which the steps are presented herein is not necessarily the only order in which the steps can be performed, and some of the steps described may be omitted and / or some other steps not described herein may be added to the method.

[0018] It should be noted that, in this document, relational terms such as first and second, etc., are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations, nor should they be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Moreover, the terms "comprises," "includes," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element. The singular forms "a", "an" and "the" include plural referents, the term "or" is generally used in a sense including "and / or", the term "several" is generally used in a sense including "at least one", the term "at least two" is generally used in a sense including "two or more", and the term "multiple" is generally used in a sense including "at least two".

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like, indicating positions or positional relationships, are based on the positions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In the description of the present invention, unless otherwise expressly specified or limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium; they can be internal communication between two components or an interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] Please refer to Figure 1-Figure 5 The probe system 10 of one embodiment includes a delivery tube 100, a pressure sensing device, a fixing device 200 and a probe 300. The probe 300 is a non-consumable part, and the delivery tube 100, the pressure sensing device and the fixing device 200 are all consumable parts. Figure 2 and Figure 3 As shown in FIG. 1 , the delivery tube 100 is a blood line.

[0021] For details, please combine Figure 2 and Figure 3 The pressure sensing device 400 is provided on the delivery tube 100. The pressure sensing device is used to measure the blood pressure in the delivery tube 100. The pressure can be directly transmitted to the probe, thereby eliminating the need to connect other monitoring equipment or pressure gauges, avoiding additional risks such as perfusion leakage, and thus completing the measurement of pressure indicators without adding additional measurement pipelines. In one embodiment, Figure 3As shown, a through hole 110 is defined on the side wall of the delivery tube 100, and a first protrusion is provided on the pressure sensing device 400 to mate with the through hole. Specifically, a protrusion (i.e., the first protrusion) is provided on the bottom of the pressure sensing device 400 (near the surface of the delivery tube 100). This protrusion passes through the through hole 110, allowing the pressure sensing device 400 to contact the blood or other measured liquid within the delivery tube 100, thereby enabling pressure measurement within the delivery tube 100 without the need for external measurement lines. The first protrusion can be bonded to the inner wall of the through hole 110 to ensure a tight seal.

[0022] Furthermore, in one embodiment, if Figure 4 As shown, the pressure sensor device 400 includes a pressure sensor 410, a printed circuit board 420 provided on the pressure sensor 410, and a pin 430 provided on the printed circuit board 420. In this embodiment, a first protrusion is provided on the pressure sensor 410. The printed circuit board 420 is a PCB board, a metal part 421 on the printed circuit board 420 is welded to the pressure sensor 410, and the upper surface of the printed circuit board 420 is welded to the pin 430. The pin 430 is used to abut against the pressure sensing area of ​​the probe 300, thereby achieving the measurement of the pressure in the delivery pipe 100, and the pressure sensing device 400 has a compact structure. In addition, the pin 430 abuts against the pressure sensing area of ​​the probe 300, that is, the pressure sensing connection between the consumable part and the non-consumable part has no moving structure, which is not only waterproof but also easy to clean.

[0023] In one embodiment, the probe system further includes a protective member 500, which covers the pressure sensing device 400. The other end of the protective member 500 is detachably connected to the probe 300. Specifically, the protective member 500 is a protective cover that protects the pressure sensing device 400 from damage. The protective member 500 has a cavity, so that when it covers the pressure sensing device 400, the pressure sensing device 400 can be placed in the cavity. When the probe 300 (i.e., the non-consumable portion) is connected to the consumable portion, the probe 300 is connected to the top surface of the protective member 500. At the same time, the bottom surface of the protective member 500, after covering the pressure sensing device 400, is connected to the outer surface of the delivery tube 100. The bottom surface of the protective member 500 and the outer surface of the delivery tube 100 can be fixed by bonding or by snapping. In addition, the outer contour of the protective member 500 interacts with the probe end to play a positioning role, that is, the probe end of the probe 300 has a groove that is adapted to the outer contour of the protective member 500, and the pressure sensing area is located at the bottom of the groove, so that when the probe 300 is connected to the consumable part, the protective member 500 is stuck in the groove. At the same time, the pin 430 of the pressure sensing device 400 abuts against the pressure sensing area to achieve measurement of the pressure in the delivery tube 100.

[0024] In another embodiment, the end of the protective member 500 proximal to the delivery tube 100 has a second protrusion, and the sidewall of the delivery tube 100 has a slot adapted to fit the second protrusion. Specifically, in this embodiment, two opposing edges of the edge of the protective member 500 proximal to the opening of the delivery tube 100 extend outward to form the second protrusion. The sidewall of the delivery tube 100 may have a radially outwardly extending protrusion with a slot. When the protective member 500 is placed over the pressure sensing device, the second protrusion can be locked in the slot, thereby securing the protective member 500 to the delivery tube 100.

[0025] Furthermore, in one embodiment, a third protrusion is provided on the sidewall of the delivery tube 100. The third protrusion has a first groove, that is, the third protrusion has a cavity and an opening, and the opening and the cavity are connected. The aforementioned through-hole is located within the third protrusion, so that the entire pressure sensing device can be placed within the cavity, thereby better protecting the pressure sensing device. In this embodiment, the shape of the cavity of the protective member 500 is adapted to the outer contour of the protrusion, that is, the protective member 500 is sleeved over the protrusion. When the protective member has a second protrusion, the grooves of the delivery tube are located on both sides of the protrusion in the axial direction.

[0026] Please refer to Figure 2 and Figure 3 The fixing device 200 includes a fixing portion 210 having an opening and a clamping portion 220 connected to the fixing portion 210. The opening extends axially to both ends of the fixing portion 210. The clamping portion 220 extends outward from the edge of the fixing portion 210. The clamping portion 220 is elastic. In this embodiment, there are two clamping portions 220, which are arranged opposite to each other and each of which forms a certain angle with the fixing portion 210. The delivery tube 100 is inserted into the fixing portion 210. That is, the fixing portion 210 is clamped on the outer wall of the delivery tube 100, and the delivery tube 100 passes through the fixing portion 210. The delivery tube 100 and the fixing device 200 are detachably connected. When the probe 300 is fixedly connected to the delivery tube 100, that is, when the fixing device 200 connects the delivery tube 100 to the probe 300, the delivery tube 100 and the fixing device 200 are detachably connected. At the same time, the probe 300 and the clamping portion 220 are detachably connected. When the probe 300 needs to be disassembled, the clamping portion 220 is elastic and can be stretched open, so that the clamping portion 220 and the probe 300 are separated, which facilitates cleaning of the probe 300. In addition, the connection between the probe 300 and the delivery tube 100 has no movable parts such as buttons or flip covers, which further facilitates cleaning.

[0027] In one embodiment, a positioning member 120 is provided on the sidewall of the delivery tube 100. The positioning member 120 is spaced apart from the pressure sensing device 400, that is, the positioning member 120 and the pressure sensing device 400 are spaced apart in the axial direction, and the positioning member 120 and the pressure sensing device 400 are located at both ends of the portion of the delivery tube 100 where the positioning member 120 and the pressure sensing device 400 overlap. The fixing device 200 also includes an end cap 230, which is mounted on the delivery tube 100 and is detachably connected to the positioning member 120. In other words, when the delivery tube 100 is engaged with the fixing portion 210, the end cap 230 is mounted on the side of the delivery tube 100 away from the pressure sensing device 400, and the end cap 230 is detachably connected to the positioning member 120. The end cap 230 and the positioning member 120 can be detachably connected by means such as a snap connection. In this embodiment, the end cap 230 has a protrusion 231, and the positioning member 120 has a groove adapted to the protrusion 231, so that when the end cap 230 is connected to the positioning member 120, the protrusion 231 can be stuck in the groove, thereby achieving positioning. Further, in one embodiment, the end cap 230 has ridges spaced apart in the circumferential direction, and correspondingly, the fixing portion 210 has a groove extending through the circumference, and the grooves and the ridges correspond one-to-one, so that after the positioning member 120 and the protrusion 231 are matched and positioned, the ridges can be stuck in the corresponding grooves, thereby fixing the delivery pipe 100 to the fixing device 200. It should be noted that in other embodiments, the end cap 230 may also have grooves spaced apart in the circumferential direction, and the end of the fixing portion 210 may have ridges corresponding one-to-one to the grooves.

[0028] Furthermore, in one embodiment, in order to make the fixation between the delivery pipe 100 and the fixing device 200 tighter, a plurality of grooves running through the circumference are also provided on the end of the fixing portion 210 away from the end cover 230, and convex strips corresponding to the grooves are provided on the outer wall of the delivery pipe 100, so that when the delivery pipe 100 is passed through the fixing portion 210, the convex strips are engaged with the grooves.

[0029] In one embodiment, the delivery tube 100 includes a body 100a and a connector 100b, the body 100a and the connector 100b are coaxially arranged and connected, and the end cap 230 is detachably abutted against the connector 100b. Figure 3 As shown. The body 100a is connected to connectors 100b at both ends, and the end cap 230 is removably connected to one of the connectors 100b, that is, the end cap 230 is mounted on one of the connectors 100b. In another embodiment, the end cap 230 is integrally formed with one of the connectors 100b, so that the end cap 230 and connector 100b can be made into different inner diameters. In this case, the probe consumable can be more flexibly configured on clinical pipelines with different inner diameters without having to replace probes of different specifications.

[0030] Please refer to Figure 2 and Figure 3 In one embodiment, the clamping portion 220 is provided with a fourth protrusion 221, and the surface 310 of the probe 300 facing the delivery tube 100 is provided with a second groove 320 that matches the fourth protrusion 221. Once the probe 300 is positioned with the delivery tube 100, it is secured by a fixing device, and the fourth protrusion 221 on the clamping portion 220 and the second groove 320 form a snap-fit ​​connection. Because the clamping portion 220 is elastic, the fourth protrusion 221 can be easily inserted into the second groove 320 during the snap-fit ​​connection. To separate the consumable and non-consumable components, simply grip the clamping portion 220 with two fingers. The elasticity of the clamping portion 220 allows the fourth protrusion 221 and the second groove 320 to unlock, allowing for disassembly. By designing the fixing and clamping portions as snap-fit ​​devices, unlocking and installation can be achieved using only two fingers, making operation convenient. The number of fourth protrusions 221 can be four, with two fourth protrusions distributed symmetrically on each clamping portion. This arrangement facilitates mold adjustment. It should be noted that the number of fourth protrusions 221 can also be two. In other embodiments, a fifth protrusion is provided on the surface 310 of the probe facing the delivery tube, and a third groove is provided on the surface of the clamping portion to mate with the fifth protrusion, similarly achieving a snap-fit ​​connection.

[0031] like Figure 5 As shown, in one embodiment, an optical sensor 600 and a temperature sensor 700 are provided on the surface 310 of the probe 300 facing the delivery tube 100. When the probe 300 is fixedly connected to the delivery tube 100 (i.e., the consumable and non-consumable sections are connected), both the optical sensor 600 and the temperature sensor 700 abut the outer surface of the delivery tube 100. The optical sensor 600 measures the hematocrit (Hct), hemoglobin (Hb), and SO2 (oxygen saturation) of the blood within the delivery tube 100, while the temperature sensor 700 measures the temperature within the delivery tube 100. The outer surfaces of the optical sensor 600 and the temperature sensor 700 are light-transmitting windows, which can be made of glass. The optical sensor 600 contains an optical chip, which can be a multi-wavelength, integrated optical sensor module. The integration of the optical sensor 600 makes it compact and more suitable for miniaturization. The temperature sensor can be an infrared temperature sensor. As can be seen from the above, by setting up the pressure sensing device 400, the optical sensor 600 and the temperature sensor 700, the measurement of blood oxygen, temperature, pressure and other indicators can be completed without adding additional measurement pipelines. In addition, please refer to Figure 2 When the fixing device and the delivery tube are matched, an area 800 is formed. The area 800 is a plane and is used to cooperate with the optical sensor 600 and the temperature sensor 700. It should be noted that the area 800 is also part of the outer surface of the delivery tube 100.

[0032] Further, if Figure 5 As shown, in one embodiment, the pressure sensing area 330 of the probe 300 is formed on the outer surface of the probe 300 by cold pressing, and the pressure sensing area 330 of the probe 300 is glued to the outer surface of the probe to ensure waterproofness.

[0033] As can be seen from the above, the probe end of the probe 300 has a groove that matches the outer contour of the protective member 500, and the pressure sensing area 330 is located at the bottom of the groove. Figure 5 Probe 300 has a groove 340 and a positioning groove 350. These grooves match the outer contour of the protective member 500, thereby locating the probe during installation within the delivery tube. Furthermore, positioning groove 350 mates with positioning member 120, also providing a positioning function and facilitating installation. Grooves 340 and positioning grooves 350 are located at opposite ends of probe 300, ensuring more accurate positioning and facilitating installation.

[0034] In one embodiment, the outer shell of the probe 300 includes two half shells, which are connected by bolts. A bolt hole 360 ​​is opened on one of the half shells. After the bolts are fixed, the bolt hole 360 ​​is sealed with glue to prevent external liquid from entering the cleaning blind spot of the probe.

[0035] The above-mentioned probe system includes a delivery tube, a pressure sensing device, a fixing device and a probe. The pressure sensing device is provided on the delivery tube. The pressure sensing area of ​​the probe is connected to the pressure sensing device. The pressure sensor device is used to measure the blood pressure in the delivery tube. The pressure can be directly transmitted to the probe, thereby eliminating the need to connect other monitoring equipment or pressure gauges, avoiding additional risks such as perfusion leakage; the fixing device includes a fixing portion having an opening and a clamping portion connected to the fixing portion. The clamping portion extends outward from the edge of the opening of the fixing portion and is elastic. The delivery tube is passed through the fixing portion. The delivery tube and the fixing device are detachably connected. The probe and the clamping portion are detachably connected. Therefore, when the probe and the delivery tube are fixedly connected, that is, when the fixing device connects the delivery tube and the probe, the delivery tube and the fixing device are detachably connected. At the same time, the probe and the clamping portion are detachably connected. When the probe needs to be disassembled, the clamping portion can be stretched open due to its elasticity, so that the clamping portion is separated from the probe, facilitating cleaning of the probe. The connection between the probe and the delivery tube has no movable parts such as buttons or flip covers, further facilitating cleaning.

[0036] It should be noted that, in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0037] It should also be noted that the above description is merely a description of preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes or modifications made by persons skilled in the art based on the above disclosure are within the scope of protection of the present invention. Obviously, various modifications and variations may be made by persons skilled in the art without departing from the spirit and scope of the present invention. Thus, provided such modifications and variations fall within the scope of the present invention and its equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A probe system, characterized in that: It includes a delivery tube, a pressure sensing device, a fixing device and a probe, wherein the pressure sensing device is arranged on the delivery tube and is used to measure the blood pressure in the delivery tube; the fixing device includes a fixing portion with an opening and a clamping portion connected to the fixing portion, the clamping portion extends outward from the edge of the opening of the fixing portion, and the clamping portion is elastic. The delivery tube is passed through the fixing portion, and the delivery tube is detachably connected to the fixing device; the probe is detachably connected to the clamping portion, and when the probe is fixedly connected to the delivery tube, the pressure sensing area of ​​the probe abuts against the pressure sensing device.

2. The probe system according to claim 1, characterized in that A through hole is provided on the side wall of the delivery pipe, and a first protrusion adapted to the through hole is provided on the pressure sensing device; and / or, the pressure sensing device includes a pressure sensor, a printed circuit board provided on the pressure sensor, and pins provided on the printed circuit board.

3. The probe system according to claim 2, characterized in that The first protrusion is bonded to the delivery tube; and / or, the probe system further includes a protective member, which covers the pressure sensing device, one end of the protective member is detachably connected to the outer surface of the delivery tube, and the other end of the protective member is detachably connected to the probe.

4. The probe system according to claim 3, characterized in that The end of the protective member close to the delivery pipe is provided with a second protrusion, and the side wall of the delivery pipe is provided with a slot adapted to the second protrusion.

5. The probe system according to claim 3, characterized in that A third protrusion is provided on the side wall of the delivery pipe. The third protrusion has a first groove. The pressure sensing device is provided in the first groove.

6. The probe system according to claim 1, characterized in that A positioning piece is provided on the side wall of the delivery pipe, and the positioning piece is spaced apart from the pressure sensing device; the fixing device further comprises an end cover, the end cover is sleeved on the delivery pipe, and the end cover is detachably connected to the positioning piece.

7. The probe system according to claim 6, characterized in that The delivery pipe includes a body and a joint, the body and the joint are coaxially arranged, and the body is connected to the joint; the end cover and the joint are integrally formed or the end cover and the joint are detachably abutted.

8. The probe system according to claim 1, characterized in that A fourth protrusion is provided on the clamping portion, and a second groove adapted to the fourth protrusion is provided on the surface of the probe facing the conveying pipe; or a fifth protrusion is provided on the surface of the probe facing the conveying pipe, and a third groove adapted to the fifth protrusion is provided on the surface of the clamping portion.

9. The probe system according to claim 1, characterized in that An optical sensor and a temperature sensor are provided on the surface of the probe facing the delivery pipe. When the probe is fixedly connected to the delivery pipe, the optical sensor and the temperature sensor abut against the outer surface of the delivery pipe.

10. The probe system according to claim 1, wherein: The pressure sensing area of ​​the probe is formed on the outer surface of the probe by cold pressing, and the pressure sensing area of ​​the probe is glued to the outer surface of the probe.

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