CN210784316U - Intravascular pressure measuring catheter - Google Patents
Intravascular pressure measuring catheter Download PDFInfo
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- CN210784316U CN210784316U CN201921251151.9U CN201921251151U CN210784316U CN 210784316 U CN210784316 U CN 210784316U CN 201921251151 U CN201921251151 U CN 201921251151U CN 210784316 U CN210784316 U CN 210784316U
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Abstract
The utility model provides an intravascular pressure measuring catheter, include: a distal cannula having a guidewire lumen slidably receiving a separate medical guidewire; a proximal portion coupled with the distal cannula; a pressure sensor disposed within the lumen of the proximal portion proximal to the guidewire lumen and separating the lumen of the proximal portion into a measurement lumen in communication with the guidewire lumen of the distal cannula, the pressure sensor for measuring blood pressure of blood flowing into the measurement lumen and generating a blood pressure signal, and the proximal portion further comprising a signal pathway for communicating the blood pressure signal from the pressure sensor. The utility model provides an intravascular pressure survey pipe can reduce distal end sheathed tube thickness, avoids being formed with the arch, and from this, the distal end sleeve pipe can pass more constrictive pathological change, widens the range of application, has still increased the propelling movement nature of pressure pipe in the blood vessel.
Description
Technical Field
The utility model relates to a catheter for measuring pressure in blood vessels.
Background
The Fractional Flow Reserve (FFR) of coronary artery refers to the ratio of the maximum blood Flow obtained from the myocardial region supplied by the blood vessel to the maximum blood Flow obtained from the same region under the theoretical normal condition under the condition that the coronary artery has a stenosis, and now becomes an innovative functional evaluation index, and has important guiding significance for the treatment strategy of coronary heart disease. In medicine, FFR is widely used to accurately diagnose coronary heart disease functional myocardial ischemia, and help doctors determine whether there is a stenosis and whether a cardiac stent implantation Procedure (PCI) is required. Meanwhile, the method can be used for evaluating the curative effect after the stent is implanted, can accurately reflect the functional severity of the pathological stenosis through the FFR, helps doctors objectively select the indication of interventional therapy, guides the optimal implantation of the stent and judges the treatment effect and the long-term curative effect. For example, when the FFR is less than 0.7-0.8, the coronary critical lesion should be considered for the stent implantation or coronary bypass surgery. Therefore, the judgment of the FFR can help a doctor to make an accurate judgment well, and the over-treatment caused by the misjudgment of the doctor is avoided.
Currently, pressure sensing catheters having a Rapid Exchange (RX) port are most commonly used, the distal portion of which has a lumen through which a guide wire is threaded, whereby the pressure sensing catheter can be moved along the guide wire to a predetermined position. Prior to coronary intervention, pressure sensing catheters were passed through the distal and proximal (right) sides of the stenosis, recording distal and proximal blood pressure, respectively. This enables the FFR value of the stenosis to be calculated.
However, the placement of the pressure sensor often results in a raised portion in a portion of the pressure sensing catheter (where the pressure sensor is located), which may be difficult to traverse through some relatively severe stenotic portion as the pressure sensing catheter is moved along the guidewire within the vessel, and the pressure at the stenosis may not be measured. Moreover, in the process that the pressure sensing catheter passes through the stenosis, the pressure sensor may contact with the stenosis, thereby affecting the measurement of the pressure sensor, failing to obtain an accurate FFR value, and failing to provide a precise judgment basis for a doctor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the above-mentioned technical problem who exists among the prior art, provide one kind and can carry out pressure measurement's intravascular pressure measurement pipe, intravascular pressure measurement method and intravascular pressure detection device to narrow blood vessel.
The utility model relates to an intravascular pressure measurement catheter, it includes: a distal cannula having a guidewire lumen slidably receiving a separate medical guidewire; a proximal portion coupled with the distal cannula; a pressure sensor disposed within a lumen of the proximal portion proximal to the guidewire lumen and separating the lumen of the proximal portion into a measurement lumen in communication with the guidewire lumen of the distal cannula, the pressure sensor for measuring blood pressure of blood flowing into the measurement lumen and generating a blood pressure signal, and the proximal portion further comprising a signal pathway for communicating the blood pressure signal from the pressure sensor.
The utility model provides an intravascular pressure survey pipe can reduce distal end sheathed tube thickness, avoids being formed with the arch, and from this, the distal end sleeve pipe can pass more constrictive pathological change, widens the range of application, has still increased the propelling movement nature of pressure survey pipe in the blood vessel. In addition, the pressure sensor is protected by the pipe wall of the proximal part, so that the influence on the pressure sensor caused by collision or bending of the pressure measurement catheter can be reduced, and the accuracy of blood pressure measurement can be improved.
Further, in the intravascular pressure measurement catheter of the present invention, optionally, the pressure sensor includes a sensing portion having a sensing region for sensing pressure and a lead portion for deriving the blood pressure signal generated by the sensing region. Therefore, the medical staff can read the measured blood pressure information through the external equipment after connecting the lead part to the external equipment through the signal path.
In addition, in the intravascular pressure measurement catheter of the present invention, optionally, a quick-exchange port for receiving the medical guidewire is provided in a side wall of the distal end cannula. In this case, the guide wire can guide the pressure measurement catheter through the quick-exchange port, so that the intravascular pressure measurement catheter can slide along the guide wire, thereby positioning the hose to a specific position in the patient and improving the operation efficiency of the interventional therapy.
Further, in the intravascular pressure measurement catheter of the present invention, optionally, at least the proximal end portion provided with the pressure sensor has a young's modulus larger than that of the distal end sleeve. In this case, the proximal end portion can better protect the pressure sensor, reducing the influence of the intravascular pressure measurement catheter on the pressure sensor due to the compression thereof caused by the deformation, whereby the measurement accuracy of the pressure sensing apparatus can be ensured.
Further, in the intravascular pressure measurement catheter of the present invention, the pressure sensor is optionally a thin film pressure sensor, and forms an angle with the length direction of the proximal end portion. Therefore, the film pressure sensor can measure the blood pressure at a proper angle.
In addition, in the intravascular pressure measurement catheter according to the present invention, the catheter may further include an intermediate portion connecting the distal end sleeve and the proximal end portion, and a young's modulus of the intermediate portion may be between a young's modulus of the distal end sleeve and a young's modulus of the proximal end portion. Therefore, the robustness of the intravascular pressure measuring catheter in the blood vessel can be increased, and the operation of a doctor is facilitated.
In addition, the intravascular pressure measurement catheter according to the present invention may further include an outer tube covering the distal end sheath and the proximal end portion. Thus, the influence of the collision between the intravascular pressure measurement catheter and the blood vessel wall on the stability of the measurement catheter can be reduced before the pressure measurement catheter enters the coronary artery.
Further, in the intravascular pressure measurement catheter of the present invention, optionally, the included angle is 45 ° to 135 °. This makes it possible to more accurately measure the blood pressure by making contact with the blood flow better.
Additionally, in the intravascular pressure measurement catheter of the present invention, optionally, the guidewire lumen slidably receives a medical guidewire having an outer diameter of about 0.2mm to 1 mm. Thereby, the types of receivable guide wires can be increased.
Further, in the intravascular pressure measurement catheter of the present invention, optionally, the distal sleeve is coaxial with the proximal portion. This can improve the stability of the intravascular pressure measurement catheter.
According to the utility model discloses an intravascular pressure measurement pipe can provide one kind and can carry out pressure measurement's intravascular pressure measurement pipe, intravascular pressure measurement method and intravascular pressure detection device to narrow blood vessel.
Drawings
Fig. 1 is a schematic cross-sectional view showing an intravascular pressure measurement catheter according to an embodiment of the present invention.
Fig. 2 is a schematic partial cross-sectional view of an intravascular pressure measurement catheter according to an embodiment of the present invention.
Fig. 3 is a schematic partial cross-sectional view of an intravascular pressure measurement catheter according to another embodiment of the present invention.
Fig. 4 is a schematic view showing a combination of a pressure sensor and a pedestal of an intravascular pressure measurement catheter according to an embodiment of the present invention.
Fig. 5 is a schematic view showing a lead part of a pressure sensor of an intravascular pressure measurement catheter according to an embodiment of the present invention.
Description of the symbols of the drawings:
1 … intravascular pressure measurement catheter, 2 … medical guidewire, 10 … distal cannula, 20 … proximal portion, 30 … pressure sensor, 40 … pedestal, 11 … annular cannula, 12 … outer tube, F … blood inflow direction, angle of theta … pressure sensor to horizontal plane, 31 … sensing portion, 32 … lead portion, 32a, 32b, 32c … pin.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same components are denoted by the same reference numerals, and redundant description thereof is omitted. The drawings are schematic and the ratio of the dimensions of the components and the shapes of the components may be different from the actual ones.
Fig. 1 is a schematic cross-sectional view showing an intravascular pressure measurement catheter 1 according to an embodiment of the present invention.
As shown in fig. 1, an intravascular pressure measurement catheter 1 (hereinafter, sometimes also simply referred to as "pressure measurement catheter 1", "blood pressure measurement catheter 1", "measurement catheter 1") includes a distal sleeve 10 having a guidewire lumen that slidably receives a separate medical guidewire 2 (hereinafter, sometimes also referred to as "guide guidewire 2", "guidewire 2"); a proximal portion 20 coupled with the distal cannula 10; a pressure sensor 30 disposed within the lumen of the proximal portion 20 proximal to the guidewire lumen and separating the lumen of the proximal portion 20 into a measurement lumen communicating with the guidewire lumen of the distal cannula 10, the pressure sensor 30 for measuring blood pressure of blood flowing into the measurement lumen and generating a blood pressure signal, and the proximal portion 20 further comprising a signal path for transmitting the blood pressure signal from the pressure sensor 30.
The intravascular pressure measurement catheter 1 provided by the embodiment can reduce the thickness of the distal sleeve 10, so that the distal sleeve 10 does not have a bulge, therefore, the distal sleeve 10 can penetrate narrower lesions, the application range is widened, the pushing performance of the pressure measurement catheter 1 in blood vessels is increased, the operation of a doctor is facilitated, and the operation time is saved. In addition, the pressure sensor 30 is protected by the wall of the proximal section, so that the influence on the pressure sensor caused by collision or bending of the pressure measurement catheter 1 can be reduced, and the accuracy of blood pressure measurement can be improved.
In the blood pressure measuring catheter 1 according to the present embodiment, the distal end sleeve 10 has a guide wire lumen. The guidewire lumen slidably receives a separate medical guidewire 2. Thus, by having the distal cannula 10 receive and slide along the medical guidewire 2, the distal cannula 10 and the pressure sensor 30 disposed on the proximal portion 20 can be delivered to a predetermined location within the patient's body (e.g., vein, artery). Thus, a blood pressure measurement can be taken at the predetermined location (e.g., lesion location) to obtain a reading of Fractional Flow Reserve (FFR) at that location, providing a reference for subsequent interventional procedures.
As described above, the value of Fractional Flow Reserve (FFR) (simply "FFR value") can be used to assess the extent to which a stenotic lesion obstructs blood flow through a blood vessel, providing a decision to a physician or the like whether to perform an interventional procedure. In general, to calculate the FFR value for a given stenosis, blood pressure readings need to be measured and collected separately on the distal side of the stenosis (e.g., downstream of the stenosis) and on the proximal side of the stenosis (e.g., upstream of the stenosis, near the aorta). The blood pressure gradient of the stenosis reflects an indication of the severity of the stenosis. The more severe the stenosis, the greater the pressure drop and the lower the FFR value.
In some examples, the guidewire lumen slidably receives a medical guidewire 2 having an outer diameter of about 0.2mm to 1 mm. This can increase the types of guide wires 2 that can be received.
In some examples, at the sidewall of the distal cannula 10, a quick-exchange port is provided for receiving the medical guidewire 2. In this case, the guide wire 2 can guide the pressure measurement catheter 1 through the rapid exchange port, whereby the intravascular pressure measurement catheter 1 can slide along the guide wire 2 to position the tube at a specific position in the patient's body, improving the efficiency of the interventional procedure.
In some examples, the young's modulus of at least the proximal portion 20 where the pressure sensor 30 is disposed is greater than the young's modulus of the distal cannula 10. In this case, the proximal end portion 20 can better protect the pressure sensor 30, reducing the pressure of the intravascular pressure measurement catheter 1 against the pressure sensor 30 due to deformation, and thus, the measurement accuracy of the pressure sensing apparatus can be ensured.
In some examples, further comprising an intermediate portion connecting the distal sleeve 10 and the proximal portion 20, the young's modulus of the intermediate portion being between the young's modulus of the distal sleeve 10 and the young's modulus of the proximal portion 20. Thereby, the robustness of the intravascular pressure measurement catheter 1 in the blood vessel can be increased, facilitating the operation by the physician.
In some examples, the material of construction of the proximal portion 20 is not particularly limited, and it is preferable to use a material with a higher hardness to ensure that the physician can advance the distal cannula 10 along the medical guidewire 2 into the patient's blood vessel and to locate the stenotic lesion through the proximal portion 20 during the interventional procedure.
In some examples, the proximal portion 20 may be stiffer and more rigid than the distal cannula 10 to enable better movement and advancement of the distal cannula 10. In some examples, proximal portion 20 may be constructed of medical grade stainless steel. In other examples, proximal portion 20 may also be constructed of other materials such as nitinol, nylon, plastic, Polyimide (PI), and the like.
In some examples, the pressure sensor 30 includes a sensing portion 31 and a lead portion 32, the sensing portion 31 having a sensing region that senses pressure, the lead portion 32 leading out blood pressure signals generated by the sensing region through pins (32a, 32b, 32 c). Therefore, the medical staff can read the measured blood pressure information through the external equipment after connecting the lead part to the external equipment through the signal path.
In some examples, the signal path may be coupled to a device external to the patient, such as a medical device, for example, a processor, display, computer, monitor, and the like.
In some examples, an outer tube 12 is also provided that covers the distal cannula 10 and the proximal portion 20. This makes it possible to reduce the influence of the collision between the intravascular pressure measurement catheter 1 and the blood vessel wall on the stability of the measurement catheter 1 before the pressure measurement catheter 1 enters the coronary artery.
In addition, in some examples, a ring-shaped sleeve 11 as a positioning mark may be further provided at the front end of the distal sleeve 10. The annular sleeve 11 is flexible and comprises a material that is opaque to X-rays. In other examples, the annular sleeve 11 may be flexible. Thus, when the blood pressure measurement catheter 1 moves in a blood vessel of a patient, damage to the blood vessel can be reduced.
In the present embodiment, as described above, during the interventional procedure, the distal sleeve 10 needs to be moved by manipulating the proximal end portion 20 (specifically, connecting the blood pressure measurement catheter 1). When the distal sleeve 10 is moved or adjusted within a blood vessel along the medical guidewire 2, the distal sleeve 10 may touch the blood vessel or a portion of the blood vessel having a large curvature near the distal sleeve 10. In this case, even when the distal end sleeve 10 slides along the medical guidewire 2 and touches a nearby blood vessel, the annular sleeve 11 provided at the most distal end of the distal end sleeve 10 has flexibility, and therefore, damage to the blood vessel can be reduced.
In the present embodiment, since the annular sleeve 11 includes a material opaque to X-rays, the annular sleeve 11 can form an opaque pattern when a human body is irradiated with X-rays. Through the opaque pattern, a doctor or the like can quickly find the corresponding positioning mark.
In some examples, the outer circumferential surface of the outer tube 12 is preferably tangent to the annular sleeve 11, thereby improving the operability of the distal sleeve 10 and the annular sleeve 11. The material of the outer tube 12 may be polyester, polyamide, nylon elastomer, polyurethane, Polyimide (PI), or the like.
In other examples, the outer tube 12 may be part of the molding process of the distal sleeve 10. For example, the outer tube 12 is tightly connected to the distal sleeve 10 by welding. In addition, the guidewire lumen of the distal cannula 10 may be formed by hot melt molding.
Fig. 2 is a schematic partial cross-sectional view showing an intravascular pressure measurement catheter 1 according to an embodiment of the present invention. Fig. 3 is a schematic partial cross-sectional view showing an intravascular pressure measurement catheter 1 according to another embodiment of the present invention. Fig. 4 is a schematic diagram showing the combination of the pressure sensor 30 and the pedestal 40 of the intravascular pressure measurement catheter 1 according to the embodiment of the present invention. Fig. 5 is a schematic diagram showing a lead portion 32 of a pressure sensor 30 of the intravascular pressure measurement catheter 1 according to the embodiment of the present invention.
In some examples, the pressure sensor 30 is disposed at the proximal end portion 20. Blood flows through the distal cannula 10 into the proximal portion 20 and into contact with the pressure sensor 30, and the pressure sensor 30 (and more particularly the measurement site of the pressure sensor 30) is capable of sensing and/or measuring blood pressure within a blood vessel of the patient and generating a blood pressure signal. The pressure sensor 30 is connected to a signal path, and a blood pressure signal generated by the pressure sensor 30 is transmitted to, for example, a processing device (not shown) outside the body via the signal path.
In some examples, the pressure sensor 30 may be a thin film pressure sensor and forms an angle θ with the length of the proximal portion 20. This enables the diaphragm-type pressure sensor 30 to measure the blood pressure at an appropriate angle.
In some examples, the included angle θ is 45 ° to 135 °. This makes it possible to more accurately measure the blood pressure by making contact with the blood flow better.
As shown in fig. 2, blood flows in the direction indicated by the arrow, and the pressure sensor 30 can measure the pressure of the blood flowing in the direction F. In other examples, pressure sensor 30 may form an angle θ with horizontal plane L1 in the direction of L2, and the angle θ may be between 45 ° and 135 °.
In other examples, as shown in fig. 3, the pressure sensor 30 may be positioned tangentially to the rapid exchange port. In this case, blood can flow out from the rapid exchange port along the pressure sensor 30, reducing the influence of the backflow of blood on the blood pressure measurement, thereby improving the measurement accuracy of the blood pressure.
Additionally, in some examples, the pressure sensor 30 may be a capacitive pressure sensor, a resistive pressure sensor, or the like. In addition, the pressure sensor 30 may be a MEMS pressure sensor. For example, the pressure sensor 30 measures a range of about-50 mm Hg to about +/-300 mmHg. Depending on the type of pressure sensor 30, the signal path may be a conductive medium such as an electrical lead. Further, in some embodiments, the signal path may also be a wireless communication link, an infrared communication link, or an ultrasonic communication link.
As shown in fig. 4 and 5, in some examples, the proximal end portion 20 may be further provided with a pedestal 40 for supporting the pressure sensor 30, the lead portion 32 of the pressure sensor 30 is combined with the pedestal 40, and the sensing portion 31 is used for measuring the blood flow pressure. In some examples, the pedestal 40 may be an alloy made of one or more of cobalt-chromium alloy, titanium alloy, aluminum alloy, or stainless steel, or a composite material of any of the above alloys. In addition, the stent may be made of hard engineering plastics such as ABS, PMMA, PET and the like, has enough bending strength, and can effectively inhibit the stress deformation of the stent.
In other examples, the abutment 40 may be secured within the lumen of the proximal portion 20 by welding, fitting, bonding, or the like.
In addition, in some examples, the pedestal 40 can be correspondingly configured according to the shape of the proximal portion 20, so that the pressure sensor 30 can measure the pressure of blood in the blood vessel without influence, and more accurately measure the blood pressure value, thereby providing accurate data results for the doctor.
In some examples, pressure sensor 30 may also be secured without using pedestal 40, and pressure sensor 30 may be disposed directly within the lumen of proximal portion 20. This allows the pressure sensor 30 to directly receive the pressure of blood in the blood vessel without being affected by the pedestal 40.
In other examples, gel may also be filled between the pressure sensor 30 and the proximal end portion 20. Specifically, for example, medical silicone gel may be filled, whereby it is possible to prevent liquid such as blood from penetrating into the lead portion 32, and thus it is possible to improve the reliability of the pressure sensor 30 and the signal path through which the blood pressure signal is transmitted. Furthermore, the silicone gel may also provide a cushioning effect for the pressure sensor 30.
Generally, during an interventional procedure, an operator, such as a doctor, first advances a medical guide wire 2 from a certain position (e.g., femoral artery) on a patient along a blood vessel to, for example, a coronary artery of the heart, then finds a position of the blood vessel where a lesion may occur by, for example, contrast with a contrast medium, and then advances a blood pressure measuring catheter 1 to a predetermined position along the medical guide wire 2. In this case, the blood pressure measuring catheter 1 is slid over the medical guide wire 2 by threading the distal sleeve 10 over the medical guide wire 2 (see fig.), so that the guide wire lumen slides over the medical guide wire 2, and the distal sleeve 10 (and the pressure sensor 30 provided on the distal sleeve 10) is moved by operating (e.g., pushing and/or pulling) the blood pressure measuring catheter 1 connected to the outside of the patient (or an operating device (not shown) connected to the blood pressure measuring catheter 1) until the pressure sensor 30 is at a predetermined position.
In some examples, the distal cannula 10 is coaxial with the proximal portion 20. This can improve the stability of the intravascular pressure measurement catheter 1.
In some examples, because the distal sleeve 10 is advanced to a predetermined location within the patient's blood vessel as it moves along the medical guidewire 2, there is no need to reposition the medical guidewire 2 in order to operate the blood pressure measuring catheter 1 according to embodiments of the present invention.
Specifically, for example, when the pressure sensor 30 on the blood pressure measuring catheter 1 is positioned at the distal end of the stenosis (for example, downstream of the stenosis), the blood pressure on the distal end side of the stenosis is first measured. Then, without adjusting the position of the medical guidewire 2, the pressure sensor 30 can be brought to the proximal side of the stenosis by moving (e.g., advancing and/or retracting) the distal sleeve 10, whereby blood pressure readings at the distal and proximal ends of the stenosis can be taken without moving the medical guidewire 2. Therefore, the operation complexity of the interventional therapy can be reduced and the operation time can be saved.
While the present invention has been described in detail in connection with the drawings and the examples, it is to be understood that the above description is not intended to limit the present invention in any way. The present invention may be modified and varied as necessary by those skilled in the art without departing from the true spirit and scope of the invention, and all such modifications and variations are intended to be included within the scope of the invention.
Claims (10)
1. An intravascular pressure measurement catheter, comprising:
a distal cannula having a guidewire lumen slidably receiving a separate medical guidewire;
a proximal portion coupled with the distal cannula;
a pressure sensor disposed within a lumen of the proximal portion proximal to the guidewire lumen and separating the lumen of the proximal portion into a measurement lumen in communication with the guidewire lumen of the distal cannula, the pressure sensor for measuring blood pressure of blood flowing into the measurement lumen and generating a blood pressure signal, and
the proximal portion further includes a signal path for transmitting the blood pressure signal from the pressure sensor.
2. The intravascular pressure measurement catheter of claim 1,
the pressure sensor includes a sensing portion having a sensing region that senses pressure and a lead portion that derives the blood pressure signal generated by the sensing region.
3. The intravascular pressure measurement catheter of claim 1,
a quick-change port for receiving the medical guidewire is disposed in a sidewall of the distal cannula.
4. The intravascular pressure measurement catheter of claim 1,
the young's modulus of the proximal portion at least provided with the pressure sensor is larger than the young's modulus of the distal cannula.
5. The intravascular pressure measurement catheter of claim 1,
the pressure sensor is a thin film pressure sensor and is angled with respect to the length of the proximal portion.
6. The intravascular pressure measurement catheter of claim 1,
further comprising an intermediate portion connecting the distal sleeve and the proximal portion, the intermediate portion having a Young's modulus between that of the distal sleeve and that of the proximal portion.
7. The intravascular pressure measurement catheter of claim 1,
an outer tube is also provided that covers the distal sleeve and the proximal portion.
8. The intravascular pressure measurement catheter according to claim 5, comprising:
the included angle is 45-135 degrees.
9. The intravascular pressure measurement catheter of claim 1, comprising:
the guidewire lumen slidably receives a medical guidewire having an outer diameter of about 0.2mm to 1 mm.
10. The intravascular pressure measurement catheter of claim 1, comprising:
the distal sleeve is coaxial with the proximal portion.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921251151.9U CN210784316U (en) | 2019-08-02 | 2019-08-02 | Intravascular pressure measuring catheter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921251151.9U CN210784316U (en) | 2019-08-02 | 2019-08-02 | Intravascular pressure measuring catheter |
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| CN210784316U true CN210784316U (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113876357A (en) * | 2020-11-04 | 2022-01-04 | 科特有限责任公司 | Imaging and pressure sensing device and probe with slidable sleeve |
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2019
- 2019-08-02 CN CN201921251151.9U patent/CN210784316U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113876357A (en) * | 2020-11-04 | 2022-01-04 | 科特有限责任公司 | Imaging and pressure sensing device and probe with slidable sleeve |
| CN113876357B (en) * | 2020-11-04 | 2024-01-26 | 科特有限责任公司 | Imaging and pressure sensing device and probe with slidable sleeve |
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Address after: 518000 area E, 3rd floor, building 3, Tingwei Industrial Park, No.6 Liufang Road, Xin'an street, Shenzhen City, Guangdong Province Patentee after: Shenzhen Beixin Life Technology Co.,Ltd. Address before: 518000 area E, 3rd floor, building 3, Tingwei Industrial Park, No.6 Liufang Road, Xin'an street, Shenzhen City, Guangdong Province Patentee before: INSIGHT LIFETECH Co.,Ltd. (SHENZHEN ) |
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