Invasive pressure testing device

Abstract

The utility model is suitable for the technical field of invasive blood pressure simulation, and provides an invasive pressure testing device. The invasive pressure testing device comprises a support, an injector and a reciprocating mechanism. A syringe of the injector is detachably fixed on the bracket; the reciprocating mechanism is mounted on the bracket and is used for enabling a push rod of the syringe to do reciprocating motion; the reciprocating mechanism comprises a linear guide rail and a first clamping plate, the linear guide rail is fixed to the support, the first clamping plate is installed on a sliding block of the linear guide rail, and a push rod of the injector is fixedly connected with the first clamping plate. According to the application, repeated testing of the invasive blood pressure monitoring module is facilitated, so that the precision of the invasive blood pressure monitoring module is ensured.

Description

Technical Field

[0001] This application relates to an invasive pressure testing device. Background Art

[0002] With the continuous progress of medical technology, the treatment methods for refractory hypertension have become increasingly rich and precise. In recent years, renal denervation surgery, as an innovative interventional treatment method, has gradually become a research hotspot and a key direction for clinical application. In renal denervation surgery, the core step is to precisely ablate the sympathetic nerve fibers around the renal artery through energy forms such as ultrasound and radiofrequency, so as to reduce or block the excessive regulation of these nerves on renal function and systemic blood pressure, thereby achieving the purpose of reducing blood pressure. During the process of ablating the renal artery sympathetic nerve with energy such as ultrasound or radiofrequency, it is necessary to constantly monitor the change of arterial blood pressure to judge the impact of ablation at this site on the hypertension value.

[0003] When stimulating the nerves around the renal artery with ultrasound or radiofrequency energy, the change of the patient's invasive blood pressure is an important basis for judging whether this site is a strong response point or a weak response point. Therefore, in the renal denervation ablation device, the invasive blood pressure monitoring module is one of its important components; in the production of the renal denervation ablation device, it is necessary to detect the invasive blood pressure monitoring module, and currently, manual pushing of a syringe is mostly used for simulation, but it is not conducive to repeated testing of the invasive blood pressure monitoring module. Utility Model Content

[0004] The purpose of the embodiments of this application is to provide an invasive pressure testing device, aiming to solve the technical problem in the related art that manual pushing of a syringe for simulation is not conducive to repeated testing of the invasive blood pressure monitoring module.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] This application provides an invasive pressure testing device, which includes: a bracket, a syringe, and a reciprocating mechanism;

[0007] The syringe barrel of the syringe is detachably fixed on the bracket;

[0008] The reciprocating mechanism is installed on the bracket, and the reciprocating mechanism is used to make the push rod of the syringe barrel move reciprocally;

[0009] Among them, the reciprocating mechanism includes a linear guide rail and a first clamping plate. The linear guide rail is fixed on the bracket, the first clamping plate is installed on the slider of the linear guide rail, and the push rod of the syringe is fixedly connected to the first clamping plate.

[0010] In a possible design, the reciprocating mechanism further includes a motor, an eccentric wheel, and a tension spring. The output shaft of the motor is fixedly connected to the eccentric wheel. The eccentric wheel abuts against the first clamping plate. One end of the tension spring is connected to the first clamping plate, and the other end of the tension spring is connected to the bracket.

[0011] In a possible design, the bracket includes a first vertical plate and a second vertical plate. The first vertical plate is fixedly connected to the second vertical plate, and the plate surface of the first vertical plate is perpendicular to the plate surface of the second vertical plate.

[0012] The slide rail of the linear guide is fixed on the first vertical plate, and the syringe barrel is fixed on the second vertical plate.

[0013] In a possible design, the invasive pressure testing device further includes a pressing plate structure. The pressing plate structure includes a fixed seat and a second clamping plate. The fixed seat is detachably and fixedly connected to the second vertical plate, and the second clamping plate is detachably and fixedly connected to the fixed seat.

[0014] The fixed seat has a first groove, and the second clamping plate has a second groove. The first groove and the second groove are joined together to form a fixing groove. The syringe barrel is installed in the fixing groove.

[0015] In a possible design, a strip-shaped through hole is provided on the fixed seat. The length direction of the strip-shaped through hole is parallel to the length direction of the syringe. A screw is installed in the strip-shaped through hole for fixing the fixed seat on the second vertical plate.

[0016] In a possible design, the bracket further includes a base, and the first vertical plate and the second vertical plate are respectively fixedly connected to the base.

[0017] In a possible design, the other end of the tension spring is connected to the base.

[0018] In a possible design, the first clamping plate includes a first connecting portion and a second connecting portion. The first connecting portion is connected to the second connecting portion. The first connecting portion is fixedly connected to the slider of the linear guide. The second connecting portion has a first card slot and a second card slot. The push handle of the syringe push rod is limited in the first card slot, and the rod body of the syringe push rod is limited in the second card slot.

[0019] In a possible design, the first clamping plate further includes a surrounding portion and a bottom plate. The surrounding portion is fixedly connected to the second connecting portion. A liquid containing groove is formed among the surrounding portion, the bottom plate and the second connecting portion.

[0020] In a possible design, the first clamping plate further includes a drain hose. The drain hose is connected to the bottom plate and is communicated with the liquid containing groove.

[0021] The beneficial effects of the device provided by the present application mainly lie in:

[0022] The invasive pressure testing device provided by the present application detachably mounts a syringe on a bracket, which facilitates the replacement of the syringe to meet the testing requirements. The reciprocating mechanism drives the push rod of the syringe to reciprocate, enabling the movement speed of the push rod of the syringe to meet the set requirements, thereby facilitating the repeated testing of the invasive blood pressure monitoring module and ensuring the accuracy of the invasive blood pressure monitoring module. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 is a schematic structural diagram of the invasive pressure testing device provided by the embodiment of the present application;

[0025] Figure 2 is Figure 1 a partial enlarged schematic diagram of part A in

[0026] Figure 3 is a front view of the invasive pressure testing device provided by the embodiment of the present application;

[0027] Figure 4 is a right view of the invasive pressure testing device provided by the embodiment of the present application;

[0028] Figure 5 is a schematic structural diagram of the fixed seat in the embodiment of the present application;

[0029] Figure 6 is a schematic structural diagram of the first clamping plate in the embodiment of the present application;

[0030] Figure 7 is a schematic structural diagram of another first clamping plate in the embodiment of the present application;

[0031] Figure 8 is Figure 7 a schematic structural diagram from another perspective of

[0032] Main Reference Numeral Descriptions:

[0033] 101. Bracket; 102. Syringe; 103. Reciprocating mechanism; 104. Barrel; 105. Linear guide; 106. Slide block; 107. Push rod; 108. First clamping plate; 109. Discharge port; 110. Motor; 111. Eccentric wheel; 112. Tension spring; 113. Output shaft; 114. Driver; 115. First vertical plate; 116. Second vertical plate; 117. Pressing plate structure; 118. Fixed seat; 119. Second clamping plate; 120. First groove; 121. Second groove; 122. Strip-shaped through hole; 123. Base; 124. Anti-slip pad; 125. First connecting part; 126. Second connecting part; 127. Limit groove; 128. Barrel handle; 129. First clamping groove; 130. Second clamping groove; 131. Push handle; 132. Rod body; 133. Enclosure part; 134. Bottom plate; 135. Liquid storage tank; 136. Drainage hose; 137. Slide rail. Detailed implementation manners

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0038] In order to illustrate the technical solutions described in the present application, the following will be described in detail with reference to specific accompanying drawings and embodiments.

[0039] Combined Figure 1 and Figure 2 As shown, the invasive pressure testing device provided in one or more embodiments of the present application includes: a bracket 101, a syringe 102, and a reciprocating mechanism 103; the syringe barrel 104 of the syringe 102 is detachably fixed to the bracket 101; the reciprocating mechanism 103 is installed on the bracket 101, and the reciprocating mechanism 103 is used to make the push rod 107 of the syringe barrel 104 reciprocate; wherein, the reciprocating mechanism 103 includes a linear guide rail 105 and a first clamping plate 108, the linear guide rail 105 is fixed to the bracket 101, the first clamping plate 108 is installed on the slider 106 of the linear guide rail 105, and the push rod 107 of the syringe 102 is fixedly connected to the first clamping plate 108.

[0040] The invasive pressure testing device provided in at least one embodiment of the present application detachably installs the syringe 102 on the bracket 101, and the first clamping plate 108 is fixedly connected to the push rod 107, which facilitates the maintenance and replacement of the syringe 102, and different-capacity syringes 102 can be replaced as needed to meet the test requirements; the setting of the linear guide rail 105 is beneficial to realizing that the push rod 107 of the syringe 102 can move linearly, so as to ensure that the push rod 107 can reciprocate in the syringe barrel 104, thereby ensuring the normal operation of the invasive pressure testing device. In the manual pushing of the syringe 102 in the related art, the pressure values of each blood pressure are inconsistent, resulting in poor consistency in manual simulation and being unfavorable for repeated tests; while the reciprocating mechanism 103 of the embodiment of the present application drives the push rod 107 of the syringe 102 to reciprocate, which can make the movement speed of the push rod 107 of the syringe 102 meet the set requirements, and can repeatedly simulate the set blood pressure value and heart rate value, thereby being beneficial to the repeated testing of the invasive blood pressure monitoring module, and then ensuring the accuracy of the invasive blood pressure monitoring module, so as to improve the inspection efficiency, realize mass production, and save time for production and detection.

[0041] See Figure 1 As shown, in some embodiments, the discharge port 109 of the syringe barrel 104 of the syringe 102 is arranged upward, which facilitates the reciprocating movement of the push rod 107. Exemplarily, the discharge port 109 is connected to the first interface of a three-way valve (not shown), the second interface of the three-way valve is connected to a standard invasive blood pressure measuring device, and the third interface of the three-way valve is connected to a renal sympathetic denervation ablation device. In this way, the standard invasive blood pressure measuring device serves as a reference standard, and the invasive blood pressure monitoring module in the renal sympathetic denervation ablation device serves as a test object, so as to realize the accuracy test of the invasive blood pressure monitoring module.

[0042] See Figure 3 and Figure 4As shown, in some embodiments, the reciprocating mechanism 103 further includes a motor 110, an eccentric wheel 111, and a tension spring 112. The output shaft 113 of the motor 110 is fixedly connected to the eccentric wheel 111. The eccentric wheel 111 abuts against the first clamping plate 108. One end of the tension spring 112 is connected to the first clamping plate 108, and the other end of the tension spring 112 is connected to the bracket 101. The motor 110 is used to drive the eccentric wheel 111 to rotate, and the tension spring 112 can ensure that the first clamping plate 108 is in contact with the circumferential surface of the eccentric wheel 111, so that the first clamping plate 108 can move up and down as the eccentric wheel 111 rotates. Since the push rod 107 is fixedly connected to the first clamping plate 108, the reciprocating motion of the push rod 107 is realized. Exemplarily, by adjusting the motor 110, the simulation adjustment of the periodic change of the pulse rate can be realized. Different rotation speeds of the motor 110 can simulate different heart rates, so as to simulate the blood pressure changes at different heart rates, achieving full coverage of blood pressure simulation, and the difference between diastolic blood pressure and systolic blood pressure can be adjusted at any time by adjusting the rotation speed of the motor 110.

[0043] The housing of the motor 110 is fixed to the bracket 101 by screws. The reciprocating mechanism 103 further includes a driver 114. The driver 114 is electrically connected to the motor 110 to control the motor 110, such as controlling the rotation direction of the motor 110. The driver 114 can be mounted on the bracket 101. The driver 114 can be connected in series with a speed control potentiometer (not shown), and the speed of the motor 110 is adjusted by using the speed control potentiometer. The motor 110 can be a DC motor and can be connected to a 24V DC power supply. It should be noted that the driver 114, the position adjustment potentiometer, and the motor 110 can be connected in series in sequence.

[0044] See Figure 2 and Figure 3 As shown, in some embodiments, the bracket 101 includes a first vertical plate 115 and a second vertical plate 116. The first vertical plate 115 is fixedly connected to the second vertical plate 116, and the plate surface of the first vertical plate 115 is perpendicular to the plate surface of the second vertical plate 116. The slide rail 137 of the linear guide rail 105 is fixed to the first vertical plate 115, and the syringe barrel 104 of the syringe 102 is fixed to the second vertical plate 116. The first vertical plate 115 and the second vertical plate 116 are used to facilitate the installation of the syringe barrel 104 and the linear guide rail 105. Exemplarily, the first vertical plate 115 and the second vertical plate 116 can be an integral structure or can be fixedly connected by screws. The material of the first vertical plate 115 can be stainless steel or acrylic plate; the material of the first vertical plate 115 can be stainless steel or acrylic plate. The slide rail 137 of the linear guide rail 105 is fixed to the first vertical plate 115 by screws, which is convenient for assembly.

[0045] See Figure 3 and Figure 4As shown, in some embodiments, the invasive pressure testing device further includes a pressing plate structure 117. The pressing plate structure 117 includes a fixed seat 118 and a second clamping plate 119. The fixed seat 118 is detachably and fixedly connected to the second vertical plate 116, and the second clamping plate 119 is detachably and fixedly connected to the fixed seat 118. The fixed seat 118 has a first groove 120, and the second clamping plate 119 has a second groove 121. The first groove 120 and the second groove 121 are combined to form a fixing groove. The syringe barrel 104 of the syringe 102 is installed in the fixing groove. This facilitates the disassembly and replacement of the syringe 102. Exemplarily, a limiting groove 127 is further provided on the fixed seat 118, and the barrel handle 128 on the syringe barrel 104 is inserted into the limiting groove 127, so as to ensure that the syringe barrel 104 does not move along its own axial direction, thereby ensuring the stability of the syringe barrel 104 on the pressing plate structure 117. Both the first groove 120 and the second groove 121 can be arc-shaped grooves, so as to be adapted to the outer peripheral surface of the syringe barrel 104. The material of the second clamping plate 119 can be a metal sheet or a plastic sheet, so that the second clamping plate 119 can be deformed to clamp and install the syringe barrel 104.

[0046] See Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, a strip-shaped through hole 122 is provided on the fixed seat 118. The length direction of the strip-shaped through hole 122 is parallel to the length direction of the syringe 102. A screw (not shown) is installed in the strip-shaped through hole 122 for fixing the fixed seat 118 on the second vertical plate 116, so as to adjust the position of the syringe barrel 104 on the bracket 101, so as to adjust the length of the part of the push rod 107 of the syringe 102 extending out of the syringe barrel 104, and thus ensure the smoothness of the reciprocating movement of the push rod 107 in the syringe barrel 104. Exemplarily, the number of strip-shaped through holes 122 on the fixed seat 118 is four, and two strip-shaped through holes 122 are respectively provided on the two opposite long sides of the fixed seat 118, so as to ensure the stability of the installation of the fixed seat 118 on the second vertical plate 116 and ensure that the fixed seat 118 can be adjusted in position in the height direction of the second vertical plate 116.

[0047] See Figure 1As shown, in some embodiments, the bracket 101 further includes a base 123. The first vertical plate 115 and the second vertical plate 116 are respectively fixedly connected to the base 123, and the base 123 provides support for the first vertical plate 115 and the second vertical plate 116. Exemplarily, the first vertical plate 115 and the second vertical plate 116 may be an integral structure with the base 123, or the first vertical plate 115 and the second vertical plate 116 are respectively fixedly connected to the base 123 by screws. The material of the base 123 may be metal or acrylic plate. The first vertical plate 115 and the second vertical plate 116 are located on one surface of the base 123, and a plurality of anti-slip pads 124 are installed on the other opposite surface of the base 123, which can ensure that the invasive pressure testing device is not likely to slip at the placement position. The material of the anti-slip pads 124 may be silicone or rubber; the number of the plurality of anti-slip pads 124 may be four, the other opposite surface of the base 123 may be rectangular, and the four anti-slip pads 124 are located at the four corners of the other opposite surface of the base 123.

[0048] See Figure 1 As shown, in some embodiments, the other end of the tension spring 112 is connected to the base 123, so that the tension spring 112 can apply a force to the first clamping plate 108, and the eccentric wheel 111 is always in contact with the first clamping plate 108.

[0049] See Figure 6 As shown, in some embodiments, the first clamping plate 108 includes a first connecting portion 125 and a second connecting portion 126. The first connecting portion 125 is connected to the second connecting portion 126. The first connecting portion 125 is fixedly connected to the slider 106 of the linear guide 105. The second connecting portion 126 has a first card slot 129 and a second card slot 130. The push handle 131 of the push rod 107 of the syringe 102 is limited in the first card slot 129, and the rod body 132 of the push rod 107 of the syringe 102 is limited in the second card slot 130; this can ensure the stability of the connection between the push rod 107 and the first clamping plate 108. Exemplarily, the first card slot 129 may have an interference fit with the push handle 131, and the rod body 132 of the push rod 107 may have an interference fit with the second card slot 130, which can ensure the stability of the connection between the push rod 107 and the first clamping plate 108.

[0050] See Figure 7 and Figure 8As shown, in some other embodiments, the first clamping plate 108 further includes a surrounding portion 133 and a bottom plate 134. The surrounding portion 133 is fixedly connected to the second connecting portion 126. A liquid storage groove 135 is formed among the surrounding portion 133, the bottom plate 134, and the second connecting portion 126. In this way, when the syringe 102 is used for a long time, the liquid leaking from between the piston of the push rod 107 and the syringe barrel 104 can be collected in the liquid storage groove 135. Exemplarily, the surrounding portion 133 surrounds the circumferential surface of the second connecting portion 126, and there is a gap between the surrounding portion 133 and the circumferential surface of the second connecting portion 126, and this gap is a part of the liquid storage groove 135. The bottom plate 134 and the lower surface of the second connecting portion 126 have a spacing in the height direction of the first vertical plate 115, so that the remaining part of the liquid storage groove 135 is formed between the bottom plate 134 and the lower surface of the second connecting portion 126; the bottom plate 134 is fixedly connected to the surrounding portion 133.

[0051] See Figure 7 and Figure 8 As shown, in some other embodiments, the first clamping plate 108 further includes a drain hose 136. The drain hose 136 is connected to the bottom plate 134 and is in communication with the liquid storage groove 135. In this way, the liquid collected in the liquid storage groove 135 can be drained to a designated position by using the drain hose 136.

[0052] The working principle of the invasive pressure testing device provided by the embodiments of the present application is as follows:

[0053] Liquid is loaded into the syringe 102. In this way, liquid pressure is adopted in the syringe 102, and the error caused by air pressure can be eliminated. Then, the discharge port 109 of the syringe barrel 104 is communicated with the invasive blood pressure monitoring module to be tested through a pipeline. Among them, the invasive blood pressure monitoring module includes an invasive blood pressure sensor. After the invasive pressure testing device is powered on, the rotation speed of the motor 110 is adjusted by using a speed regulating potentiometer, and the driver 114 is connected to the motor 110 to drive the motor 110 to rotate. The motor 110 drives the eccentric wheel 111 to rotate, driving the push rod 107 of the syringe 102 to push outwards, and the push rod 107 of the syringe 102 moves to the highest point; as the eccentric wheel 111 rotates, the tension spring 112 can pull the push rod 107 of the syringe 102 back to the initial position, realizing a reciprocating motion in one cycle. In this way, the push rod 107 of the syringe 102 moves up and down to realize the pushing out or backflow of the liquid in the syringe barrel 104 of the syringe 102, thereby simulating the contraction and relaxation movements of the heart ventricle, generating periodic changes in blood pressure, and then simulating the diastolic blood pressure and systolic blood pressure. In addition, by adjusting the rotation speed of the motor 110, the rotation speed of the eccentric wheel is adjusted to simulate and adjust the heart rate. The discharge port 109 of the syringe barrel 104 is communicated with the invasive blood pressure monitoring module through a pipeline to realize the test of the invasive blood pressure monitoring module.

Claims

1. An invasive pressure testing device, characterized in that, Comprising: A bracket; A syringe, the syringe barrel of which is detachably fixed to the bracket; And A reciprocating mechanism, which is installed on the bracket and is used to make the push rod of the syringe barrel move reciprocally; Wherein, the reciprocating mechanism includes a linear guide rail and a first clamping plate. The linear guide rail is fixed to the bracket, the first clamping plate is installed on the slider of the linear guide rail, and the push rod of the syringe is fixedly connected to the first clamping plate.

2. The invasive pressure testing device according to claim 1, wherein The reciprocating mechanism further includes a motor, an eccentric wheel and a tension spring. The output shaft of the motor is fixedly connected to the eccentric wheel, the eccentric wheel abuts against the first clamping plate, one end of the tension spring is connected to the first clamping plate, and the other end of the tension spring is connected to the bracket.

3. The invasive pressure testing device according to claim 2, characterized in that, The bracket includes a first vertical plate and a second vertical plate. The first vertical plate is fixedly connected to the second vertical plate, and the plate surface of the first vertical plate is perpendicular to the plate surface of the second vertical plate; The slide rail of the linear guide rail is fixed to the first vertical plate, and the syringe barrel of the syringe is fixed to the second vertical plate.

4. The invasive pressure testing device according to claim 3, characterized in that, It further includes a pressing plate structure, which includes a fixed seat and a second clamping plate. The fixed seat is detachably and fixedly connected to the second vertical plate, and the second clamping plate is detachably and fixedly connected to the fixed seat; The fixed seat has a first groove, and the second clamping plate has a second groove; the first groove and the second groove are combined to form a fixing groove; the syringe barrel of the syringe is installed in the fixing groove.

5. The invasive pressure testing device according to claim 4, wherein, A strip-shaped through hole is provided on the fixed seat, and the length direction of the strip-shaped through hole is parallel to the length direction of the syringe; a screw is installed in the strip-shaped through hole for fixing the fixed seat to the second vertical plate.

6. The invasive pressure testing device according to any one of claims 3-5, characterized in that, The bracket further includes a base, and the first vertical plate and the second vertical plate are respectively fixedly connected to the base.

7. The invasive pressure testing device according to claim 6, wherein The other end of the tension spring is connected to the base.

8. The invasive pressure testing device according to claim 7, wherein, The first clamping plate includes a first connecting portion and a second connecting portion. The first connecting portion is connected to the second connecting portion. The first connecting portion is fixedly connected to the slider of the linear guide rail. The second connecting portion has a first clamping groove and a second clamping groove. The push handle of the push rod of the syringe is limited in the first clamping groove, and the rod body of the push rod of the syringe is limited in the second clamping groove.

9. The invasive pressure testing device according to claim 8, wherein, The first clamping plate further includes a surrounding portion and a bottom plate. The surrounding portion is fixedly connected to the second connecting portion. A liquid containing groove is formed among the surrounding portion, the bottom plate and the second connecting portion.

10. The invasive pressure testing device according to claim 9, characterized in that, The first clamping plate further includes a liquid discharge hose, which is connected to the bottom plate and is communicated with the liquid containing groove.

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