Measuring device for testing jaw pressing force

Abstract

The utility model provides a measuring device for testing jaw pressing force, comprising a circuit assembly, the circuit assembly at least comprises a conductive member, the conductive member is provided with a test position in a jaw and an idle position far away from the jaw, and when the conductive member is clamped by a clamp body assembly, circuits at two ends of the clamp body assembly are in a conduction state; the measuring and stretching assembly is connected with the clamp body assembly, and the measuring and stretching assembly is used for applying pulling force to the clamp body assembly so that circuits at the two ends of the clamp body assembly can be switched from the on state to the off state; when the circuits at the two ends of the clamp body assembly are tested to be switched from the on state to the off state, the tensile force applied by the stretching assembly is measured, and the pressing force applied when the conductive part is clamped by the clamp body assembly is determined. The technical problem that effective jaw pressing force data cannot be obtained in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, specifically, relate to a kind of measuring device of test jaw pressure. BACKGROUND

[0002] At present, a kind of method for measuring jaw pressure of high-frequency bipolar surgical instrument is to select thin film pressure sensor, but since the thin film pressure sensor available for sale is standard component, due to the defects such as thickness being thick and area being large, the side of jaw has multiple insulation points, and the insulation points are preferentially applied to the thin film pressure sensor during the closing process of two jaws, then the jaw surface is applied to the thin film pressure sensor, and the thin film pressure sensor is unevenly stressed, resulting in poor repeatability of the obtained pressure data, and effective jaw pressure data cannot be obtained. SUMMARY

[0003] The main purpose of the utility model is to provide a kind of measuring device of test jaw pressure, to solve the technical problem that effective jaw pressure data cannot be obtained in prior art.

[0004] In order to achieve the above purpose, according to one aspect of the utility model, a kind of measuring device of test jaw pressure is provided, comprising: circuit assembly, circuit assembly at least includes conducting part, conducting part has test position in jaw and idle position away from jaw, when conducting part is clamped by jaw body assembly, the both ends circuit of jaw body assembly is in conducting state;Measuring stretching assembly, measuring stretching assembly is connected with jaw body assembly, measuring stretching assembly is used to apply tension to jaw body assembly, so that the both ends circuit of jaw body assembly is switched from conducting state to open state;Wherein, by measuring the tension applied by measuring stretching assembly when the both ends circuit of jaw body assembly is switched from conducting state to open state, the pressure applied by jaw body assembly when conducting part is clamped is determined.

[0005] Further, the measuring assembly comprises: clamping assembly, the first end of clamping assembly is connected with jaw body assembly, and clamping assembly is used to apply tension to jaw body assembly;Tension sensor, the second end of clamping assembly is connected with tension sensor, and tension sensor is used to detect the tension applied by the first end of clamping assembly.

[0006] Further, the clamping assembly comprises: clamping body, the clamping body is two, the clamping body has clamping port end, jaw handle section and pivot joint between clamping port end and jaw handle section, wherein, the clamping port end of the two clamping bodies is connected with two jaws respectively, and the jaw handle section of the two clamping bodies is connected with the two connecting parts of tension sensor respectively;Connecting piece, the pivot joint of the two clamping bodies is pivotably connected by connecting piece;Fixing assembly, fixing assembly is used to control the switching between free state and locking state of the two clamping port ends.

[0007] Further, the end of the handle section is provided with a U-shaped mounting groove, and two ends of the U-shaped mounting groove are provided with fixing pins for connecting with the plier body assembly.

[0008] Further, the two connecting parts of the tension sensor include a first connecting part and a second connecting part, and the two clamping bodies include a first clamping body and a second clamping body.

[0009] Further, the measuring device further includes a fixing seat for relatively fixing the position of the measuring stretching assembly and the plier jaw.

[0010] Further, the circuit assembly further includes a multimeter electrically connected with the trigger plug corresponding to the plier jaw, and the multimeter is used for detecting the circuit state of the two-end circuit of the plier body assembly, and the circuit state at least includes a conduction state and a disconnection state.

[0011] Further, the measuring device further includes a display instrument electrically connected with the tension sensor, and the display instrument is used for displaying the compression force of the plier body assembly measured by the tension sensor.

[0012] Further, the positioning sleeve of the measuring stretching assembly and the plier body assembly are arranged on the fixing seat.

[0013] Further, the measuring device further includes a quick compression plier arranged on the fixing seat, and the quick compression plier is used for fixing the positioning sleeve on the fixing seat.

[0014] The technical scheme of the present application is applied, and the circuit assembly at least includes a conductive part, the conductive part has a test position in the plier jaw and an idle position away from the plier jaw, when the plier body assembly clamps the conductive part, the two-end circuit of the plier body assembly is in a conduction state; the measuring stretching assembly is connected with the plier body assembly, and the measuring stretching assembly is used for applying a tension to the plier body assembly, so that the two-end circuit of the plier body assembly is switched from the conduction state to a disconnection state; wherein, by testing the tension applied by the measuring stretching assembly when the two-end circuit of the plier body assembly is switched from the conduction state to the disconnection state, the compression force applied by the plier body assembly when clamping the conductive part is determined, so that the compression force between the two plier jaws under the open and closed states of the plier jaw can be accurately tested, and the compression force of the blood vessel tissue when the plier jaw clamps blood vessels of different thicknesses can also be simulated, the measuring method is simple and easy to use, and the technical problem that effective plier compression force data cannot be obtained in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the specification explain the present application. The use of the same reference numerals in different drawings indicates similar or identical components.

[0016] Figure 1 A structural schematic view of a first embodiment of the measuring device for testing the jaw clamping force is shown.

[0017] Figure 2 A structural schematic view of an embodiment of the measuring device for testing the jaw clamping force is shown.

[0018] Figure 3 A structural schematic view of a second embodiment of the measuring device for testing the jaw clamping force is shown.

[0019] Figure 4 A structural schematic view of a third embodiment of the measuring device for testing the jaw clamping force is shown.

[0020] Among them, the above-mentioned drawings include the following reference signs:

[0021] 1, multimeter;

[0022] 2, measuring tensile assembly;

[0023] 3, display instrument;

[0024] 4, fixed seat;

[0025] 5, high-frequency surgical instrument;

[0026] 6, conductive part;

[0027] 7, quick compression clamp;

[0028] 11, multimeter body;

[0029] 12, alligator clip;

[0030] 21, fastening head;

[0031] 22, first clamping body;

[0032] 23, tension sensor;

[0033] 231, first connecting part;

[0034] 232, second connecting part;

[0035] 24, second clamping body;

[0036] 25, connecting piece;

[0037] 26, first fixed pin;

[0038] 27, second fixed pin;

[0039] 51, trigger plug;

[0040] 52. a positioning sleeve;

[0041] 53. a trigger;

[0042] 54. a jaw;

[0043] 541. an insulating bump. DETAILED DESCRIPTION

[0044] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0045] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise, and it should be understood that the terms "comprise" and / or "include" when used herein specify the presence of stated features, steps, operations, devices, components and / or combinations thereof.

[0046] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged as appropriate, so that the embodiments of the present application described herein can be implemented, for example, in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in various different forms, and should not be interpreted as being limited only to the embodiments set forth herein. It should be understood that these embodiments are provided in order to make the present disclosure complete and complete, and to adequately convey the ideas of these exemplary embodiments to those of ordinary skill in the art. In the drawings, the thickness of layers and regions can be exaggerated for clarity, and the same reference numerals are used to denote the same elements, so that a description thereof will be omitted.

[0048] In surgical operation, high frequency bipolar surgical instrument is often used for closing and cutting off large blood vessels. Its principle is that when the jaws of the instrument slowly clamp the blood vessels, the compression force becomes larger and larger, and when the compression force reaches a maximum compression force, the end of the jaws releases high frequency current to burn the blood vessels. In the process of gradually evaporating water in the blood vessels, the collagen in the blood vessel tissue is also gradually fused, and finally a thin transparent band is formed. The compression force of the jaws on the blood vessels is an important parameter in the process of closing the blood vessels by the high frequency surgical instrument. If the compression force is too small, the blood vessel wall is not completely fused under the high frequency current, and the closing process is completed, which is easy to cause bleeding at the cutting surface and cause medical accidents. If the compression force is too large, the collagen in the blood vessel wall is broken before fusion, which causes the closing effect to be less than expected.

[0049] It is known that one method for measuring the compression force of the jaws is to select a thin film pressure sensor. However, since the commercially available thin film pressure sensor is a standard component, it has defects such as thick thickness and large area. In addition, there are multiple insulation points protruding on one side of the compression surface of the jaws. During the closing process of the two jaws, the insulation protrusions act on the thin film pressure sensor first, and then the compression surface of the jaws acts on the thin film pressure sensor. The thin film pressure sensor is unevenly stressed, resulting in poor repeatability of the obtained pressure data and inability to obtain effective compression force data of the jaws.

[0050] In order to solve the technical problem that effective compression force data of the jaws cannot be obtained in the prior art, the utility model provides a measuring device for testing the compression force of the jaws.

[0051] In combination Figures 1-4 As shown in the specific embodiments of the present application, a measuring device for testing the compression force of the jaws is provided, which comprises: a circuit assembly and a measurement stretching assembly 2, wherein:

[0052] The circuit assembly at least comprises a conductive part 6, which has a test position in the jaws 54 and an idle position away from the jaws 54. When the conductive part 6 is clamped by the jaw assembly, the two end circuits of the jaw assembly are in a conductive state.

[0053] In this embodiment, the conductive part 6 is cut from stainless steel sheets of different thickness specifications. The conductive part 6 can be selected from stainless steel plug gauges. The plug gauges of multiple thickness specifications can be used to test the compression force of the jaws 54 under different gaps. The jaw assembly of the high frequency surgical instrument 5 is opened and closed to form the jaws 54, and the size of the jaws 54 is determined by the opening and closing degree of the jaw assembly.

[0054] After the jaws 54 are tightly closed, there is a certain gap between the jaws 54 due to the blocking of the insulation protrusions 541. The conductive part 6 with the same thickness as the gap can obtain the compression force of the blood vessels by the jaw assembly of the high frequency surgical instrument 5 when completely closed. When the conductive parts 6 with increasing thickness are selected in turn, the compression force of the blood vessels by the jaws 54 when clamping blood vessels of different thicknesses can be obtained.

[0055] The measuring tensile assembly 2 is connected with the jaw assembly, and the measuring tensile assembly 2 is used to apply a pulling force to the jaw assembly to switch the two-end circuit of the jaw assembly from the conduction state to the open state; wherein the pulling force applied by the measuring tensile assembly 2 when the two-end circuit of the jaw assembly is switched from the conduction state to the open state is measured to determine the clamping pressure applied by the jaw assembly to the conductive part 6.

[0056] In the embodiment, the clamping pressure between the two jaws of the jaw assembly in the open and closed states can be accurately tested, and the clamping pressure of the jaw assembly on the blood vessel tissue when clamping blood vessels of different thicknesses can be simulated. The measurement method is simple and easy to use, and the technical problem that effective jaw clamping pressure data cannot be obtained in the prior art is solved.

[0057] In an embodiment of the present application, the measuring tensile assembly 2 comprises a clamping assembly and a tensile force sensor 23, wherein:

[0058] The first end of the clamping assembly is connected with the jaw assembly, and the clamping assembly is used to apply a pulling force to the jaw assembly; the tensile force sensor 23 is connected with the second end of the clamping assembly, and the tensile force sensor 23 is used to detect the pulling force applied by the first end of the clamping assembly.

[0059] In the embodiment, when the clamping assembly applies a pulling force to the jaw assembly, the tensile force sensor 23 is stressed, so that the pulling force value applied by the first end of the clamping assembly is detected, thereby making the detection more accurate.

[0060] In an embodiment of the present application, the clamping assembly comprises a clamping body, a connecting piece 25 and a fixing assembly, wherein:

[0061] The clamping body is two, and the clamping body has a clamping port end, a handle segment and a pivoting part between the clamping port end and the handle segment, wherein the clamping port ends of the two clamping bodies are respectively connected with the two jaws, and the handle segments of the two clamping bodies are respectively connected with the two connecting parts of the tensile force sensor 23; the connecting piece 25 is used to pivotably connect the pivoting parts of the two clamping bodies; and the fixing assembly is used to control the two clamping port ends to switch between a free state and a locked state.

[0062] In the embodiment, the fixing assembly is controlled to rotate the two clamping bodies about the axis of the connecting piece 25, so that the two clamping port ends can be switched between the free state and the locked state.

[0063] In an embodiment of the present application, the end of the handle segment is provided with a U-shaped mounting groove, and the two ends of the U-shaped mounting groove are provided with fixing pins used to connect with the jaw assembly.

[0064] In the embodiment, the two fixing pins can be used to fixedly connect the jaw assemblies of the jaws 54, so that the fixing assembly controls the jaw assemblies of the jaws 54 to open and close through the two clamping bodies.

[0065] In one embodiment of the present application, the two connecting parts of the tension sensor 23 include a first connecting part 231 and a second connecting part 232, and the two clamping bodies include a first clamping body 22 and a second clamping body 24. The jaw segment of the first clamping body 22 is provided with a through hole, the first connecting part 231 passes through the through hole and is connected with the fixing assembly, and the jaw segment of the second clamping body 24 is connected with the second connecting part 232.

[0066] In the present embodiment, the first connecting part 231 and the second connecting part 232 are both threaded rods, the fixing assembly is a fastening head 21, the first connecting part 231 passes through the through hole and is connected with the threaded hole of the fastening head 21, the jaw segment of the second clamping body 24 is threadedly connected with the second connecting part 232, the fixing pin includes a first fixing pin 26 and a second fixing pin 27, the first fixing pin 26 is installed at the end of the jaw segment of the first clamping body 22, and the second fixing pin 27 is installed at the end of the jaw segment of the second clamping body 24. In use, the first fixing pin 26 is used to fix one end of the jaw 54 on the first clamping body 22, and the second fixing pin 27 is used to fix the other end of the jaw 54 on the second clamping body 24.

[0067] In one embodiment of the present application, the measuring device further includes a fixing seat 4, which is used to relatively fix the positions of the measuring stretching assembly 2 and the jaw 54 of the high-frequency surgical instrument 5.

[0068] In the present embodiment, the fixing seat is processed from engineering plastic, which is low in cost and can be processed into other shapes for fixing other high-frequency surgical instruments of scissors type or gun type.

[0069] In one embodiment of the present application, the circuit assembly further includes a multimeter 1, which is electrically connected with the trigger plug 51 corresponding to the jaw 54. The multimeter 1 is used to detect the circuit state of the two ends of the jaw body assembly, which at least includes the on state and the off state.

[0070] In the present embodiment, the positive and negative poles of the multimeter body 11 are clamped on the positive and negative terminal of the trigger plug 51 of the high-frequency surgical instrument 5 through two alligator clips 12, so that the state of the jaw 54 of the high-frequency surgical instrument 5 when short-circuiting or being disconnected can be tested.

[0071] In one embodiment of the present application, the measuring device further includes a display instrument 3, which is electrically connected with the tension sensor 23. The display instrument 3 is used to display the compression force of the jaw body assembly measured by the tension sensor 23.

[0072] In the present embodiment, the compression force is displayed through the display instrument 3, so that the test is more visualized.

[0073] In one embodiment of the present application, the positioning sleeve 52 of the measuring stretching assembly 2 and the jaw body assembly are both installed on the fixing seat 4, so as to prevent the test data from deviating due to the shaking caused by the action of the two.

[0074] In one embodiment of the present application, the measuring device further comprises a quick pressing clamp 7, which is installed on the fixing seat 4 and used to fix the positioning sleeve 52 on the fixing seat 4.

[0075] In the present embodiment, the quick pressing clamp 7 is used to press the positioning sleeve 52, so as to ensure that the high-frequency surgical instrument 5 cannot shake left and right and back and forth.

[0076] Specifically, the process of testing the jaw pressing force by using the measuring device in the above embodiment is as follows:

[0077] Before testing, the fastening head 21 of the measuring stretching assembly 2 is counterclockwise rotated to loosen one end of the tension sensor 23, so as to slightly rotate the first clamping body 22 and the second clamping body 24; the high-frequency surgical instrument 5 is fixed on the fixing seat 4, the quick pressing clamp 7 is used to press the positioning sleeve 52, and the alligator clip 12 of the multimeter body 11 is respectively clamped on the positive and negative terminals of the trigger plug of the high-frequency surgical instrument 5.

[0078] When starting the test, the conductive part 6 is clamped in the jaw 54, the trigger 53 of the high-frequency surgical instrument 5 is closed, the short-circuit alarm sound of the multimeter 1 is heard, the fastening head 21 is clockwise rotated slowly, when the tension sensor 23 is stressed, the first fixed pin 26 and the second fixed pin 27 are respectively subjected to the upward and downward tension to continuously pull the two ends of the jaw 54, the display instrument 3 also starts to display the tension value, and the fastening head 21 is continuously rotated slowly, when the intermittent short-circuit alarm sound of the multimeter 1 is heard, it indicates that the gap between the two ends of the jaw 54 and the conductive part 6 begins to exist, which cannot meet the conduction, the upward and downward tension of the first fixed pin 26 and the second fixed pin 27 to the jaw 54 just offsets the pressing force between the two ends of the jaw 54, and the tension value displayed by the display instrument 3 can be recorded as the pressing force of the jaw 54.

[0079] For the sake of brevity, spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of below and above. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Well-known functions or constructions can not be described in detail for brevity.

[0080] In addition, it is to be noted that, in the description of the present application, "one embodiment", "another embodiment", "an embodiment", etc. refer to specific features, structures or characteristics described in connection with the embodiment, which are included in at least one embodiment described in the general description of the present application. The same expression appearing in several places in the description does not necessarily refer to the same embodiment. Further, when a specific feature, structure or characteristic is described in connection with any embodiment, it is claimed that the implementation of such feature, structure or characteristic in connection with other embodiments also falls within the scope of the present application.

[0081] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0082] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A measuring device for testing the clamping force of jaws, characterized in that, include: The circuit assembly includes at least a conductive element (6), the conductive element (6) having a test position located within the jaws (54) and an idle position away from the jaws (54), and when the clamp assembly clamps the conductive element (6), the circuits at both ends of the clamp assembly are in a conductive state. A tension measuring assembly (2) is connected to a clamp assembly. The tension measuring assembly (2) is used to apply tension to the clamp assembly so that the circuits at both ends of the clamp assembly switch from the on state to the off state. Specifically, by testing the tension applied by the measuring tension component (2) when the circuits at both ends of the clamping assembly switch from the on state to the off state, the clamping force applied by the clamping assembly when clamping the conductive element (6) is determined.

2. The measuring device for testing the clamping force of jaws according to claim 1, characterized in that, The measuring tension assembly (2) includes: A clamping assembly, the first end of which is connected to the clamping body assembly, the clamping assembly being used to apply a tensile force to the clamping body assembly; A tension sensor (23) is connected to the second end of the clamping assembly and is used to detect the tension applied to the first end of the clamping assembly.

3. The measuring device for testing the clamping force of jaws according to claim 2, characterized in that, The clamping assembly includes: The clamping body comprises two clamping bodies, each clamping body having a clamping end, a clamping handle section, and a pivotal connection between the clamping end and the clamping handle section. The clamping ends of the two clamping bodies are respectively connected to the two clamping bodies, and the clamping handle sections of the two clamping bodies are respectively connected to the two connecting parts of the tension sensor (23). A connector (25) is used to pivotally connect the pivot portions of the two clamping bodies; A fixing component is provided for controlling the two clamping ends to switch between a free state and a locked state.

4. The measuring device for testing the clamping force of jaws according to claim 3, characterized in that, The end of the pliers handle section is provided with a U-shaped mounting groove, and the two ends of the U-shaped mounting groove are provided with fixing pins for connecting with the pliers body assembly.

5. The measuring device for testing the clamping force of jaws according to claim 4, characterized in that, The tension sensor (23) has two connecting portions, including a first connecting portion (231) and a second connecting portion (232), and the two clamping bodies include: The first clamping body (22) has a through hole in the handle section, and the first connecting part (231) passes through the through hole and is connected to the fixing component. The second clamping body (24) has a handle section connected to the second connecting part (232).

6. The measuring device for testing the clamping force of jaws according to claim 5, characterized in that, The measuring device further includes: Fixing base (4) is used to fix the positions of the measuring tension assembly (2) and the jaws (54) relative to each other.

7. The measuring device for testing the clamping force of jaws according to claim 6, characterized in that, The circuit assembly also includes: Multimeter (1), the multimeter (1) is used to electrically connect to the trigger plug (51) corresponding to the jaws (54), the multimeter (1) is used to detect the circuit status of the two ends of the clamp body assembly, the circuit status includes at least the on state and the off state.

8. The measuring device for testing the clamping force of jaws according to claim 7, characterized in that, The measuring device further includes: The display (3) is electrically connected to the tension sensor (23) and is used to display the clamping force of the clamp assembly measured by the tension sensor (23).

9. A measuring device for testing the clamping force of jaws according to claim 8, characterized in that, The measuring tension assembly (2) and the positioning sleeve (52) of the clamp assembly are both mounted on the fixed base (4).

10. A measuring device for testing the clamping force of jaws according to claim 9, characterized in that, The measuring device further includes: Quick clamp (7) is mounted on the fixed base (4) and is used to fix the positioning sleeve (52) on the fixed base (4).

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