A probe module for an elastograph

Abstract

The utility model provides a kind of probe module for elastic diagram instrument, the structure of probe module is improved, can avoid probe and produce deflection and jitter due to the vibration of outside. Probe module for elastic diagram instrument includes probe piece and bearing assembly, the bearing assembly includes two bearings spaced apart along the axial direction, the outer ring of two bearings is used as fixed end, inner ring is used to be fixedly connected with probe piece;The center line of the bearing coincides with the central axis of the probe piece. By setting bearing assembly, probe piece is fixedly connected with the inner ring of bearing, reduce or avoid that probe piece occurs deflection and jitter due to the vibration of outside.

Description

Technical Field

[0001] This utility model relates to the field of elastography technology, specifically to a probe module for an elastography instrument. Background Technology

[0002] Thromboelastography, as an advanced medical device, accurately monitors the dynamic changes in thrombus viscoelasticity, providing a real-time and comprehensive view of the characteristics of thromboelastography. This technology not only helps obtain comprehensive information on coagulation and fibrinolysis functions but also allows for detailed evaluation of every process in the body's coagulation system, thereby ensuring the normal operation of the coagulation process.

[0003] Most thromboelasticity testing devices widely used in the market today employ a probe as their core component. The middle part of the probe is connected to an angular displacement sensor, while the lower end contacts the blood sample in the sample cup. However, when the device is subjected to external vibration, the probe is prone to wobbling and shaking due to the vibration. Utility Model Content

[0004] The purpose of this invention is to provide a probe module for an elastogram. By improving the structure of the probe module, it is possible to avoid the probe from swaying and shaking due to external vibrations.

[0005] To achieve the above objectives, this utility model provides a probe module for an elastogramr. The probe module includes a probe component and a bearing assembly. The bearing assembly includes two bearings spaced apart along the axial direction. The outer rings of the two bearings serve as fixed ends, and the inner rings are used to fix them to the probe component. The centerline of the bearings coincides with the central axis of the probe component. By setting the bearing assembly, the probe component is fixedly connected to the inner rings of the bearings, reducing or avoiding the probe component's swaying and shaking due to external vibrations.

[0006] Optionally, the probe module for the elastogram also includes a fixing component and a mounting base, wherein the fixing component is used to fix the outer ring of each bearing to the mounting base;

[0007] The mounting base has mounting channels for accommodating bearing assemblies, and the mounting channels are coaxially arranged with each bearing.

[0008] By setting a mounting base to fix the bearing assembly, the assembly of the probe module can be facilitated. In addition, by setting a mounting channel that is coaxial with the bearing, the coaxiality between the probe and the mounting base can be ensured.

[0009] Optionally, the fixing assembly also includes a spacer ring, which axially supports the outer rings of the two bearings. By providing axial support for the outer rings of the two bearings, rotation of the outer rings is prevented.

[0010] Optionally, the mounting channel has a lower end face at its bottom, and the mounting channel has an opening formed in the lower end face, which is coaxially arranged with the probe; axially, the outer ring of the bearing located on the lower side is axially pressed against the lower end face. By providing a lower end face at the bottom of the mounting channel, the outer rings of the two bearings can be axially supported.

[0011] Optionally, the mounting base and the lower end face are integrally formed, which simplifies the structural design of the probe.

[0012] Optionally, the probe includes a probe body, a portion of which is located within the opening; the probe body is provided with a radially outwardly protruding annular boss, which is located within the opening and spaced apart from the inner ring sidewall of the opening.

[0013] Optionally, the inner ring end face of the bearing located on the lower side is vertically pressed against the platform of the annular boss. This allows the annular boss to abut against the inner ring of the bearing in the axial direction, thereby forming a stop in the axial direction and preventing the probe from moving upward.

[0014] Optionally, the fixing assembly also includes a pressure ring, a portion of which is axially pressed against the upper end face of the mounting base and a portion of which is pressed against the outer ring end face of the bearing located on the upper side.

[0015] Optionally, a portion of the probe body extends through the pressure ring to the outside of the mounting channel;

[0016] The portion of the probe body located outside the mounting channel is also equipped with a shoulder retaining ring, which axially presses against the inner ring end face of the bearing located above. This allows for axial positioning of the probe and facilitates installation.

[0017] Optionally, it also includes a wire-twisting retainer and a fastener, the wire-twisting retainer having a first channel extending along the radial surface of the probe member;

[0018] It also includes a wire twisting assembly, which includes a wire twisting body and a fixing block fixed to one end of the wire twisting body. The fixing block can be inserted into the first channel, and fasteners are used to lock the fixing block at different positions in the first channel.

[0019] In this way, the length of the twisted wire body can be adjusted by locking the fixing block at different positions within the first channel.

[0020] Optionally, a second channel is also provided, which penetrates part of the wall of the first channel; the second channel is used to insert a fastener, which presses against the fixing block radially along the first channel. This method allows for quick locking and unlocking of the fixing block, facilitating operation.

[0021] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0023] Figure 1 This is a side sectional view of the structure along the first direction in the embodiment of this utility model, showing the probe module and sample cup assembly in a compatible state.

[0024] Figure 2 yes Figure 1 A side sectional view of the probe module along the second direction;

[0025] Figure 3 yes Figure 1 Perspective view of the probe module along the third direction;

[0026] Figure 4 This is a side sectional view of the fixing block and the twisted wire body;

[0027] Figure 5 This is a schematic diagram showing the probe module's adaptation status with the laser and image sensor, with a top view of the probe module.

[0028] Figure label:

[0029] 1-Bearing assembly; 1a-Bearing; 2-Fixing assembly; 21-Pressure ring; 22-Spacer ring; 3-Mounting base; 31-Mounting channel; 31a-Lower end face; 4-Probe component; 41-Probe body; 42-Annular boss; 43-Shoulder ring; 5-Twisted wire fixing base; 51-First channel; 52-Second channel; 53-Fastener; 54-Reflector; 6-Twisted wire assembly; 61-Twisted wire body; 62-Fixing block; 63-Internal through hole; 7-Sample cup assembly; 71-Cup lid; 72-Cup body; 8-Laser; 9-Image sensor; 100-Probe module. Detailed Implementation

[0030] This invention provides a probe module for an elastogram. By improving the structure of the probe module, it is possible to avoid the probe from swaying and shaking due to external vibrations.

[0031] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0033] Please refer to Figures 1 to 5 , Figure 1 This is a side sectional view of the structure along the first direction in the embodiment of this utility model, showing the probe module and sample cup assembly in a compatible state. Figure 2 yes Figure 1 A side sectional view of the probe module along the second direction; Figure 3 yes Figure 1 Perspective view of the probe module along the third direction; Figure 4 This is a side sectional view of the fixing block and the twisted wire body; Figure 5 This is a schematic diagram showing the probe module's adaptation status with the laser and image sensor, with a top view of the probe module.

[0034] The purpose of this utility model is to provide a probe module 100 for an elastogram. Please refer to [link / reference]. Figure 1 and Figure 2 The elasticity grapher uses a probe module 100, a probe element 4, and a bearing assembly 1. The bearing assembly 1 includes two bearings 1a spaced apart along the axial direction. The inner ring is used to fix the bearing element 4. The center line of the bearing 1a coincides with the central axis of the probe element 4.

[0035] The probe 4 can reciprocate within a set angle range around its central axis under the action of an external force. The bearing assembly 1 includes two bearings 1a, with the inner ring fixedly connected to the middle of the probe 4.

[0036] The bottom end of the probe 4 extends from the bottom end of the bearing assembly 1. The sample cup assembly 7 includes a cup lid 71 and a cup body 72 connected together. The bottom end of the probe is connected to the cup lid 71 and contacts the blood sample to be tested inside the cup body 72.

[0037] The top end of the probe 4 extends from the top end of the bearing assembly 1 and is fixed to the torsion wire fixing seat 5. The torsion wire fixing seat 5 is used to fix the torsion wire. Under the action of external force, the torsion wire drives the probe 4 to rotate around its central axis. During the rotation, the probe 4 will drive the cup cover 71 to rotate relative to the cup body 72, thereby completing the detection of the blood sample to be tested.

[0038] By setting bearing 1a, the probe 4 is fixedly connected to the inner ring of bearing 1a. Thus, the bearing assembly can fix the probe 4 in the axial direction, reducing or avoiding the probe 4 from swaying and shaking due to external vibration.

[0039] In some specific embodiments, please refer to [link / reference]. Figure 1 , Figure 2 The probe module 100 for the elasticity grapher also includes a fixing component 2 and a mounting base 3. The fixing component 2 is used to fix the outer ring of each bearing 1a to the mounting base 3.

[0040] Mounting base 3 has mounting channels 31 for accommodating bearing assembly 1, and mounting channels 31 are coaxially arranged with each bearing 1a. Mounting channels 31 extend axially, and the inner wall of mounting channels 31 fits precisely with the outer wall of the outer ring of bearing 1a to ensure the coaxiality of bearing 1a.

[0041] As an alternative, the fixing assembly 2 also includes a spacer ring 22, which is axially supported between the outer rings of the two bearings 1a. The fixing assembly 2 also includes a pressure ring 21, a portion of which is axially pressed against the upper end face of the mounting base 3, and a portion is pressed against the end face of the outer ring of the bearing 1a located on the upper side.

[0042] The probe component 4 includes a probe body 41, a portion of which passes through the pressure ring 21 to the outside of the mounting channel 31. The portion of the probe body 41 located outside the mounting channel 31 is also provided with a shoulder retaining ring 43, which axially presses against the inner ring end face of the bearing 1a located on the upper side. This allows for axial positioning of the probe component 4.

[0043] The mounting channel 31 has a mounting opening on the upper surface of the mounting base 3. During assembly, after one bearing 1a is installed into the mounting channel 31, the spacer ring 22 is inserted into the mounting channel 31. Then, another bearing 1a is installed into the mounting channel 31. In this way, the bearing 1a located on the upper side is pressed against by the shoulder retaining ring 43, and the bearing 1a can then be pressed against the bearing 1a located on the lower side by the spacer ring 22.

[0044] The middle part of the probe body 41 can pass through the spacer ring 22 and is radially spaced from the inner wall of the spacer ring 22. The radial dimension of the outer wall of the spacer ring 22 is adapted to the mounting channel 31, and the radial width between its outer wall and inner wall is adapted to the radial width of the outer ring of the bearing 1a.

[0045] In the above technical solution, in order to support the bearing 1a at the lower part of the mounting channel 31, a lower end face 31a is provided at the bottom of the mounting channel 31. The mounting channel 31 has an opening formed in the lower end face 31a, which allows the probe body 41 to pass through. The opening is coaxially arranged with the probe body. The opening is coaxially arranged with the mounting port.

[0046] In the axial direction, the outer ring of the lower bearing 1a is pressed against the lower end face 31a. The mounting base 3 and the lower end face 31a are integrally formed, which simplifies the structural design of the probe 4. Alternatively, they can be formed separately and then connected. By providing the lower end face 31a at the bottom of the mounting channel 31, the outer rings of the two bearings 1a can be axially supported, facilitating installation.

[0047] Among the above-mentioned technical solutions, such as Figure 1 and Figure 2As shown, a portion of the probe body 41 is located within an opening on the lower end face 31a; the probe body 41 is provided with a radially protruding annular boss 42, which is located within the opening on the lower end face 31a and spaced apart from the inner ring sidewall of the lower end face 31a. The radial dimension of the annular boss 42 is larger than the radial dimension of the portion of the probe body 41 located within the spacer ring 22.

[0048] The inner ring end face of the bearing 1a located on the lower side presses vertically against the platform of the annular boss 42. This allows the annular boss 42 to abut against the inner ring of the bearing 1a in the axial direction, thus forming a stop and preventing the probe 4 from moving upwards. The annular boss 42 and the probe body 41 are integrally formed and can be manufactured by machining or other methods. Besides using the annular boss 42, a shoulder retaining ring 43 can also be used. Those skilled in the art can choose the appropriate method.

[0049] In other technical solutions, such as Figure 1 , Figure 2 and Figure 3 As shown, the probe module 100 also includes a twisted wire fixing seat 5 and a fastener 53. The twisted wire fixing seat 5 has a first channel 51. The first channel 51 extends along the radial surface of the probe member 4. The center line of the first channel 51 passes through the central axis of the probe member 4.

[0050] The probe module 100 also includes a twisted wire assembly 6, such as Figures 1 to 3 as well as Figure 4 As shown, the twisted wire assembly 6 includes a twisted wire body 61 and a fixing block 62 fixed to one end of the twisted wire body 61. The fixing block 62 is tightly bonded to the twisted wire body 61 by structural adhesive. The fixing block 62 can be inserted into the first channel 51. The fastener 53 is used to lock the fixing block 62 in different positions of the first channel 51.

[0051] In this way, the length of the torsion wire body 61 can be adjusted by locking the fixing block 62 at different positions within the first channel 51, thereby offsetting the influence of inherent differences in the torsion wire body 61 on the test. The length of the torsion wire body 61 can be adjusted within a 4mm range, compensating for errors in the thromboelastography test results caused by variations in the elastic modulus of the torsion wire body 61. Of course, those skilled in the art can also adjust the length of the torsion wire body 61 within different ranges by adjusting the different lengths of the first channel 51.

[0052] The fixing block 62 has an inner through hole 63 for fixing one end of the twisted wire body 61. The fixing block 62 and the twisted wire body 61 are precisely matched, which can ensure a high degree of concentricity when adjusting the effective length of the twisted wire body 61 and reduce the error generated during the twisted wire length adjustment process. The mechanical difference between the inner diameter of the inner through hole 63 and the outer diameter of the twisted wire body 61 is less than 0.15mm, which can achieve a good bonding effect and ensure good concentricity between the fixing block 62 and the twisted wire, and the operation is simple. The twisted wire body 61 extends from one end face of the fixing block 62. After the end face is bonded to the twisted wire body 61, a rounded structural adhesive transition is reserved to avoid stress concentration at the end and improve the service life of the twisted wire body 61.

[0053] Specifically, the fastener 53 is a locking screw, and the twisted wire fixing seat 5 also has a second channel 52 that penetrates part of the wall of the first channel 51. The second channel 52 extends perpendicular to the first channel 51. The second channel 52 is used to insert the fastener 53, which presses against the fixing block 62 radially along the first channel 51. For example, if it is necessary to increase the length of the twisted wire body 61, a smaller portion of the fixing block 62 is inserted into the first channel 51, and the locking screw is screwed into the second channel 52 to press the fixing block 62 radially against the wall of the first channel 51; conversely, if it is necessary to reduce the length of the twisted wire body 61, the operation is reversed. In this way, the fixing block 62 can be quickly locked and unlocked, which is convenient for operation.

[0054] In such Figure 5 In the example shown, a reflector 54 is also provided on the torsion wire fixing seat 5, and the plane of the reflector 54 is perpendicular to the first channel 51. The length of the torsion wire body 61 can be adjusted within a range of 4mm to compensate for the error in the thromboelastography test results caused by the difference in the elastic modulus of the torsion wire body 61. The reflector 54 is used to adapt the laser 8 and the image sensor 9. The linear laser emitted by the laser 8 is reflected by the mirror surface of the reflector 54 and projected onto the image sensor 9. The image sensor 9 detects the value of the rotation angle of the probe 4. The mirror surface of the reflector 54 is located on the central axis of the probe 4 to ensure that the probe rotation angle is accurately transmitted by the reflector 54.

[0055] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A probe module for an elastogram, characterized in that, The device includes a probe (4) and a bearing assembly (1). The bearing assembly (1) includes two bearings (1a) spaced apart along the axial direction. The outer rings of the two bearings (1a) serve as fixed ends, and the inner rings are used to fix them to the probe (4). The center line of the bearings (1a) coincides with the central axis of the probe (4).

2. The probe module for an elastogram according to claim 1, characterized in that, It also includes a fixing component (2) and a mounting base (3); the fixing component (2) is used to fix the outer ring of each of the bearings (1a) to the mounting base (3); The mounting base (3) has a mounting channel (31) for accommodating the bearing assembly (1), the mounting channel (31) being coaxially arranged with each of the bearings (1a).

3. The probe module for an elastogram according to claim 2, characterized in that, The fixing component (2) further includes a spacer ring (22), which is axially supported between the outer rings of the two bearings (1a).

4. The probe module for an elastogram according to claim 3, characterized in that, The mounting base has a lower end face (31a), and the mounting channel has an opening formed in the middle of the lower end face; the opening is coaxially arranged with the probe (4); In the axial direction, the outer ring of the bearing (1a) located on the lower side presses against the lower end face (31a).

5. The probe module for an elastogram according to claim 4, characterized in that, The mounting base (3) and the lower end face (31a) are integrally formed.

6. The probe module for an elastogram according to claim 5, characterized in that, The probe element (4) includes a probe body (41), a portion of which is located within the opening; The probe body (41) is provided with a radially protruding annular boss (42), which is located inside the opening and is spaced apart from the inner ring sidewall of the lower end face (31a).

7. The probe module for an elastogram according to claim 6, characterized in that, The inner ring end face of the bearing (1a) located on the lower side presses vertically against the platform of the annular boss (42).

8. The probe module for an elastogram according to claim 6, characterized in that, The fixing component (2) also includes a pressure ring (21), a portion of which axially presses against the upper end face of the mounting base (3) and a portion of which presses against the outer ring end face of the bearing (1a) located on the upper side.

9. The probe module for an elastogram according to claim 8, characterized in that, A portion of the probe body (41) passes through the pressure ring (21) to the outside of the mounting channel (31); The portion of the probe body (41) located outside the mounting channel (31) is also provided with a shoulder retainer (43), which axially presses against the inner ring end face of the bearing (1a) located on the upper side.

10. The probe module for an elastogram according to any one of claims 1-9, characterized in that, It also includes a wire fixing seat (5) and a fastener (53), wherein the wire fixing seat (5) has a first channel (51) extending along the radial surface of the probe (4); It also includes a twisted wire assembly (6), which includes a twisted wire body (61) and a fixing block (62) fixed to one end of the twisted wire body (61). The fixing block (62) can be inserted into the first channel (51), and the fastener (53) is used to lock the fixing block (62) at different positions in the first channel (51).

11. The probe module for an elastogram according to claim 10, characterized in that, The twisted wire fixing seat (5) is also provided with a second channel (52), which penetrates part of the wall of the first channel (51); the second channel (52) is used to insert the fastener (53), and the fastener (53) is pressed against the fixing block (62) radially along the first channel (51).

Images