CN213910160U

CN213910160U - A probe force measuring device

Info

Publication number: CN213910160U
Application number: CN202021069665.5U
Authority: CN
Inventors: 李翔; 郑皓天; 徐锡明; 史建刚; 朱晓娟; 达先鸿; 李若男
Original assignee: Shanghai Changzheng Hospital; University of Shanghai for Science and Technology
Current assignee: Shanghai Changzheng Hospital; University of Shanghai for Science and Technology
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-08-10
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses a probe force measuring device, comprising: a support frame, a force measurement sensor fixedly connected with the support frame, a force measurement rod assembly fixed with the force measurement sensor, and a force measurement rod The contact of the assembly is threadedly connected, and the force measuring rod assembly includes a fixed rod fixed on the load cell and a connecting rod threadedly connected with the fixed rod, and one end of the connecting rod away from the fixed rod is threadedly connected with a contact The support frame includes a support block with a through slot along its length direction, and a mounting groove is set on the support block, a load cell is installed in the mounting groove, and the support block is fixed on a surface away from the mounting groove There is a support plate, and a button is fixed on the support plate. According to the utility model, the structure is simple, the probe force measuring device can detect the tension of the patient's nerve at any time during the operation, the display can display the measured tension value in real time, and provide real-time data reference for the smooth operation of the operation .

Description

Probe force measuring device

Technical Field

The utility model relates to a technical field of probe dynamometry, in particular to probe force measuring device.

Background

Surgery is the primary mode of surgical treatment and surgeons strive to target the best treatment with minimal tissue damage. In the operation process, need to stir neural tissue sometimes and operate, the doctor that experience is not enough only leans on both hands control to stir the spirit often difficult dynamics of holding and cause neural tissue impaired, especially to novice doctor, stir the nervous tight degree of tightness of not good nerve of nerve holding when doing the operation, cause the damage to nerve easily, cause outside, and the current tight measuring probe ware of tightening to nerve can't accurate measuring nervous accurate degree of jumping, inconvenient doctor detects and watches at any time at the process of operation moreover.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists among the prior art, the utility model aims at providing a probe measuring force device, simple structure, this probe measuring force device can carry out tension detection to the nerve of disease at any time when the operation goes on, thereby display (screen) can show the tension value that records in real time and provide real-time data reference for going on smoothly of operation. In order to realize the above objects and other advantages in accordance with the present invention, there is provided a probe force measuring device, comprising:

the device comprises a rotatable support frame, a force measuring sensor fixedly connected with the support frame, a force measuring rod assembly fixedly connected with the force measuring sensor and a contact head in threaded connection with the force measuring rod assembly, wherein the force measuring rod assembly comprises a fixed rod fixed on the force measuring sensor and a connecting rod in threaded connection with the fixed rod, and one end of the connecting rod, far away from the fixed rod, is in threaded connection with the contact head;

the supporting frame comprises a supporting block provided with a through groove along the length direction of the supporting block, a mounting groove is formed in the supporting block, a force measuring sensor is mounted in the mounting groove, a supporting plate is fixedly connected to one surface, away from the mounting groove, of the supporting block, and a button is fixedly connected to the supporting plate;

one side fixedly connected with that the supporting shoe is adjacent wears the picture peg on the supporting shoe, wear to have seted up a interlude hole on the picture peg, the dead lever has been placed in leading to the inslot, just on the force cell sensor was fixed in to the one end of dead lever, the other end was worn out and is extended along dead lever length direction from the interlude hole.

Preferably, the supporting block is far away from one end of button and runs through in the perpendicular logical groove direction and has seted up a rotation shaft hole, be connected with the axis of rotation in the rotation shaft hole.

Preferably, a fixing hole is formed in the mounting groove, and a rotating groove is formed in the bottom surface of one end, far away from the fixing hole, of the supporting block.

Preferably, the fixing rod comprises a fixing plate, a first fixing rod fixedly connected with the fixing plate and a second fixing rod fixedly connected with the first fixing rod, and the fixing plate is provided with a threaded connecting hole.

Preferably, the first fixing rod is connected with the second fixing rod through a switching rod, the switching rod is a bending connecting rod, one end, far away from the first fixing rod, of the second fixing rod is fixedly connected with a threaded rod, and the threaded rod is in threaded connection with the connecting rod.

Preferably, the button comprises a button head and a connecting column fixedly connected with the button head, a button hole is formed in the supporting plate, and the connecting column is inserted into the button hole in a penetrating mode.

Preferably, the load cell includes an electric pressure sensor and a signal line electrically connected to the electric pressure sensor, the electric pressure sensor is fixedly mounted in the mounting groove, and the signal line penetrates out of the through groove and extends along the length direction of the signal line.

Compared with the prior art, the utility model, its beneficial effect is: the probe force measuring device can keep the initial positions of the no-load force measuring rod component and the supporting frame so as to ensure the accuracy of detecting the tightness of the nerve, the support frame provides a support point for the force measuring rod assembly and is accommodated and installed, so that the force measuring rod assembly is more sensitive to detect, moreover, the error generated by the lever structure is small, the adjustment can be controlled, and the depth of the force measuring rod component for detecting the nerve tissue is increased through the threaded connection of the fixing rod and the connecting rod in the force measuring rod component, the pressure signal is transmitted to the force measuring sensor through the force measuring rod component, the force measuring sensor converts the pressure signal into an electric signal, the electric signal is transmitted to the display through the signal wire, the display processes the electric signal, and then real-time display is carried out, so that doctors can conveniently observe the tension condition of nerves, and real-time data reference is never provided for smooth operation.

Drawings

Fig. 1 is a schematic three-dimensional structure of a probe force measuring device according to the present invention;

fig. 2 is a schematic three-dimensional structure of a support frame of a probe force measuring device according to the present invention;

fig. 3 is a schematic view of a three-dimensional structure in a bottom direction of a support frame of the probe force measuring device according to the present invention;

fig. 4 is a schematic three-dimensional structure of a fixing rod of the probe force measuring device according to the present invention;

FIG. 5 is a schematic three-dimensional view of a button of a probe force measuring device according to the present invention;

fig. 6 is a schematic three-dimensional structure diagram of a pressure detector of the probe force measuring device according to the present invention.

In the figure: 10. a connecting rod; 20. fixing the rod; 30. a support frame; 40. a contact; 50. a button; 60. a force sensor; 70. a rotating shaft; 31. a support block; 32. a through groove; 34. a support plate; 35. mounting grooves; 36. a fixing hole; 37. rotating the shaft hole; 38. a rotating groove; 39. inserting plates; 310. inserting holes; 21. a fixing plate; 22. connecting a threaded hole; 23. a first fixing lever; a second fixing bar; 25. a transfer lever; 51. pressing the head; 52. connecting columns; 61. a power pressure sensor; 62. and a signal line.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a probe force measuring device includes: the device comprises a rotatable support frame 30, a force measuring sensor 60 fixedly connected with the support frame 30, a force measuring rod assembly fixedly connected with the force measuring sensor 60 and a contact 40 in threaded connection with the force measuring rod assembly, wherein the diameter of the force measuring rod assembly is 2-5 mm, the total length of the force measuring rod assembly is 150-500 mm, the excitation voltage of the force measuring sensor 60 is 5-15V, the output resistance is 350 +/-5 omega, the insulation resistance is more than 5000 omega, and the sensitivity is 2.79mV/V, in another embodiment, the force measuring sensor 60 can be a piezoresistor and is used for transmitting signal variation caused by force variation, the force measuring rod assembly comprises a fixed rod 20 fixed on the force measuring sensor 60 and a connecting rod 10 in threaded connection with the fixed rod 20, the connecting rod 10 is used for increasing the length of the force measuring rod so as to detect deeper nervous tissues, the end of the connecting rod 10 far from the fixing rod 20 is connected with a contact 40 by screw thread, when the contact touches the nerve, the force generated is transmitted by the force measuring rod component, the force measuring rod component is fixedly connected with the force measuring sensor 60, therefore, the force measuring sensor 60 receives the force transmitted by the force measuring rod component, the force measuring sensor 60 converts the pressure signal into an electric signal to be output, the support frame 30 comprises a support block 31 which is provided with a through groove 32 along the length direction, the support block 31 is used for supporting and containing, the force measuring sensor 60 and the force measuring rod component are generally placed in the support block 31, the force measuring sensor 60 can also convert the pressure signal into the electric signal to be transmitted to an external display by an external form, the magnitude of the output is displayed, the display and a power supply are arranged in the other embodiment, and the display, the power supply, the force measuring sensor 60 and the force measuring, and a mounting groove 35 is opened on the supporting block 31, a force measuring sensor 60 is installed in the mounting groove 35, a supporting plate 34 is fixedly connected on one surface of the supporting block 31 far away from the mounting groove 35, a button 50 is fixedly connected to the supporting plate 34, the connecting part of the button 50 is made of elastic material, used for not limiting the rotation of the supporting frame 30 when in contact, one surface of the supporting block 31 adjacent to the supporting plate 34 is fixedly connected with a through inserting plate 39, the insertion plate 39 is provided with an insertion hole 310, and when the fixing rod 20 passes through the insertion hole 310, providing a support point for the rod 20 during use, the rod 20 being placed in the channel 32, and one end of the fixing rod 20 is fixed on the load cell 60, and the other end of the fixing rod passes through the through-hole 310 and extends along the length direction of the fixing rod 20, this arrangement allows the support block to act as a support point, providing support and securement for the securing rod 20 and connecting rod 10.

Further, a rotating shaft hole 37 is formed in one end, away from the button 50, of the supporting block 31 and penetrates in the direction perpendicular to the through groove 32, a rotating shaft 70 is connected to the rotating shaft hole 37, the rotating shaft 70 is used for connecting the supporting frame 30 with the shell and is used for enabling the supporting frame 30 to rotate in a small angle, moreover, the shell wraps up the supporting frame 30 partially to form a stabilizing device, a supporting point is provided for the rotating shaft 70, and meanwhile, the supporting block is used for protecting a machine body to facilitate testing.

Referring to fig. 2-3, a fixing hole 36 is formed in the mounting groove 35, and a rotating groove 38 is formed in a bottom surface of the supporting block 31 at an end away from the fixing hole 36, wherein the rotating groove 38 is used for accommodating a limiting device for limiting a rotation angle of the supporting frame 30, and the limiting device may be a spring.

Referring to fig. 4, the fixing rod 20 includes a fixing plate 21, a first fixing rod 23 fixedly connected to the fixing plate 21, and a second fixing rod 24 fixedly connected to the first fixing rod 23, a threaded connection hole 22 is formed in the fixing plate 21, the threaded connection hole 22 fixedly mounts the fixing plate 21 on the force sensor 60 through a screw, the first fixing rod 23 is connected to the second fixing rod 24 through a transition rod 25, the transition rod 25 is a bending type connecting rod, the transition rod 25 adopts a bending type structure to reduce the thickness of the probe force measuring device, a threaded rod 25 is fixedly connected to one end of the second fixing rod 24 far away from the first fixing rod 23, and the connecting rod 10 is connected to the threaded rod 25 through a thread.

Referring to fig. 5, the button 50 includes a button head 51 and a connecting column 52 fixedly connected to the button head 51, a button hole 341 is formed on the supporting plate 34, and the connecting column 52 is inserted into the button hole 341.

Referring to fig. 6, the load cell 60 includes an electric pressure sensor 61 and a signal line 62 electrically connected to the electric pressure sensor 61, the electric pressure sensor 61 adopts a measuring range of 10N and a precision of 0.01N, so that the maximum measuring range of the detecting force device is 5N, the precision is 0.005N, and the maximum error is 1%, the electric pressure sensor 61 is fixedly installed in the installation groove 35, and the signal line 62 extends out of the through groove 32 and along the length direction thereof, and when the electric pressure sensor 61 receives a pressure signal, the pressure signal is converted into an electric signal which is transmitted to the display through the signal line 62, so as to display the magnitude of the applied force.

According to the lever principle, the test error calculation method of the device comprises the following steps: the distance from the left length of the force measuring rod assembly to the fulcrum is set as a, the distance from the center of the right contact 40 to the fulcrum is set as b, the length of the contact is 2c, the maximum temperature difference is c/b, and in the device, 2/200 is 100 percent to 1 percent, and the error can be controlled by changing the parameters of the device.

The working principle is as follows: the probe force measuring device is sterilized, debugged and calibrated before use, the support frame 30 is fixed through the rotating groove 38 on the supporting block 31, but the support frame 30 can rotate, then the force sensor 60 is placed in the mounting groove 35, the force sensor 60 is fixed in the mounting groove 35 through a fixing hole 36 by a screw, then the fixing plate 21 on the fixing rod 20 is fixedly mounted on the force sensor 60, the first fixing rod 23 and the second fixing rod 24 on the fixing rod 20 are connected through the adapter rod 25, the fixing rod 20 is mounted in the through groove 32 of the supporting block 31, one end of the fixing rod 20 is fixed on the force sensor 60, the other end of the fixing rod 20 penetrates through the through hole 310 and extends along the length direction of the fixing rod 20, the fixing rod 20 is in threaded connection with the connecting rod 10, the connecting rod 10 is in threaded connection with the contact 40, and the rotating shaft hole 37 on the supporting block 31 is connected with the rotating shaft 70, and the supporting plate 34 is fixedly connected with a button 50, and finally, the button 50 is pressed to a force limiting position to drive the supporting block 31 to rotate, so that the contact 40 generates fixed displacement, the force sensor 60 receives a pressure signal of the force measuring rod assembly, then the pressure signal is converted into an electric signal and transmitted to a display through a signal wire 62, and the display performs signal processing through comparison with standard force to display the magnitude of output force.

The number of devices and the scale of the processes described herein are intended to simplify the description of the present invention, and applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application suitable for this invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

1. a probe force measuring device, is characterized in that, comprises:

A rotatable support frame (30), a load cell (60) fixedly connected to the support frame (30), a load cell assembly fixed to the load cell (60), and the load cell A contact (40) for threaded connection of the assembly, the force measuring rod assembly includes a fixing rod (20) fixed on the load cell (60) and a connecting rod (10) threadedly connected with the fixing rod (20) ), a contact (40) is threadedly connected to one end of the connecting rod (10) away from the fixing rod (20);

The support frame (30) includes a support block (31) with a through groove (32) defined along its length direction, and a mounting groove (35) is defined on the support block (31), and the mounting groove (35) is installed in the support block (35). A load cell (60) is provided, a support plate (34) is fixedly fixed on a surface of the support block (31) away from the installation groove (35), and a button (50) is fixedly fixed on the support plate (34);

The side of the support block (31) adjacent to the support plate (34) is fixedly connected with an insertion plate (39). A fixing rod (20) is placed, and one end of the fixing rod (20) is fixed on the load cell (60), and the other end passes through the penetration hole (310) and extends along the length direction of the fixing rod (20) .

2. The probe force-measuring device according to claim 1, characterized in that, one end of the support block (31) away from the button (50) and a rotating shaft hole (37) runs through in the direction of the vertical through groove (32), A rotating shaft (70) is connected in the rotating shaft hole (37).

3. The probe force measuring device according to claim 1, wherein a fixing hole (36) is opened in the installation groove (35), and the bottom surface of one end of the support block (31) away from the fixing hole (36) A rotation groove (38) is opened on the upper part.

4. The probe force measuring device according to claim 1, wherein the fixing rod (20) comprises a fixing plate (21) and a first fixing rod (23) fixedly connected with the fixing plate (21). ) and a second fixing rod (24) fixedly connected with the first fixing rod (23), the fixing plate (21) is provided with a threaded connection hole (22).

5. The probe force measuring device according to claim 4, wherein the first fixing rod (23) and the second fixing rod (24) are connected by an adapter rod (25), and the adapter rod (25) is a bending type connecting rod, and one end of the second fixing rod (24) away from the first fixing rod (23) is fixedly connected with a threaded rod, and the threaded rod is threadedly connected to the connecting rod (10).

6 . The probe force measuring device according to claim 1 , wherein the button ( 50 ) comprises a pressing head ( 51 ) and a connecting post ( 52 ) fixedly connected with the pressing head ( 51 ), so the A button hole (341) is formed on the support plate (34), and the connecting column (52) is inserted into the button hole (341).

7. The probe force measuring device according to claim 1, wherein the load cell (60) comprises a power pressure sensor (61) and a signal line (61) electrically connected to the power pressure sensor (61). 62), the power pressure sensor (61) is fixedly installed in the installation slot (35), and the signal wire (62) passes through the through slot (32) and extends along its length direction.