CN215839336U - Novel planer tool device - Google Patents

Abstract

The utility model provides a novel planer tool device, which belongs to the technical field of medical instruments and comprises a sleeve and a tool bit arranged in the sleeve, wherein one end of the sleeve is connected with a joint, the other end of the sleeve is provided with an opening for the tool bit to enter and exit, the sleeve and the joint are respectively provided with a hollow structure, meanwhile, the tool bit can penetrate through the hollow structure of the joint and perform axial movement and rotation in the hollow structure of the sleeve, and a bridge circuit module is arranged in the joint. The utility model can prompt the medical operator whether to touch the part to be avoided in the operation process; when reaching cutting or grinding position to the planer tool, even in the condition of arthroscope blind area or unfavorable observation, still can pass through the sensor, pass through the pilot lamp with the contact site and transmit for the art person, do benefit to medical staff and judge the inside condition, operate smoothly.

Description

Novel planer tool device

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a novel plane cutter device.

Background

In the operation of carrying out internal or external tissue excision such as ear, nose, larynx, cervical bone and joint, need to pass through planer tool excision pathological change tissue or unnecessary tissue, or trim skeleton appearance profile, in the operation process, generally need the endoscope to observe the position of planer tool head, because the endoscope has certain limitation, can not cover all scenes of using, like narrow and small space, the endoscope dead angle, accurate cutting etc. operates under the endoscope, often be unfavorable for the observation, can appear excising inaccurately or incomplete, operation process inefficiency, the wound is big and bleed much, postoperative recovery cycle extension, also increased treatment cost when increasing patient's misery.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a novel planing tool device, which can solve the above problems.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows: the utility model provides a novel planer tool device, is in including sleeve and setting the inside tool bit of sleeve, telescopic one end is connected with the joint, and the other end is provided with and is used for the opening of tool bit business turn over, the sleeve has hollow structure with the joint respectively, simultaneously the tool bit can pass the hollow structure who connects just is in carry out axial motion and rotation in the telescopic hollow structure, the internally mounted who connects has the bridge circuit module.

Furthermore, the sensing device comprises a pressure sensor and a bridge circuit module, the pressure sensor is attached to the position, close to the opening, on the outer side wall of the sleeve, or the pressure sensor is arranged at the position of the head of the cutter head, and the pressure sensor is electrically connected with the bridge circuit module through a conducting wire.

Further, the pressure sensor is a thin film flexible pressure sensor which can be bent or folded.

Further, the pressure sensor is provided with an insulating material, and the strain gauge can be wrapped in the pressure sensor.

Furthermore, the bridge circuit module is a quadrilateral circuit structure composed of four resistors, wherein three resistors are fixed resistors, and the remaining resistor is a variable resistor and is used for sensing the measured change.

Further, the conducting wire is arranged on the outer side wall of the sleeve, and meanwhile, an insulating layer is coated on the outer portion of the conducting wire.

Furthermore, the sensing device further comprises an indicator light and a power supply, the indicator light is electrically connected with the power supply, the indicator light can be turned off or turned on according to the voltage direction change generated by the bridge circuit module, and the power supply is a button battery.

Further, the indicator light is a light emitting diode, and when a forward voltage is generated, the diode is lightened; when a reverse voltage is generated, the diode is turned off.

Further, the tool bit includes cutting tool bit and grinding tool bit, the afterbody of tool bit can connect power main shaft, can high-speed rotation after the tool bit circular telegram, realize grinding or cutting.

Compared with the prior art, the novel planing tool device has the following advantages: when the planer tool device enters an incision, if the planer tool device contacts soft tissues or bone, the pressure sensor can sense pressure signals with different sizes, the pressure signals cause the change of the variable resistance, and after passing through the bridge circuit, the indicator light can be turned off or on according to the change of the voltage direction to prompt a medical operator whether to touch a part needing to be avoided; when reaching the cutting or grinding position, can combine the accurate cutting of arthroscope, even in the condition of arthroscope blind area or unfavorable observation, still can pass through the sensor, pass through the pilot lamp with the contact site and transmit for the art person, do benefit to medical staff and judge the inside condition, operate smoothly.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a novel planing tool device according to an embodiment of the present invention;

FIG. 2 is a view taken along the line A in FIG. 1;

FIG. 3 is a partial enlarged view of portion B of FIG. 1;

FIG. 4 is an enlarged view of a portion C of FIG. 1;

FIG. 5 is a schematic structural diagram of a sensing device according to an embodiment of the present invention;

FIG. 6 is a diagram of the connection lines of the bridge circuit.

Description of reference numerals:

1. a cutter head; 2. a sleeve; 3. a joint; 4. a sensing device;

41. a pressure sensor; 42. a wire; 43. an indicator light; 44. a bridge circuit module; 45. a power source.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 5, the present invention is a novel planer tool device, which comprises a sleeve 2 and a tool bit 1 disposed inside the sleeve 2, wherein the tool bit 1 is a mainstream tool bit 1 in the market, and is divided into a cutting tool bit 1 and a grinding tool bit 1 according to actual use, the head of the tool bit 1 directly contacts with soft tissue or bone, the tail of the tool bit 1 can be connected with a power spindle, and the tool bit 1 can rotate at high speed after being powered on, so as to achieve grinding or cutting. Sleeve 2's one end is connected with and connects 3, and both can not relative activities, and the other end is provided with and is used for the opening of the business turn over of tool bit 1, sleeve 2 and joint 3 have hollow structure respectively, simultaneously tool bit 1 can pass connect 3 hollow structure and be in carry out axial motion and rotation in sleeve 2's hollow structure, pass the operation incision at the planer tool device or the head during operation, sleeve 2 not only can protect surrounding tissue, can also reduce the vibrations of tool bit 1 during operation simultaneously, improve cutting efficiency. A bridge circuit module 44 is mounted inside the connector 3.

The sensing device 4 comprises a pressure sensor 41 and a bridge circuit module 44, the pressure sensor 41 is attached to the outer side wall of the sleeve 2 at a position close to the opening, or the pressure sensor 41 is arranged at the head position of the cutter head 1, and the pressure sensor 41 and the bridge circuit module 44 are electrically connected through a lead 42. The pressure sensor 41 is a thin film flexible pressure sensor 41, and is a gauge pressure sensor that can be bent or folded. When the planing tool device is inserted into the area around the operation site, the sleeve 2 contacts soft tissue, cartilage or cortical bone, and because the hardness difference between the soft tissue and the surface of the bone is large, the pressure sensor 41 can generate obvious pressure change when contacting. The sensing device 4 further includes an indicator light 43 and a power supply 45, the indicator light 43 is electrically connected to the power supply 45, the indicator light 43 can be turned off or turned on according to the voltage direction change generated by the bridge circuit module 44, and the power supply 45 is a button battery.

The pressure sensor 41 is provided with an insulating material, so that the strain gauge can be wrapped in the pressure sensor, and the body fluid is not in direct contact with the circuit, so that the interference on the test result is avoided.

The bridge circuit module 44 is a quadrilateral circuit structure composed of four resistors, wherein three resistors are fixed resistors, the remaining one resistor is a variable resistor, each resistor is called a bridge arm, the variable resistor, i.e., a special resistor, is used for sensing the measured change, and the special resistor is the resistance value of the sensor.

The wire 42 is arranged on the outer side wall of the sleeve 2, and an insulating layer is coated on the outer part of the wire 42, so that the wire 42 is very thin, only the insulating layer needs to be coated, and the thickness is almost negligible.

The indicator light 43 is a light emitting diode, and when a forward voltage is generated, the diode lights up; when a reverse voltage is generated, the diode is turned off.

Fig. 6 shows a connection circuit diagram of the bridge circuit, wherein R1, R2, R3 are fixed resistors, and Rx is a variable special resistor, i.e., a sensor resistor. When the pressure sensor 41 contacts hard tissues, the contact stress becomes larger, Rx becomes larger, when Rx/R1 is larger than R2/R3, UB is larger than UA, the voltage passing through the diode is positive voltage, and the diode lights up; when the sensor contacts soft tissue, the contact stress is reduced, Rx is reduced, and when Rx/R1 < R2/R3, UB < UA, the voltage passing through the diode is reverse voltage, and the diode is not bright.

Specifically, when the operation requires the insertion of a planing tool, the planing tool enters through the channel of the incision, and the indicator light 43 will light up if the sensor touches hard tissue during the operation, and will turn off if the sensor touches soft tissue. When the plane cutter reaches the working position, the medical staff can judge which part is to be cut or ground by combining the on-off state of the indicator lamp 43, so that the wrong cutting is avoided. Due to the sensitivity of the sensor, when the observation angle is poor or the tissue is cut accurately, the defect of subjective judgment of an operator can be overcome. After the cutting is completed, the indicator lamp 43 can be used for observing whether other tissues are pulled or not in the process of taking out the planer tool.

Specifically, when a planer tool needs to be inserted into a surgery, the planer tool enters from a channel of a surgical incision, if the pressure sensor 41 touches hard tissues in the process, the contact stress is increased to a large value, the special resistance is increased, at the moment, UA is greater than UB and is positive voltage, a signal is transmitted into the indicator lamp 43 through the lead 42, and the indicator lamp 43 is lightened; if the pressure sensor 41 touches the soft tissue, the contact stress will increase to a small value, the specific resistance will decrease, at which time UA < UB, and a reverse voltage is applied, and a signal is transmitted via the line 42 to the indicator light 43, and the indicator light 43 will be in the off state. When the planer tool device is conveyed into the bone channel until the planer tool reaches the working position, the medical staff can judge whether the advancing direction is correct or not by combining the color of the indicating lamp 43, and can also judge which part is to be cut or ground, so that the wrong cutting is avoided. Due to the sensitivity of the sensor, when the observation angle is poor or the tissue is cut accurately, the defect of subjective judgment of an operator can be overcome. After the cutting is completed, the indicator lamp 43 can be used for observing whether other tissues are pulled or not in the process of taking out the planer tool.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (9)

1. The utility model provides a novel planer tool device which characterized in that: including sleeve (2) and setting be in tool bit (1) inside sleeve (2), the one end of sleeve (2) is connected with and connects (3), and the other end is provided with and is used for the opening of tool bit (1) business turn over, sleeve (2) and joint (3) have hollow structure respectively, simultaneously tool bit (1) can pass the hollow structure who connects (3) just carry out axial motion and rotation in the hollow structure of sleeve (2), the internally mounted who connects (3) has bridge circuit module (44).

2. A novel planing tool assembly as claimed in claim 1, wherein: the sensing device (4) comprises a pressure sensor (41) and a bridge circuit module (44), wherein the pressure sensor (41) is attached to the position, close to the opening, on the outer side wall of the sleeve (2), or the pressure sensor (41) is arranged at the position of the head of the cutter head (1), and the pressure sensor (41) is electrically connected with the bridge circuit module (44) through a lead (42).

3. A novel planing tool assembly as claimed in claim 2, wherein: the pressure sensor (41) adopts a thin film flexible pressure sensor (41) which can be bent or folded.

4. A novel planing tool assembly as claimed in claim 3, wherein: the pressure sensor (41) is provided with an insulating material, and can wrap the strain gauge therein.

5. A novel planing tool assembly as claimed in claim 2, wherein: the bridge circuit module (44) is a quadrilateral circuit structure composed of four resistors, wherein three resistors are fixed resistors, and the remaining one resistor is a variable resistor and is used for sensing the measured change.

6. A novel planing tool assembly as claimed in claim 3, wherein: the lead wire (42) is arranged on the outer side wall of the sleeve (2), and meanwhile, an insulating layer is coated on the outer portion of the lead wire (42).

7. A novel planing tool assembly as claimed in claim 2, wherein: the sensing device (4) further comprises an indicator light (43) and a power supply (45), the indicator light (43) is electrically connected with the power supply (45), the indicator light (43) can be turned off or turned on according to the voltage direction change generated by the bridge circuit module (44), and the power supply (45) is a button battery.

8. A novel planing tool assembly as claimed in claim 7, wherein: the indicator light (43) is a light-emitting diode, and the diode lights up when forward voltage is generated; when a reverse voltage is generated, the diode is turned off.

9. A novel planing tool assembly as claimed in claim 1, wherein: the tool bit (1) comprises a cutting tool bit (1) and a grinding tool bit (1), the tail of the tool bit (1) can be connected with a power spindle, and the tool bit (1) can rotate at a high speed after being electrified to realize grinding or cutting.

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