CN216854786U - Cutting knife - Google Patents

Abstract

The application provides a cutting knife, including cutter portion, cutter portion includes clamp and cutter body, the clamp with the cutter body can remove in opposite directions to organize the centre gripping and be in the clamp with between the cutter body, the cutting knife still includes the detection portion, the detection portion with cutter portion meets, in order to acquire the cutter body with distance between the clamp. The application provides a pair of cutting knife can acquire the thickness of the tissue of centre gripping, avoids appearing because of the too much cutting speed that leads to of centre gripping slows down, tool bit burn-through damage and host computer warning scheduling problem, guarantees to operate normally and goes on, reduces the risk of operation.

Description

Cutting knife

Technical Field

The application belongs to the technical field of medical instrument, concretely relates to cutting knife.

Background

An ultrasonic cutting hemostatic scalpel is a medical instrument which is applied to surgical operations abroad at the end of the 80 th century. The ultrasonic cutting hemostatic knife integrates separation, cutting and hemostasis, reduces the configuration and replacement of instruments in the operation and greatly shortens the operation time. The ultrasonic cutting hemostatic scalpel can seal fine blood vessels while cutting tissues, can obviously reduce intraoperative hemorrhage, has high cutting precision, generates little eschar and smoke, can keep a clear visual field in endoscopic surgery, and obviously improves the safety of the surgery. The ultrasonic cutting hemostatic scalpel has the advantages and is popular among doctors, and becomes an important surgical operation tool.

When the existing ultrasonic cutting hemostatic knife works, a tissue is clamped through a knife head, and then the tissue is cut off by ultrasonic energy. However, the thickness of the tissue clamped by the cutter head cannot be detected by the existing ultrasonic cutting hemostatic scalpel, when the tissue clamped by the cutter head is too much, due to overlarge load, abnormal conditions such as slowing of cutting speed, burning-through damage of the cutter head and the like can be caused, even a host machine can be caused to give an alarm, the progress of the operation is influenced, and the risk of the operation is improved.

SUMMERY OF THE UTILITY MODEL

Consequently, the technical problem that this application will be solved lies in providing a cutting knife, can acquire the thickness of the tissue of centre gripping, avoids cutting speed that leads to because of the too much tissue of centre gripping to slow down, the tool bit burns through and damages and host computer warning scheduling problem to appear, guarantees to operate normally going on, reduces the risk of operation.

In order to solve the above problems, the present application provides a cutting knife, including cutter portion, cutter portion includes clamp and cutter body, the clamp with the cutter body can move in opposite directions, in order to organize the centre gripping the clamp with between the cutter body, the cutting knife still includes the detection portion, the detection portion with cutter portion meets, in order to acquire the cutter body with distance between the clamp.

Optionally, the clamp body includes a first clamping section and a first connecting section, and the cutter body includes a second clamping section and a second connecting section; the cutter part also comprises a pipe body, the first connecting section and the second connecting section are connected with the pipe body, and the first connecting section and/or the second connecting section are/is hinged with the pipe body; the cutting knife further comprises a driving piece, the driving piece can drive the first clamping section and the second clamping section to move oppositely so as to clamp tissues between the first clamping section and the second clamping section, and the detection portion is used for acquiring the distance between the first clamping section and the second clamping section.

Optionally, the tube body includes an inner tube and an outer tube, the inner tube is sleeved in the outer tube along an axial direction of the outer tube, the first connecting section is hinged to the inner tube and the outer tube, the second connecting section is fixedly connected to the inner tube, and the driving member can drive the inner tube to slide in an axial direction of the outer tube along the outer tube in the outer tube, so as to drive the first clamping section to approach or keep away from the second clamping section.

Optionally, the driving member can drive the inner sleeve to move along a first direction, so that the first clamping section is close to the second clamping section; the detection part comprises a processing module and a first detection piece, the processing module is electrically connected with the first detection piece, the first detection piece is used for acquiring a pressure value generated by the inner sleeve when the inner sleeve moves along the first direction, or the first detection piece is used for acquiring a displacement of the inner sleeve along the first direction, and the processing module obtains the distance between the cutter body and the clamp body based on the pressure value or the displacement.

Optionally, the cover is equipped with slide and first elastic component on the outer wall of interior sleeve pipe, still be provided with the separation blade on the interior sleeve pipe, the separation blade is located the first direction side of slide, in order to incite somebody to action first elastic component is spacing in the slide with between the separation blade, the driving piece with the slide meets, the driving piece can drive the slide is in follow on the interior sleeve pipe first direction slides, in order to pass through first elastic component is right the elastic force is applyed to the separation blade, and pass through the separation blade drives interior sleeve pipe is followed first direction removes, first detection piece sets up on the separation blade, first detection piece with first elastic component meets, in order to acquire first elastic component is right the pressure value of first detection piece.

Optionally, the detection portion further includes a second detection piece, the second detection piece and the processing module electrically connected, the second detection piece is located on the first direction side of the driving piece, a second elastic piece is arranged between the driving piece and the second detection piece, one end of the second elastic piece is connected with the driving piece, the other end of the elastic piece is connected with the second detection piece, when the driving piece drives the inner sleeve to move along the first direction, the driving piece compresses the second elastic piece on the second detection piece, so that the second detection piece obtains the pressure value of the second detection piece by the second elastic piece.

Optionally, the stiffness coefficient of the first elastic member is greater than the stiffness coefficient of the second elastic member.

Optionally, the detecting portion further includes a third detecting element, the third detecting element is disposed on the clip body, and the third detecting element is configured to obtain a distance between the knife body and the clip body.

Optionally, a pad body is arranged on the clamp body, the pad body is located on one side of the clamp body close to the cutter body, and the third detection piece is arranged between the clamp body and the pad body.

Optionally, the cutting knife is an ultrasonic cutting hemostatic knife; when the detection part further comprises a first detection piece, the first detection piece is a film pressure sensor; when the detection part further comprises a second detection piece, the second detection piece is a film pressure sensor; when the detection part further comprises a third detection piece, the second detection piece is an eddy current sensor, and the cutter body is made of metal materials.

Advantageous effects

The cutting knife provided by the embodiment of the utility model can obtain the thickness of the clamped tissue, avoids the problems of slow cutting speed, knife head burn-through damage, host alarm and the like caused by clamping excessive tissue, ensures normal operation and reduces the risk of the operation.

Drawings

FIG. 1 is an exploded view of an embodiment of the present application at the handle of a cutting burr;

FIG. 2 is a cross-sectional view of the cutting burr of an embodiment of the present application at the handle;

fig. 3 is an exploded view of the cutting burr of an embodiment of the present application at the body and the collet;

fig. 4 is a schematic perspective view of a cutter body and a clamp body of the cutting knife according to an embodiment of the present application.

The reference numerals are represented as:

1. a clip body; 11. a first clamping section; 12. a cushion body; 2. a cutter body; 21. a second clamping section; 31. an inner sleeve; 32. an outer sleeve; 4. a drive member; 51. a first detecting member; 52. a second detecting member; 53. a third detecting member; 6. a slide sheet; 7. a baffle plate; 8. a limiting member; 91. a first elastic member; 92. a second elastic member.

Detailed Description

Referring to fig. 1 to 4 in combination, according to an embodiment of the present application, a cutting knife includes a cutting knife portion, the cutting knife portion includes a clamp body 1 and a knife body 2, the clamp body 1 and the knife body 2 can move in opposite directions to clamp a tissue between the clamp body 1 and the knife body 2, the cutting knife further includes a detection portion connected to the cutting knife portion to obtain a distance between the knife body 2 and the clamp body 1, the thickness of the clamped tissue can be obtained by obtaining the distance between the knife body 2 and the clamp body 1, and then the problems of slow cutting speed, knife head burn-through damage, host alarm and the like caused by clamping of too many tissues can be avoided, thereby ensuring normal operation and reducing risk of the operation.

The existing cutting knife, especially the ultrasonic cutting hemostatic knife, cannot identify the thickness of the clamped tissue, so that the performance of the cutting knife is unstable during cutting. For example, if the main body still outputs a large amount of energy when the tissue is about to be cut off, the wear is accelerated after a long time use, thereby reducing the service life of the cutter head. For another example, when cutting blood vessels, if the final stage of each cutting process still uses a large amount of power, the cut of the blood vessel may be carbonized, and the closing effect may be affected. In this embodiment, obtain the distance between cutter body 2 and the clamp 1 through setting up the detection portion to obtain the thickness of tissue according to the distance, then can be when the tissue is about to cut off, the control cutting knife suitably reduces the energy, can come the output of dynamic adjustment energy according to the actual cutting condition, improves cutting performance, guarantees good cutting effect.

Further, when the cutting knife is an ultrasonic cutting hemostatic knife, the cutting knife further comprises a host machine, a handle and a pedal. The cutter part is arranged on the handle, and an operator can operate and move the cutter part by holding the handle. The handle is internally provided with a transducer which converts high-frequency electric energy provided by a generator of the host machine into ultrasonic mechanical vibration energy, transmits the ultrasonic mechanical vibration energy to the cutter body 2 and simultaneously transmits ultrasonic energy to perform hemostasis cutting or coagulation on tissues, and the vibration frequency of the cutter body 2 is about 55.5 kHz. The tissue cells contacted with the cutter body 2 can be gasified by high-power ultrasonic waves in the instant water, protein hydrogen bonds are broken, the cells are disintegrated to cut the tissue, and the friction heat energy caused by mechanical vibration coagulates and stops bleeding while cutting the tissue.

Furthermore, an alarm part is arranged on the host machine, and an operator can be reminded of the tissue thickness through the alarm part.

In the laparoscopic surgery, because the field of vision is narrow and small, whether leading to current cutting knife can not accurately judge the centre gripping be the soft tissue, have the hard thing such as bone of probably pressing from both sides, if press from both sides the bone, can lead to cutting position mistake.

In the embodiment, the distance between the cutter body 2 and the clamp body 1 is acquired by arranging the detection part, namely, the detection is carried out through the clamped thickness, and if soft tissue is clamped, the soft tissue can be compressed to a great extent no matter the soft tissue is thick or thin. When a hard object such as a bone is clamped, the distance between the clamp body 1 and the cutter body 2 is large, and the hard object such as the bone is extremely difficult to compress, so that whether the clamped object is a soft tissue can be judged by detecting the displacement condition of the clamp body 1 and the cutter body 2 and the distance between the clamp body 1 and the cutter body 2, and if the large hard object is clamped, an operator can be reminded to check the condition of the clamped tissue.

Furthermore, the clamp body 1 and the knife body 2 can be arranged in parallel or approximately in parallel, and the clamp body 1 and the knife body 2 are close to or far away from each other by applying power, so that the purpose of clamping tissues is achieved. Meanwhile, the clamp body 1 and the cutter body 2 can be arranged at an angle, and the clamp body 1 and the cutter body 2 are close to or far away from each other through rotation of the clamp body 1 and/or the cutter body 2, so that the purpose of clamping tissues is achieved. In this embodiment, the body and the knife body 2 may be disposed at an angle, so as to clamp tissue by rotation.

The clamp body 1 comprises a first clamping section 11 and a first connecting section, and the cutter body 2 comprises a second clamping section 21 and a second connecting section;

the cutter part also comprises a pipe body, the first connecting section and the second connecting section are connected with the pipe body, and the first connecting section and/or the second connecting section are/is hinged with the pipe body;

the cutting knife still includes driving piece 4, driving piece 4 can drive first grip segment 11 and second grip segment 21 and move in opposite directions, in order to organize the centre gripping between first grip segment 11 and second grip segment 21, the detection portion is used for acquireing the distance between first grip segment 11 and the second grip segment 21, through setting up driving piece 4, can make first grip segment 11 and second grip segment 21 move in opposite directions, and then realize the centre gripping to the tissue, the detection portion can acquire the distance between first grip segment 11 and the second grip segment 21, and then guarantee the accurate thickness that detects out the tissue of centre gripping.

Further, the cutting knife comprises a driving part, the driving part 4 is a part of the driving part, and the driving part is arranged in the handle.

Further, the driving part also comprises a trigger and a connecting rod, and the driving part 4 can be a push rod. Wherein, the trigger is hinged on the handle, the driving piece 4 is hinged with one end of the connecting rod, and the other end of the connecting rod is hinged with the trigger. An operator holds the trigger and the handle grip and applies a gripping force, when the trigger approaches the handle grip, the trigger rotates around a hinge point with the handle grip, so that the connecting rod pushes the driving member 4 backwards (in a first direction), and the driving member 4 drives the first clamping section 11 and the second clamping section 21 to move oppositely through the tube body. When the trigger moves to the side far away from the grip, the connecting rod and the driving piece 4 move forwards (in the reverse direction of the first direction), and the pipe body drives the first clamping section 11 and the second clamping section 21 to move away from each other.

The body includes interior sleeve pipe 31 and outer tube 32, interior sleeve pipe 31 is established in outer tube 32 along the axial cover of outer tube 32, first linkage segment is articulated mutually with interior sleeve pipe 31 and outer tube 32 respectively, second linkage segment and interior sleeve pipe 31 fixed connection, driving piece 4 can drive interior sleeve pipe 31 and follow the axial slip of outer tube 32 in outer tube 32, in order to drive first clamping section 11 and be close to or keep away from second clamping section 21, through setting up interior sleeve pipe 31 and outer tube 32 that cup joints, and make first linkage segment articulate mutually with interior sleeve pipe 31 and outer tube 32 respectively, second linkage segment and interior sleeve pipe 31 fixed connection, can make interior sleeve pipe 31 when the axial slip in outer tube 32, first clamping section 11 of stable drive is close to or keeps away from second clamping section 21.

Further, inner tube 31 and outer tube 32 are both straight tubes.

Further, the inner sleeve 31 is disposed coaxially with the outer sleeve 32.

Further, the inner sleeve 31 is connected to the driving member 4 to axially slide the inner sleeve 31 in the outer sleeve 32 by the trigger.

The driving part 4 can drive the inner sleeve 31 to move along the first direction so as to enable the first clamping section 11 to be close to the second clamping section 21; the detection part comprises a processing module and a first detection piece 51, the processing module is electrically connected with the first detection piece 51, the first detection piece 51 is used for obtaining a pressure value generated by the first detection piece 51 when the inner sleeve 31 moves along the first direction, or the first detection piece 51 is used for obtaining a displacement amount of the inner sleeve 31 along the first direction, the processing module obtains a distance between the cutter body 2 and the clamp body 1 based on the pressure value or the displacement amount, the thickness of a clamped tissue can be obtained, further, the problem that the cutting speed is slowed down due to too many tissues are clamped, the problems that the cutter head burns through, the damage of the cutter head and the host alarm are caused can be avoided, the normal operation is ensured, and the risk of the operation is reduced.

Further, the first direction is the rear of the handle, i.e. the side facing away from the tissue. When the driving member 4 drives the inner sleeve 31 to move along the first direction, the first clamping section 11 approaches the second clamping section 21. When the driving member 4 drives the inner sleeve 31 to move in the reverse direction of the first direction, the first clamping section 11 is far away from the second clamping section 21.

As an embodiment, the first detecting element 51 may be a distance sensor, and the distance sensor detects the moving distance of the inner sleeve 31 and obtains the displacement distance and the displacement angle of the first clamping section 11 approaching the second clamping section 21 through the calculation of the processing module. Because the maximum opening angle and the maximum opening distance between the first clamping section 11 and the second clamping section 21 are preset, the real-time distance between the first clamping section 11 and the second clamping section 21 can be obtained through calculation of the preset maximum opening angle and displacement angle and the preset maximum opening distance and displacement distance.

As another embodiment, in this embodiment, the first detecting element 51 is a pressure sensor, a pressure value generated on the first detecting element 51 when the inner sleeve 31 moves along the first direction is obtained by the pressure sensor, and then the real-time distance between the cutter body 2 and the clamp body 1 is calculated by the processing module.

Further, the processing module may be disposed on the host.

The outer wall of the inner sleeve 31 is sleeved with a sliding sheet 6 and a first elastic piece 91, the inner sleeve 31 is further provided with a blocking sheet 7, the blocking sheet 7 is located on the first direction side of the sliding sheet 6 to limit the first elastic piece 91 between the sliding sheet 6 and the blocking sheet 7, the driving piece 4 is connected with the sliding sheet 6, the driving piece 4 can drive the sliding sheet 6 to slide on the inner sleeve 31 along the first direction to apply elastic force to the blocking sheet 7 through the first elastic piece 91 and drive the inner sleeve 31 to move along the first direction through the blocking sheet 7, the first detection piece 51 is arranged on the blocking sheet 7, the first detection piece 51 is connected with the first elastic piece 91 to obtain the pressure value of the first elastic piece 91 to the first detection piece 51, the real-time distance between the cutter body 2 and the clamp body 1 can be obtained through obtaining the pressure value of the first elastic piece 91 to the first detection piece 51 and through calculation of the processing module,

the detection part further comprises a second detection piece 52, the second detection piece 52 is electrically connected with the processing module, the second detection piece 52 is located on the first direction side of the driving piece 4, a second elastic piece 92 is arranged between the driving piece 4 and the second detection piece 52, one end of the second elastic piece 92 is connected with the driving piece 4, the other end of the elastic piece is connected with the second detection piece 52, when the driving piece 4 drives the inner sleeve 31 to move along the first direction, the driving piece 4 compresses the second elastic piece 92 on the second detection piece 52, and the second detection piece 52 is fixedly arranged in the handle through a connecting plate, so that the second detection piece 52 obtains the pressure value of the second elastic piece 92 on the second detection piece 52.

The stiffness coefficient of the first elastic member 91 is larger than that of the second elastic member 92.

Further, the first elastic member 91 and the second elastic member 92 are both springs, and the first detecting member 51 and the second detecting member 52 are both pressure sensors, in this embodiment, the first detecting member 51 is a film pressure sensor, and the second detecting member 52 is a film pressure sensor.

Furthermore, be provided with two sliding pins on driving piece 4, be provided with the spout on the shell of handle, the spout extends along first direction, and the sliding pin slides and sets up in the spout, can make driving piece 4's moving direction restrict, can guarantee driving piece 4 along first direction or the reverse movement of first direction.

During operation, the trigger is linked with the connecting rod and the driving piece 4, and then the inner sleeve 31 is pushed to move, so that the opening and closing of the trigger are realized, and the clamp body 1 and the cutter body 2 are driven to open and close. When the trigger is closed by external force, the trigger can rotate around the hinged point of the trigger and the handle, and the rotation of the trigger can drive the connecting rod and the driving piece 4 to move towards the first direction. When the trigger is closed, the second elastic element 92 is compressed by the pressure of the driving element 4, so that the trigger can be reset and bounced off when the external force is removed. The second elastic member 92 is always in a stressed compressed state. The driving member 4 is substantially L-shaped, and one end of the driving member 4 is connected to the first elastic member 91, and the other end is sleeved on the sliding piece 6.

The inner sleeve 31 is provided with a connecting cap, the cylindrical part of the connecting cap is connected with the inner sleeve 31 through a clamping groove, and the radial extension part of the connecting cap is the baffle 7. Still the cover is equipped with locating part 8 on interior sleeve pipe 31, and locating part 8 passes through screw thread and is connected cap fixed connection, and locating part 8 also includes cylinder portion and radial epitaxial part, and the cylinder portion cover is established on interior sleeve pipe 31's outer wall, and radial epitaxial part is used for spacing slider 6 on the reverse of first direction. The slide 6 is disposed between a radially outwardly extending portion of the connecting cap and a radially outwardly extending portion of the retaining member 8, and the second resilient member 92 is disposed between the slide 6 and the radially outwardly extending portion of the connecting cap. When the trigger is opened, the pressure spring and the sliding piece 6 are limited between the limiting piece 8 and the blocking piece 7, and the pressure spring is always in a stressed and compressed state.

When the driving member 4 moves along the first direction, the first elastic member 91 is compressed, and the sliding piece 6 is driven to move along the first direction, so as to compress the second elastic member 92.

Since the stiffness coefficient of the first elastic member 91 is greater than that of the second elastic member 92, when no object is clamped between the holder 1 and the knife body 2, or the holder 1 and the knife body 2 are not closed to the bottom, the deformation amount of the first elastic member 91 (compression spring) is small, and when the holder 1 and the knife body 2 are clamped, the second elastic member 92 has a large compression amount. The first elastic member 91 drives the connection cap to move along the first direction, and the movement of the connection cap directly drives the inner sleeve 31 to move along the first direction. Therefore, when the knife body 2 and the clip body 1 are not clipped, the elastic force of the second elastic member 92 is gradually increased before the knife body and the clip body are closed. The thickness of the tissue when unclamped can be measured therefrom. No matter whether the tissue is clamped or not, no matter how thick the clamped tissue is, the trigger can completely move to the bottom each time the trigger is pulled, the driving piece 4 can also have the maximum displacement, the second elastic piece 92 can also be compressed, and the maximum compression of the second elastic piece 92 depends on the distance between the clamp body 1 and the cutter body 2 during clamping.

When the cutter body 2 and the clamp body 1 clamp tissue, the displacement of the inner sleeve 31 is different from that of the driving part 4, and the second elastic part 92 is arranged between the inner sleeve 31 and the driving part 4 to provide stable clamping force, namely the second elastic part 92 provides clamping force for clamping the tissue.

The force value obtained by the second detecting element 52 can be converted by the processing module to obtain the displacement of the inner sleeve 31, so that monitoring of the tissue thickness can be realized by monitoring the force value of the second elastic element 92.

When the thickness of the tissue without clamping needs to be monitored, the force value can be read through the second detection piece 52, so that the angle and the distance between the clamp body 1 and the knife body 2 can be calculated, and the thickness of the tissue without clamping can be obtained. When the thickness of the tissue during clamping needs to be detected, the force value can be read through the first detection piece 51, and then the angle and the distance between the clamp body 1 and the knife body 2 are calculated, so that the thickness of the tissue during clamping is obtained.

The detecting part further comprises a third detecting part 53, the third detecting part 53 is arranged on the clamp body 1, and the third detecting part 53 is used for acquiring the distance between the cutter body 2 and the clamp body 1.

Further, the second detecting member 52 is an eddy current sensor, and the cutter body 2 is made of a metal material.

According to the principle of electromagnetic induction, when the metal plate and the magnetic field move relatively, an induced current is generated in the metal plate, and the current is self-looped in the metal plate, so that the induced current is called an eddy current. Its size is related to the parameters of resistivity, magnetic permeability, thickness of metal plate, angular frequency of coil exciting current and distance between coil and metal plate. If only one of the parameters is changed, the parameter can be determined according to the size of the vortex. Since eddy currents are not convenient to measure, it is practical to determine a parameter based on the influence of the magnetic field generated by the eddy currents on the impedance of the coil. The high-frequency electromagnetic field generated by the oscillating coil acts on the surface of the metal plate, eddy current is generated in a metal surface thin layer due to skin effect, the eddy current generates an alternating electromagnetic field, and the alternating electromagnetic field reacts on the coil to generate induction potential in the coil, so that the equivalent impedance Z of the coil is changed, and the amplitude value of the oscillating voltage is also changed. The amplitude of the coil voltage is easy to detect, and a certain parameter can be determined according to the amplitude of the voltage.

According to the principle, the eddy current sensor is arranged on the clamp body 1, the cutter body 2 is made of metal materials, the alternating electromagnetic field is emitted through the transmitting coil, the eddy current is generated in the cutter body 2, the magnetic field generated by the eddy current influences the impedance of the transmitting coil, and the induction distance can be calculated by measuring the voltage change formed by the impedance change, namely the thickness of the tissue can be known.

The clamp body 1 is provided with the pad body 12, the pad body 12 is positioned on one side of the clamp body 1 close to the cutter body 2, the third detection piece 53 is arranged between the clamp body 1 and the pad body 12, and the pad body 12 can be arranged to better clamp tissues, so that the blood coagulation strengthening effect is improved.

Further, when the clamp body 1 is provided with the pad body 12, the thickness of the pad body 12 subtracted from the sensing distance is equal to the tissue thickness.

The cutting knife provided by the embodiment of the utility model can obtain the thickness of the clamped tissue, avoids the problems of slow cutting speed, pad body 12 burn-through damage, host alarm and the like caused by clamping excessive tissue, ensures normal operation and reduces the risk of the operation. By monitoring the tissue thickness in real time, more cutting information can be provided to the operator. If the tissue clamped is too much, a host can be set to alarm to remind an operator to reduce the tissue clamping amount. If a larger hard object is clamped, the operator can be reminded to check the condition of the clamped tissue. When the cutting is about to be finished, the energy output of the main machine can be dynamically adjusted according to the closing condition of the cutter body 2 and the clamp body 1.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims (10)

1. The cutting knife is characterized by comprising a cutting knife part, wherein the cutting knife part comprises a clamp body (1) and a knife body (2), the clamp body (1) and the knife body (2) can move in opposite directions to clamp tissues between the clamp body (1) and the knife body (2), and the cutting knife further comprises a detection part, and the detection part is connected with the cutting knife part to obtain the distance between the knife body (2) and the clamp body (1).

2. The cutting burr as claimed in claim 1, characterized in that the clamp body (1) comprises a first clamping section (11) and a first connecting section, and the cutter body (2) comprises a second clamping section (21) and a second connecting section;

the cutter part also comprises a pipe body, the first connecting section and the second connecting section are connected with the pipe body, and the first connecting section and/or the second connecting section are/is hinged with the pipe body;

the cutting knife further comprises a driving piece (4), the driving piece (4) can drive the first clamping section (11) and the second clamping section (21) to move oppositely, so that tissues are clamped between the first clamping section (11) and the second clamping section (21), and the detection portion is used for acquiring the distance between the first clamping section (11) and the second clamping section (21).

3. The cutting knife according to claim 2, wherein the tube body comprises an inner sleeve (31) and an outer sleeve (32), the inner sleeve (31) is sleeved in the outer sleeve (32) along an axial direction of the outer sleeve (32), the first connecting section is respectively hinged with the inner sleeve (31) and the outer sleeve (32), the second connecting section is fixedly connected with the inner sleeve (31), and the driving member (4) can drive the inner sleeve (31) to slide in the outer sleeve (32) along the axial direction of the outer sleeve (32) so as to drive the first clamping section (11) to approach or leave the second clamping section (21).

4. The cutting burr according to claim 3, characterized in that the drive member (4) is capable of moving the inner sleeve (31) in a first direction for bringing the first clamping section (11) closer to the second clamping section (21);

the detection part comprises a processing module and a first detection piece (51), the processing module is electrically connected with the first detection piece (51), the first detection piece (51) is used for acquiring a pressure value generated by the inner sleeve (31) when moving along the first direction to the first detection piece (51), or the first detection piece (51) is used for acquiring a displacement of the inner sleeve (31) along the first direction, and the processing module obtains a distance between the cutter body (2) and the clamp body (1) based on the pressure value or the displacement.

5. The cutting knife according to claim 4, characterized in that a sliding piece (6) and a first elastic piece (91) are sleeved on the outer wall of the inner sleeve (31), a blocking piece (7) is further arranged on the inner sleeve (31), the blocking piece (7) is positioned on the first direction side of the sliding piece (6) to limit the first elastic piece (91) between the sliding piece (6) and the blocking piece (7), the driving piece (4) is connected with the sliding piece (6), the driving piece (4) can drive the sliding piece (6) to slide on the inner sleeve (31) along the first direction to apply an elastic force to the blocking piece (7) through the first elastic piece (91) and drive the inner sleeve (31) to move along the first direction through the blocking piece (7), and the first detecting piece (51) is arranged on the blocking piece (7), the first detection piece (51) is connected with the first elastic piece (91) so as to acquire the pressure value of the first elastic piece (91) to the first detection piece (51).

6. The cutting burr of claim 5, wherein the detection portion further comprises a second detection member (52), the second detection piece (52) is electrically connected with the processing module, the second detection piece (52) is positioned on the first direction side of the driving piece (4), a second elastic piece (92) is arranged between the driving piece (4) and the second detecting piece (52), one end of the second elastic piece (92) is connected with the driving piece (4), the other end of the elastic piece is connected with the second detection piece (52), when the driving piece (4) drives the inner sleeve (31) to move along the first direction, the driving member (4) compresses the second elastic member (92) against the second detecting member (52), so that the second detection member (52) acquires the pressure value of the second elastic member (92) to the second detection member (52).

7. The cutting burr of claim 6, characterized in that a stiffness coefficient of the first resilient member (91) is larger than a stiffness coefficient of the second resilient member (92).

8. The cutting burr according to claim 1, characterized in that the detection portion further comprises a third detection member (53), the third detection member (53) being arranged on the collet (1), the third detection member (53) being adapted to obtain a distance between the cutter body (2) and the collet (1).

9. The cutting burr of claim 8, characterized in that a pad (12) is arranged on the collet (1), the pad (12) being located on a side of the collet (1) that is close to the blade body (2), and the third detecting member (53) being arranged between the collet (1) and the pad (12).

10. The cutting burr of any of claims 1-9, wherein the cutting burr is an ultrasonic cutting hemostatic knife;

when the detection part further comprises a first detection piece (51), the first detection piece (51) is a film pressure sensor;

when the detection part further comprises a second detection piece (52), the second detection piece (52) is a film pressure sensor;

when the detection part further comprises a third detection piece (53), the second detection piece (52) is an eddy current sensor, and the cutter body (2) is made of a metal material.

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