CN220512887U - Tissue excision device and excision system - Google Patents
Tissue excision device and excision system Download PDFInfo
- Publication number
- CN220512887U CN220512887U CN202321366322.9U CN202321366322U CN220512887U CN 220512887 U CN220512887 U CN 220512887U CN 202321366322 U CN202321366322 U CN 202321366322U CN 220512887 U CN220512887 U CN 220512887U
- Authority
- CN
- China
- Prior art keywords
- assembly
- tissue
- cutting
- reversing
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 303
- 230000005540 biological transmission Effects 0.000 claims abstract description 80
- 238000002679 ablation Methods 0.000 claims abstract description 47
- 230000009471 action Effects 0.000 claims abstract description 15
- 230000008859 change Effects 0.000 claims abstract description 6
- 230000033001 locomotion Effects 0.000 claims description 76
- 238000007789 sealing Methods 0.000 claims description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 230000007246 mechanism Effects 0.000 claims description 33
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 7
- 238000013461 design Methods 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 15
- 210000001519 tissue Anatomy 0.000 description 180
- 239000007788 liquid Substances 0.000 description 29
- 230000009467 reduction Effects 0.000 description 16
- 230000000694 effects Effects 0.000 description 13
- 230000003068 static effect Effects 0.000 description 10
- 230000000712 assembly Effects 0.000 description 9
- 238000000429 assembly Methods 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 7
- 239000002699 waste material Substances 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 201000004458 Myoma Diseases 0.000 description 2
- 208000037062 Polyps Diseases 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002572 peristaltic effect Effects 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 206010046798 Uterine leiomyoma Diseases 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009802 hysterectomy Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 206010046811 uterine polyp Diseases 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model discloses a tissue excision device, comprising: a tissue ablation device handle, an assembly for providing power and control signals; the cutter head component is in replaceable and quick connection with the handle of the tissue cutting device and controls the action component through the handle of the tissue cutting device; the tool bit assembly comprises a cutting unit and an operating unit; wherein, be provided with quick change connection structure between tool bit subassembly and the tissue excision device handle. A tissue ablation system is also disclosed. This tissue excision device can use different tool bit subassembly to the focus of difference, simultaneously, to the tool bit subassembly of different forms, can realize realizing quick connection with the tissue excision device handle, change swiftly convenient, connect effectually moreover, the transmission is stable. The stability design of the cutting unit is realized, the shaking performance of the cutting unit in the operation process is small, and the stability performance is good. The split type design can realize the lightweight design of each component, and is light in weight, convenient to use, difficult to produce tired etc.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a tissue excision device and an excision system.
Background
Typically, tissue resectors are used with endoscopes, e.g., hysteroscopes, and laparoscopes. The tissue resectors require an instrument channel through the endoscope, with the aid of an endoscope lens to complete the tissue cut. When the hysteroscope is used, the hysteroscope is required to be inflated by using the uterine curettage liquid, two independent liquid channels are arranged in the hysteroscope tube of the hysteroscope for the uterine curettage liquid to flow in and flow out, but the hysteroscope has only an observation function and does not have an operation function, if operations such as hysteromyoma, uterine polyp, hysteromy adhesion and the like are required to be excised, the operations such as operations need to be performed by means of the instrument operation channel in the hysteroscope tube, and a therapeutic instrument (such as a tissue resectoscope) passes through the instrument operation channel to enter the hysteroscope for therapeutic operations. The diameter of a currently used hysteroscope tube is overlarge, a cervical is required to be expanded for operation after anesthesia, in order to reduce the diameter of the hysteroscope tube, one liquid channel of the hysteroscope is usually combined with an instrument channel, namely one liquid channel is the instrument channel, when no instrument enters the instrument channel, the instrument channel flows in or flows out of the liquid channel as the liquid channel, when the instrument enters the instrument channel, the diameter of the instrument channel needs to be smaller than that of the instrument channel so that the liquid can pass through, or the instrument entering the instrument channel is provided with a hollow tube so that the liquid can enter or be discharged from the hollow tube of the instrument.
Moreover, existing tissue resecting devices are either non-reusable or of an entirely disposable design, which is costly.
The focus tissue in the uterine cavity has larger difference, is divided into soft tissues, polyps, myomas and the like, has different toughness, adopts a cutting tool at present, is relatively single, cannot be used in a targeted mode aiming at different focuses, improves the cutting efficiency, shortens the operation time for an operation, can effectively reduce the workload of doctors and simultaneously reduces the operation damage of patients. However, the existing excision knife has no pertinence, so that the existing excision operation time of the uterine cavity focus is long, and the operation damage is large.
Meanwhile, in the high-speed moving intracavity operation process, the possible tissue stirring into the clamp layer of the knife clamp influences the rotation of the knife head, so that great inconvenience is brought to the operation, namely, the operation time is increased, and the operation risk is increased.
In the surgical excision process, different focuses need to be excised, and the existing hysterectomy cutters can prevent the whole operation of pipelines and cables in the use process, so that great inconvenience is brought to the operation of doctors. Moreover, the existing excision tool has heavy weight, and the overweight excision tool can bring fatigue for long-time operation.
The existing tissue excision system on the market has two modes of manual operation and electric operation, the manual operation has extremely low efficiency, the clinical treatment requirement is difficult to adapt, and the electric operation is heavy and expensive. In addition, if the electrotomy is adopted, the tissue is extremely easy to be damaged by heat.
The existing tissue excision system on the market is mainly of an integrated structure, and the whole handle and the whole cutter head are used as consumable materials, so that the cost is high; when facing different working conditions of rotary cutting and slicing, different equipment is needed, operators are required to be trained respectively during use, and the process is complicated.
Therefore, a tissue cutting device which can be suitable for various focuses in cavities is urgently needed to be designed, split type design between a cutter head and a handle can be realized, the cutter head can be quickly connected in a butt joint mode, cutting and cutting movement can be realized aiming at different focuses, more accurate cutting is realized, meanwhile, position adjustment of a cutting window can be realized by rotating focuses at different positions, and the problem that the rotation of the cutter head is influenced by the clamping layer of a tissue stirring-in cutter tube in the operation process is corrected. Meanwhile, the tissue cutting system is designed, so that the cost can be reduced, the cutter head assembly is disposable, and the handle is repeatedly used for a plurality of times, so that the problems of high price, high weight, easiness in fatigue and the like during use are solved.
Disclosure of Invention
The utility model aims to solve the technical problems, and provides a tissue cutting device which is provided with a cutter head component and a handle in a split type, can realize quick replaceable connection, realizes disposable design of the cutter head component and repeated use design of the handle, is designed for different focuses, can realize accurate cutting of various focuses, has light weight and is convenient to use, and another utility model aims to provide a tissue cutting system.
The utility model realizes the technical proposal adopted by the first utility model purpose: a tissue resecting device comprising:
a tissue ablation device handle, an assembly for providing power and control signals;
the cutter head component is in replaceable and quick connection with the handle of the tissue cutting device and controls the action component through the handle of the tissue cutting device; the tool bit assembly comprises a cutting unit and an operating unit;
wherein, be provided with quick change connection structure between tool bit subassembly and the tissue excision device handle.
This tissue cutting device through the split type setting to tissue cutting device handle and tool bit subassembly, has realized the disposable design of tool bit subassembly and the repeatedly usable design of tissue cutting device handle, provides power and control signal to the tool bit subassembly through the tissue cutting device handle, can realize the accurate control to the tool bit subassembly of different motion state can be compatible to the tissue cutting device handle, in order to realize the excision to different focus. In order to meet the requirements of quick replacement and quick connection of different cutter head assemblies and a tissue cutting device handle, quick replacement connection structures are arranged on the cutter head assemblies and the tissue cutting device handle, and quick replacement connection of different cutter head assemblies can be achieved through the quick replacement connection structures. The tool bit assembly can adopt various structures with different motion states so as to aim at the use of different focuses, and can realize various different motions such as rotary motion, axial reciprocating motion and the like through the control of the handle of the tissue cutting device, thereby effectively realizing the accurate cutting operation of the focuses. The tissue cutting device is convenient to use and simple to operate.
Preferably, the quick-change connection structure on the tool bit assembly is configured as an operating housing quick-change connection structure. In order to realize the quick replacement connection with the tissue cutting device handle, the cutter head assembly is provided with an operation shell quick connection structure, so that the cutter head assemblies in different cutting modes can be connected with the tissue cutting device handle in an adaptive manner, the quick connection between the cutter head assemblies and the tissue cutting device handle can be ensured, and different operations such as focus cutting can be performed.
Preferably, the operation housing quick connection structure is provided with a locking groove for realizing mating locking. The quick connecting structure of the operating shell is provided with a circle of locking groove for accommodating the steel balls in the locking mechanism, and the steel balls are clamped in the locking groove to prevent the cutter head assembly from falling out and realize locking.
Preferably, the cutter head assembly is a disposable cutter head assembly. The disposable tool bit subassembly is adopted to the tool bit subassembly, only needs to change the tool bit subassembly to different focus and can realize different excision operations, can effectively reduce cost, has solved the excision of single tool bit subassembly to multiple different focus among the prior art simultaneously, has the excision effect accurate scheduling problem inadequately.
Preferably, the cutting unit comprises an outer cutter tube and an inner cutter tube, and the unilateral fit clearance between the outer cutter tube and the inner cutter tube is 0.03mm (without the outer cutter tube) to 0.2mm. The unilateral fit clearance between the inner cutter tube and the outer cutter tube is set within the range of 0.03mm (without the inner cutter tube) to 0.2mm, so that the jitter in the use process can be controlled within the optimal range, and meanwhile, the relative movement between the inner cutter tube and the outer cutter tube can be ensured to be smooth, thereby realizing stable operation and precise excision of focus.
Preferably, the outer cutter tube is provided with an outer cutter tube cutting edge region, the outer cutter tube cutting edge region is provided with a diameter reduction region, and a unilateral fit clearance between the outer cutter tube and the inner cutter tube where the diameter reduction region is located is 0.01-0.03 mm (inclusive). The diameter reduction zone is arranged to further reduce the shake of the cutter head assembly and improve the stability of operation. Meanwhile, the design diameter reduction area can effectively prevent tissues from entering a gap between the inner cutter tube and the outer cutter tube while ensuring the relative movement of the inner cutter tube and the outer cutter tube, so that the problems that the inner cutter tube and the outer cutter tube are blocked due to the entering of a disease focus tissue, the actual operation is affected and the like are solved, the problem that the excision is incomplete is solved, because the suction is used for cutting in the normal operation process, when the tissue blocking occurs, the normal cutting action can be completed, and a dead zone is formed on the part which does not actually produce the excision effect on the tissues, so that the problem that the excision cannot be accurately performed is solved. The fit clearance is large in other areas except the diameter reduction area, no blocking is caused during relative movement, and the operation is more flexible and convenient.
Preferably, the end of the cutting unit is provided with a blunt blind end structure. The design of the blunt blind end structure is convenient for the tool bit to be inserted into the instrument channel of the endoscope, and unnecessary damage is avoided.
Preferably, the cutting unit is further provided with a ruler for identifying the direction of the cutting window and measuring the size of the tissue. Through setting up the scale, the direction of cutting window can be fixed a position fast to can confirm the scope that the focus is located according to the testing result, realize accurate excision.
Preferably, the tissue resecting device handle comprises:
a power component for providing power;
the transmission assembly is connected with the power component and is used for transmitting power; the transmission assembly is provided with a cutter head assembly quick connection structure;
the locking mechanism is matched with the transmission assembly and used for unlocking or locking the cutter head assembly.
As one embodiment of the tissue cutting device handle, the tissue cutting device handle mainly includes a power unit for supplying power, and a motor is generally preferred as the power unit, but the present invention is not limited to the motor, and other power sources capable of supplying power may be used. And the transmission assembly is used for transmitting the power of the power source to the cutter head assembly in a rotating mode. In order to realize the quick replacement type connection of the cutter head assembly and the transmission assembly, a quick connection structure of the cutter head assembly is arranged on the transmission assembly. The tool bit assembly to be replaced is only required to be taken down when the tool bit assembly is replaced, the new tool bit assembly to be replaced can be quickly inserted, clamped or screwed into the quick connecting structure, the operation is convenient and quick, the time is short, and the tool bit assembly is easy to use. The locking mechanism is arranged to facilitate unlocking or locking of the cutter head assembly in the use process, and specifically, when the cutter head assembly is required to be replaced, the cutter head assembly and the transmission assembly can be smoothly connected through operating the locking mechanism, and when the replaced cutter head assembly is required to be locked, the locking mechanism is released to lock the cutter head assembly, so that the stability of connection is ensured.
Preferably, the locking mechanism is connected with the power component through a motor base. In order to realize the effective connection between the locking mechanism and the power component, the linkage operation is set, the locking mechanism and the power component are connected into a whole through a motor base, and the cutter head component can be unlocked or locked rapidly through the locking mechanism.
Preferably, the locking mechanism comprises a sliding ring for realizing pressing unlocking or locking of an operating part, a frame arranged in the sliding ring, a large spring sleeved on the frame and steel balls embedded on the frame and matched with the sliding ring to realize locking or unlocking of the tool bit assembly. The locking mechanism can be realized by a slip ring, a frame, a large spring and steel balls. Specifically, when the unlocking is needed, the sliding ring is pushed to one side of the power component, at the moment, the spring is compressed, the steel balls are in a free state, the tool bit assembly can be inserted into the transmission assembly in a forward extending mode to be connected with the transmission assembly, after the connection is completed, the sliding ring is loosened, the sliding ring moves to one side of the tool bit assembly under the action of the elastic force of the spring, and the steel balls are extruded between the sliding ring and the tool bit assembly to form locking. The structure adopts the clamping locking realized by the extrusion friction force.
Preferably, the slip ring is an annular shell, and a plurality of cavities are arranged in the slip ring; the slip ring is provided with a step cavity towards one side of the tool bit assembly. The sliding ring is arranged, namely, in order to realize the installation and combination of all the components, and simultaneously, in order to facilitate the unlocking or locking of the tool bit assembly through the operation of the sliding ring, a plurality of cavities are arranged in the sliding ring and are matched with the power components to realize sliding. Specifically, the step cavities are arranged to facilitate the steel balls in the locking mechanism to act between the step cavities in the locking and unlocking processes, so that unlocking and locking operations are realized.
Preferably, the frame is provided with a plurality of through grooves, and the steel balls are arranged inside the through grooves and protrude outside the through grooves. Fei Tong groove and the ladder cavity inside the inner wall of the slip ring are matched, and the steel balls realize the limit of unlocking or locking under the action of the through groove and the ladder structure.
Preferably, a mandrel mounting cavity and a bearing seat are arranged in the frame. Because the transmission assembly is required to be arranged, the mandrel mounting cavity and the bearing seat are arranged in the frame, and the rotating parts such as the bearing seat and the transmission bearing are matched with each other to realize the rotating connection of the mandrel and the frame, so that the power can be better transmitted to the cutter head assembly.
Preferably, the transmission assembly comprises a mandrel, and the mandrel is rotationally connected with the locking mechanism. The transmission assembly is mainly realized by a mandrel, and the scheme is only a preferable scheme, and is not limited to the scheme, so long as the effective transmission of power can be realized, and the purpose of the transmission assembly can be realized. Through the operation of the locking mechanism, the control operation of rotation and stop of the mandrel can be realized, and then unlocking or locking of the cutter head assembly is realized.
Preferably, a jacking component is further arranged inside the mandrel; the jacking assembly comprises a small jacking spring and a jacking rod. The propping assembly can be realized by a small propping spring and a push rod, and other propping assemblies can be selected. The inner cutter tube is tightly propped against the outer cutter tube by the propping assembly, the propping small spring and the ejector rod are used for enabling the inner cutter tube to be always in close contact with the top end of the outer cutter tube, namely the blunt blind end, and the blunt blind end of the outer cutter tube is propped against, so that the effects of preventing tissue from being blocked and reducing cutting blind areas are achieved.
Preferably, the tool bit assembly quick connect structure is disposed on the spindle. In order to more directly transmit power, the quick connecting structure of the tool bit assembly can be arranged on the mandrel, for example, the quick connecting structure can be a claw and other structures arranged on the mandrel, and of course, the quick connecting structure can also be arranged on other parts according to actual needs, so that the quick connecting structure is suitable for effectively transmitting power.
Preferably, the tool bit assembly is a rotary cutting tool bit, and the operation unit is a rotary structure. The tool bit assembly can adopt a rotary cutting tool bit, and the structure is suitable for completing focus excision operation of cutting while rotating. In order to achieve this, the operating unit is provided in a rotary configuration.
Preferably, the operation unit includes a knob, an operation housing rotatably connected to the knob, and a rotation assembly provided inside the operation housing. Specifically, the operation unit can be realized through knob, operation casing and rotating assembly, through the rotation of the outer sword pipe in the knob control cutting unit to adjust the cutting window of outer sword pipe, realize the excision to different focus. The inner cutter tube is driven by the rotating component to perform differential-free rotating motion, and the focal tissue excision effect is achieved between the inner cutter tube and the outer cutter tube at the cutting edge area.
Preferably, the rotating assembly comprises a cutting unit rotating shaft connected with the transmission assembly, and the cutting unit rotating shaft is connected with the cutting unit and drives the cutting unit to rotate. The rotating component can be a rotating shaft of the cutting unit and is used for driving the cutting unit to rotate.
Preferably, the operation shell is internally provided with a negative pressure cavity, the operation shell is provided with a water pipe connector communicated with the negative pressure cavity, and the negative pressure cavity is communicated with the cutting unit through the rotating assembly. Meanwhile, the inner cutter tube is communicated with the rotating shaft of the cutting unit, a passage is arranged in the rotating shaft of the cutting unit, and the passage is respectively communicated with the negative pressure cavity and the inner cutter tube cavity. Because the focus tissue that will cut down is taken out, consequently, be provided with the negative pressure chamber in the operation casing inside, during the use, negative pressure chamber passes through water pipe intercommunication negative pressure device, and in the cutting process, focus tissue receives the suction of cutting window and draws close to the tool bit, along with the rotation of inner knife pipe, the focus tissue gets into the part of inner knife lumen body and is cut down to along with the inside liquid flow of inner knife pipe gets into appointed region, thereby realize the discharge of focus tissue.
Preferably, the negative pressure sealing structure is formed between the operation housing and the cutting unit and between the operation housing and the rotating assembly through sealing members respectively. In order to realize the discharge of focus tissues, a good negative pressure environment is formed, so that a relatively sealed negative pressure sealing structure is formed between the whole operation shell and the cutting unit, and more effective operation is realized.
Preferably, the cutter head assembly is a rotary slicing cutter head, and the operation unit is of an axial reciprocating rotary structure. As another preferred solution, the cutter head assembly may adopt a rotary slicing cutter head, and the operation unit is correspondingly arranged in an axial reciprocating rotary structure.
Preferably, the operation unit comprises a knob, an operation housing rotatably connected with the knob, and a rotation assembly with a reversing assembly arranged inside the operation housing. The specific operation unit is mainly realized by a knob, an operation shell and a rotating assembly with a reversing assembly, and the outer cutter tube in the cutting unit is controlled to rotate through the knob so as to adjust the cutting window of the outer cutter tube, thereby realizing the cutting of focuses of different parts. The rotary assembly can perform rotary motion, wherein the reversing assembly generates axial reciprocating rotary motion under the action of the reversing function, so that the rotary assembly can drive the inner cutter tube to perform axial reciprocating rotary motion together, and the effect of planing and cutting focal tissues with the outer cutter tube is realized in the cutting edge area.
Preferably, the operation shell is internally provided with a negative pressure cavity, a water pipe connector communicated with the negative pressure cavity is arranged on the operation shell, and the negative pressure cavity is communicated with the cutting unit through the rotating assembly. The inner cutter tube is communicated with the rotating assembly, a passage is arranged in the rotating assembly, and the passage is respectively communicated with the negative pressure cavity and the inner cutter tube cavity. When the device is used, the negative pressure cavity is communicated with the negative pressure device through the water pipe, in the cutting process, focus tissues are attracted by the suction force of the cutting window and are close to the cutter head, along with the axial reciprocating rotary motion of the inner cutter pipe, the part of the focus tissues entering the inner cutter pipe cavity is cut, and along with the flow of liquid inside the inner cutter pipe, the focus tissues enter a designated area, so that the focus tissues are discharged.
Preferably, the negative pressure sealing structure is formed between the operation housing and the rotating assembly and between the operation housing and the cutting unit through sealing members respectively. In order to realize the discharge of focus tissues, a good negative pressure environment is formed, so that a relatively sealed negative pressure sealing structure is formed between the whole operation shell and the cutting unit, and more effective operation is realized.
Preferably, the rotating assembly comprises a cutting unit rotating shaft and a reversing assembly, wherein the cutting unit rotating shaft and the reversing assembly are used for being connected with the transmission assembly, and the cutting unit rotating shaft is connected with the reversing assembly and drives the reversing assembly to rotate. As a preferred solution, the rotating assembly is provided with only one cutting unit rotating shaft, and the power transmission is realized through the connection of the cutting unit rotating shaft and the transmission assembly.
Preferably, the reversing assembly comprises an operation unit circulating screw rod with a reversing groove and an operation unit reversing block, one end of the operation unit circulating screw rod is connected with the cutting unit, the other end of the operation unit screw rod is connected with the rotating shaft of the cutting unit, the operation unit circulating screw rod is provided with the circulating reversing groove, and the operation unit reversing block is matched with the circulating reversing groove to realize reversing. The reversing assembly is mainly realized by an operation unit circulating screw rod and an operation unit reversing block, the operation unit reversing block is matched with the circulating reversing groove, and the operation unit circulating screw rod generates axial reciprocating rotary motion under the action of the operation unit reversing block and the cutting unit rotating shaft, so that the inner cutter tube in the cutting unit is driven to perform axial reciprocating rotary motion together.
Preferably, the tool bit assembly is an axially reciprocating tool bit, and the operation unit is an axially reciprocating structure. As a preferred solution, the cutter head assembly may also employ an axially reciprocating cutter head, with the corresponding operating unit being provided in an axially reciprocating configuration.
Preferably, the operation unit comprises a knob, an operation shell rotationally connected with the knob, and a reversing assembly arranged inside the operation shell. As a preferable scheme, the operation unit is mainly realized by a knob, an operation shell and a reciprocating reversing assembly, and the outer cutter tube in the cutting unit is controlled to rotate by the knob so as to adjust the cutting window of the outer cutter tube, so that the focus of different parts is cut off. When the surgical knife is used, the transmission assembly drives the reversing assembly to rotate, the reversing assembly generates axial reciprocating motion under the guidance of reversing action, the inner knife tube moves along with the reversing assembly, and the focal tissue excision effect with the outer knife tube is realized in the cutting edge area.
Preferably, a negative pressure cavity is arranged in the operation shell, a water pipe connector communicated with the negative pressure cavity is arranged on the operation shell, and the negative pressure cavity is communicated with the cutting unit through a reversing assembly. The inner cutter tube is communicated with the reversing assembly, a passage is arranged in the reversing assembly, and the passage is respectively communicated with the negative pressure cavity and the inner cutter tube cavity. When the device is used, the negative pressure cavity is communicated with the negative pressure device through the water pipe, in the cutting process, focus tissues are attracted by the suction force of the cutting window and are close to the cutter head, along with the axial reciprocating motion of the inner cutter pipe, the part of the focus tissues entering the cavity of the inner cutter pipe is cut, and along with the flow of liquid inside the inner cutter pipe, the focus tissues enter a designated area, so that the focus tissues are discharged.
Preferably, the negative pressure sealing structure is formed between the operation shell and the knob and between the operation shell and the reversing assembly through sealing elements respectively. In order to realize the discharge of focus tissues, a good negative pressure environment is formed, so that a relatively sealed negative pressure sealing structure is formed between the whole operation shell and the cutting unit, and more effective operation is realized.
Preferably, the reversing assembly comprises a reciprocating circulating screw rod with a reversing groove, a reciprocating sliding block and a reciprocating reversing block, one end of the reciprocating circulating screw rod is connected with the reciprocating sliding block, the other end of the reciprocating screw rod is provided with a motor meshing structure, and the reciprocating reversing block is matched with the reversing groove to realize reversing. As a preferable scheme, the reciprocating reversing assembly is mainly realized by a reciprocating circulating screw rod, a reciprocating sliding block and a reciprocating reversing block, the transmission assembly is meshed with the reciprocating circulating screw rod and drives the reciprocating circulating screw rod to rotate, the reciprocating reversing block and the reciprocating sliding block generate axial reciprocating motion under the guidance of the reciprocating circulating screw rod, the inner cutter tube moves along with the reciprocating sliding block, and the focal tissue cutting effect with the outer cutter tube is realized in the cutting edge area.
Preferably, the reciprocating sliding block is connected with the cutting unit and drives the cutting unit to axially reciprocate.
Preferably, the tissue resecting device handle comprises:
a power component for providing power;
the transmission assembly is connected with the power component and is used for converting unidirectional rotation motion of the power component into axial reciprocating rotation; wherein, the transmission subassembly in be provided with the switching-over subassembly, the switching-over subassembly on be provided with tool bit subassembly quick connect structure.
As another preferred option, the tissue resecting device handle may also be implemented by a power member and a transmission assembly with a reversing assembly. Specifically, the transmission assembly converts unidirectional rotation motion of the power component into axial reciprocating rotation through the reversing assembly, and stably transmits the axial reciprocating rotation motion to the cutter head assembly, so that effective operation of cutting focus tissues is realized. The handle of the tissue cutting device is simpler to operate and more convenient to use. Also, the tissue ablation device handle may be compatible with tool bit assemblies of different motion states. The quick replacement of the cutter head component and the handle of the tissue cutting device is realized through the quick connection structure of the cutter head component, and the setting of using different cutter head components for different focuses is realized.
Preferably, the reversing assembly comprises a circulating screw rod and a reversing block, wherein the circulating screw rod is provided with a reciprocating spiral groove, and the reversing block is matched with the reciprocating spiral groove to realize reversing. As a preferable scheme, the reversing assembly is mainly realized by a circulating screw rod and a reversing block, the power assembly drives the circulating screw rod to perform rotary motion, and meanwhile, the circulating screw rod generates axial reciprocating rotary motion under the guidance of the reversing block.
Preferably, the quick connecting structure of the tool bit assembly is a tool bit assembly sleeving hole arranged on the circulating screw rod. The circular screw rod is provided with a tool bit assembly nesting hole which is used for facilitating quick nesting connection with the tool bit assembly, so that the tool bit assembly is driven to axially reciprocate.
Preferably, the reversing block is provided with reversing protrusions matched with the reciprocating spiral grooves, and reversing matching arc grooves are concavely formed in the reversing protrusions. The reversing block is provided with a reversing bulge, and the reversing bulge is provided with a reversing matching arc groove for matching with the reciprocating spiral groove so as to realize reversing from unidirectional rotation to axial reciprocation.
Preferably, the transmission assembly further comprises a mandrel driven to rotate by the power assembly. The transmission assembly is mainly realized through a mandrel, and the power component is connected with the reversing assembly through the mandrel and transmits power.
Preferably, a motor shaft mounting hole is formed in one end of the mandrel, and a screw rod connecting hole is formed in the other end of the mandrel. The above-mentioned structure of dabber is mainly in order to facilitate the connection with power component and switching-over subassembly.
Preferably, the electric power device further comprises a handle shell, wherein the power assembly and the transmission assembly are arranged inside the handle shell, and the transmission assembly is rotatably arranged inside the handle shell through a transmission bearing. The tissue resecting device handle further comprises a handle housing arranged to facilitate the integrated arrangement of the power assembly and the transmission assembly.
Preferably, the tool bit assembly is a rotary cutting tool bit, and the operation unit is a rotary structure. As a preferable scheme, the cutter head component adopts a rotary cutter head, namely a rotary cutter can cut the cutter, and the corresponding operation unit is arranged into a rotary structure.
Preferably, the operation unit includes an operation housing and a rotation assembly provided inside the operation housing. As a preferred solution, the operating unit is mainly realized by an operating housing and a rotating assembly.
Preferably, the rotating assembly comprises a rotating shaft, a communicating groove is formed in the rotating shaft, and an inner cutter tube connecting cavity is formed in the rotating shaft. The rotating assembly is mainly realized by a rotating shaft, a communicating groove is arranged on the rotating shaft and used for communicating the negative pressure cavity and the cutting unit, and the inner cutter tube connecting cavity is arranged to facilitate the connection of the inner cutter tube and the rotating shaft and drive the rotary cutting operation through the rotating shaft. Specifically, the transmission assembly is sleeved with the rotating shaft, and the rotating shaft cannot axially reciprocate under the limit of the shell, so that the transmission assembly can only drive the rotating shaft to perform rotary motion. Some gaps are needed between the circulating screw rod and the rotating shaft of the tool bit assembly, and the gaps are reserved reciprocating movement distances, so that the circulating screw rod reciprocates, but the rotating shaft does not reciprocate.
Preferably, the operation housing includes a front housing and a rear housing, and a negative pressure sealing structure is formed between the front housing and the rear housing. In order to realize the setting of connection and negative pressure seal structure, the operation casing is provided with front casing and back casing, and the front casing is used for setting up rotating assembly, and back casing mainly used realizes the transitional coupling with drive assembly to realize the butt joint of drive assembly and rotation axis in back casing inside, in order to conveniently transmit power through the rotation axis.
Preferably, the front shell is provided with a water pipe connector, a negative pressure cavity is arranged in the front shell, and the water pipe connector is communicated with the negative pressure cavity. The negative pressure cavity is communicated with the negative pressure device through a water pipe, in the cutting process, focus tissues are sucked by the cutting window and are drawn close to the cutter head, along with the movement of the inner cutter pipe, the part of the focus tissues entering the cavity of the inner cutter pipe is cut, and along with the flow of liquid inside the inner cutter pipe, the focus tissues enter a designated area, so that the focus tissues are discharged.
Preferably, the rotary assembly is configured to form a dynamic seal with the operating housing via a seal. The transmission of power through the rotating component is needed, and meanwhile, the negative pressure environment of the negative pressure cavity is also needed to be protected, so that the dynamic sealing is realized.
Preferably, the cutter head assembly is a rotary slicing cutter head, and the operation unit is of an axial reciprocating rotary structure. As another preferable mode, the cutter head component can adopt a rotary planing cutter head, the corresponding operation unit adopts an axial reciprocating rotary structure, the axial reciprocating rotary motion of the cutter head component can be realized, and the axial motion type rotary cutting operation of focus tissues can be realized.
Preferably, the operation unit includes an operation housing, and a rotation assembly and a jack provided inside the operation housing. As a preferred solution, the operating unit is mainly realized by the operating housing and the rotating assembly and the tightening element. The biasing member may preferably bias the spring.
Preferably, the rotating assembly comprises a rotating shaft, and a sealing negative pressure section is arranged on the rotating shaft; an inner cutter tube connecting cavity is arranged in the rotating shaft. The rotating assembly mainly comprises a rotating shaft, the rotating shaft is sleeved with the transmission assembly, the rotating shaft is always attached to the transmission assembly under the action of the jacking piece, the power component output shaft moves in a reciprocating manner, the transmission assembly output shaft is driven to move in the reciprocating manner, the rotating assembly is connected with the rotating shaft, and the axial reciprocating type rotating motion is directly transmitted to an inner cutter tube connected with the rotating shaft.
Preferably, the sealing negative pressure section is provided with a communication port, and sealing structures are respectively arranged at two ends of the communication port in a protruding mode. Because the rotating shaft needs to realize axial reciprocating motion and rotating motion, a sealing structure is arranged on the rotating shaft for ensuring good sealing performance between the sealing negative pressure section and the negative pressure cavity and is used for a sealing environment with good shape.
Preferably, the sealing structure facing one end of the handle of the tissue cutting device comprises an arc groove arranged on the rotating shaft and a dynamic sealing ring arranged inside the arc groove; while the sealing structure towards one end of the cutting unit comprises a sliding sealing ring. The sealing structure is provided with different structures, so that the axial reciprocating motion of the rotating shaft can be ensured, and good rotating motion can be ensured.
Preferably, the operation housing includes a front housing and a rear housing, and a negative pressure sealing structure is formed between the front housing and the rear housing. In order to realize the setting of connection and negative pressure seal structure, the operation casing is provided with front casing and back casing, and the front casing is used for setting up rotating assembly, and back casing mainly used realizes the transitional coupling with drive assembly to realize the butt joint of drive assembly and rotation axis in back casing inside, in order to conveniently transmit power through the rotation axis.
Preferably, the front shell is provided with a water pipe connector, a negative pressure cavity is arranged in the front shell, and the water pipe connector is communicated with the negative pressure cavity. The negative pressure cavity is communicated with the negative pressure device through a water pipe, in the planing process, focus tissues are sucked by the cutting window and are close to the cutter head, along with the movement of the inner cutter pipe, the part of the focus tissues entering the cavity of the inner cutter pipe is cut, and along with the flow of liquid inside the inner cutter pipe, the focus tissues enter a designated area, so that the focus tissues are discharged.
Preferably, a spring seat is further arranged in the front shell, and the jacking piece is pressed between the spring seat and the rotating assembly and is used for realizing automatic jacking and attaching of the rotating assembly.
The technical scheme adopted by the utility model for achieving the second utility model purpose is as follows: a tissue ablation system comprising said tissue ablation device.
The tissue cutting system can realize that different cutter head components are adopted for different focus tissues, can better realize cutting and getting and cutting actions, and embody more accurate cutting; the son excision efficiency is effectively improved, the operation time is shortened, the workload of doctors can be effectively reduced, and meanwhile, the operation damage of patients is reduced; different focus tissues adopt the tool bit subassembly of different modes, can realize the slicing or rotary-cut, realized more accurate excision, the slicing speed is faster moreover, and is more efficient. Meanwhile, the problems that tissue is stirred into the clamp layer of the knife clamp to affect the rotation of the knife head and the like in the intracavity operation process of high-speed movement are avoided, the safety and reliability are improved, and the excision is more accurate. The split type setting of tool bit subassembly and tissue excision device handle can realize the lightweight design of part, reduces the whole weight of device, reduces the hand acid fatigue phenomenon that even platform produced for a long time because of the device is overweight. Adopting a shape of a host control handle and a disposable cutter head component; the tool bit subassembly adopts disposable, very big reduce the cost, reduced user's use threshold, reduced market promotion wide threshold with the acceptance level. Meanwhile, the tissue excision system has cooperativity, can cooperate with an endoscope (such as a hysteroscope and the like) and can also cooperate with a liquid management system, negative pressure starting can be controlled, negative pressure according to needs is realized, and the liquid usage amount is reduced.
Preferably, the device further comprises a host machine and a negative pressure device connected with the tissue cutting device. The suction of focus tissues is realized through a negative pressure device, so that the operation of sucking and cutting is realized.
Preferably, the tissue cutting device also comprises a control button or a foot switch, wherein the button is arranged on the handle of the reciprocating tissue cutting device or on the host machine.
Preferably, the negative pressure device is connected with the fluid management system, and the host is internally provided with a control system and is in signal connection with the fluid management system. Through the connection with the fluid management system, the negative pressure start can be controlled, the negative pressure according to the requirement is realized, and the liquid usage amount is reduced.
The beneficial effects of the utility model are as follows: this tissue cutting device through setting up tool bit subassembly and handle split type, has realized the disposable design of tool bit subassembly, and the design of handle repeatedly usable, can have different tool bit subassemblies to the focus design of difference moreover, different tool bit subassemblies can realize different excision actions, rotatory while cutting, axial reciprocating motion adds the rotation worker cutting, axial reciprocating type cutting etc. can realize the accurate excision to various focus through different tool bit subassemblies, simultaneously, to the tool bit subassembly of different forms, can realize realizing quick connection with tissue cutting device handle, change swiftly convenient, moreover the connection is effectual, the transmission is stable. Through the design to the tool bit subassembly, realized the stability design of cutting unit, the cutting unit trembles nature little in the operation, and stability can be good. The split type design can realize the lightweight design of each component, and is light in weight, convenient to use, difficult to produce tired etc.
Drawings
FIG. 1 is a schematic view showing a structure of a tissue cutting device according to embodiment 1 of the present utility model;
FIG. 2 is a schematic view of a structure of a handle of the tissue cutting device of example 1;
FIG. 3 is a cross-sectional view of the handle of the tissue ablation device of FIG. 2;
FIG. 4 is a schematic illustration of the tissue ablation device handle of FIG. 2 with the slip ring and handle housing removed;
FIG. 5 is an exploded view of the latch mechanism and the transmission assembly of embodiment 1;
FIG. 6 is a schematic view showing a structure of a slip ring from locking to unlocking in embodiment 1;
FIG. 7 is a schematic view of a structure of a cutter head assembly in embodiment 1;
FIG. 8 is a cross-sectional view of the cutter head assembly of example 1;
FIG. 9 is an exploded view of the tool bit assembly of embodiment 1;
fig. 10 is a schematic view showing an operation state of the cutting unit in embodiment 1;
FIG. 11 is a schematic view showing a structure of a tissue cutting device according to embodiment 2 of the present utility model;
FIG. 12 is a schematic view of a structure of a cutter head assembly in embodiment 2;
FIG. 13 is a cross-sectional view of the cutter head assembly of example 2;
fig. 14 is a sectional view of the operation unit in embodiment 2;
fig. 15 is an exploded view of the operation unit in embodiment 2;
FIG. 16 is a schematic view showing an operation state of the cutter unit in embodiment 2;
FIG. 17 is a schematic view showing a structure of a tissue cutting device in accordance with embodiment 3 of the present utility model;
FIG. 18 is a schematic view of a structure of a cutter head assembly in embodiment 3;
FIG. 19 is a cross-sectional view of the tool bit assembly of embodiment 3;
fig. 20 is a schematic view showing an exploded structure of the operation unit in embodiment 3;
FIG. 21 is a schematic view showing a structure of a tissue cutting device according to embodiment 4 of the present utility model;
FIG. 22 is a schematic view of a structure of a handle of the tissue cutting device of example 4;
FIG. 23 is a cross-sectional view of the handle of the tissue ablation device of example 4;
FIG. 24 is a schematic view showing an exploded structure of the handle of the tissue ablation device of example 4 after removal of the handle housing;
FIG. 25 is a schematic view of a structure of a cutter head assembly in embodiment 4;
FIG. 26 is a cross-sectional view of the tool tip assembly of embodiment 4;
fig. 27 is an exploded view of the operation unit in embodiment 4;
FIG. 28 is a schematic view showing a structure of a tissue cutting device according to embodiment 5 of the present utility model;
FIG. 29 is a schematic view showing a structure of a cutter head assembly in embodiment 5;
FIG. 30 is a cross-sectional view of the tool tip assembly of embodiment 5;
Fig. 31 is a schematic view showing an exploded structure of the operation unit in embodiment 5;
FIG. 32 is a schematic view of a cutting system according to the present utility model;
in the figure: 100. a tissue cutting device handle 200, a cutter head assembly 300, a host computer 400, a quick-change connecting structure 500, a power line 600, a water pipe 700 and focus tissues;
1. a handle shell, 101, a clamping groove, 2 and a power component,
3. the locking mechanism, 31, the slip ring, 32, the frame, 321, the through groove, 322, the mandrel mounting cavity, 323, the bearing pedestal, 33, the big spring, 34, the steel ball, 35, the sliding fit cavity, 36, the mounting cavity, 37, the sliding seat, 38, the connecting cavity, 4, the transmission component, 41, the transmission bearing, 42, the mandrel, 421, the ejector rod mounting cavity, 422, the motor shaft mounting hole, 423, the quick connection structure of the tool bit component, 43, the ejector rod, 44, the small ejection spring,
45. the circulating screw rod 451, the cutter head assembly butt joint hole 452 and the reciprocating spiral groove;
46. a reversing block 461, reversing protrusions 462 and reversing matching arc grooves;
5. 6, switching end, 7, button of the motor cabinet;
201. the cutting device comprises a cutting unit 201-1, an outer cutter tube, 201-2, an inner cutter tube, 201-3, a cutting edge area, 201-4, a blunt blind end structure, 201-5, a scale, 201-6, an inner cutter tube cavity, 201-7, a diameter reduction area, 201-8 and a cutting window;
202. The device comprises an operation unit, 202-1, a knob, 202-2, an operation shell, 202-3, an operation shell quick-connection structure, 202-4, a water pipe joint, 202-5, a negative pressure cavity, 202-6, a cutting unit rotating shaft, 202-7, a dynamic sealing ring, 202-8, a connecting cavity, 202-9, a sealing groove, 202-10, a small O-shaped ring, 202-11, a front shell, 202-12, a rear shell, 202-13, a clamping groove, 202-14, a rotating clamping groove, 202-15, a reversing block mounting hole, 202-16, a sliding cavity, 202-17, a shell large O-shaped ring, 202-18, a rotating shaft, 202-19, a containing cavity, 202-20, a cutter pipe mounting cavity, 202-21, a communicating groove, 202-22, a spring, 202-23, a spring seat, 202-24, a communicating port, 202-25, an arc groove, 202-26, a sliding sealing ring, 202-27, a buckle, 202-28 and a plug-in square shaft; 203. the reversing assembly 203-1, an inner cutter pipe connecting cavity, 203-2, an operation unit circulating screw rod, 203-3, an operation unit reversing block, 203-4, a large O-shaped ring, 203-5, a sealing cover, 203-6, a reciprocating circulating screw rod, 203-7, a reciprocating sliding block, 203-8, a reciprocating reversing block, 203-9, a dynamic O-shaped ring, 203-10, a motor meshing structure, 203-11, a cavity, 203-12, a reversing groove, 203-13 and a reversing block fixing hole;
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the utility model
Example 1:
in the embodiment shown in fig. 1, a tissue ablation device comprises:
a tissue ablation device handle 100, an assembly for providing power and control signals;
a cutter head assembly 200, which is connected to the tissue cutting device handle 100 and controls the operation of the tissue cutting device handle 100; the tool bit assembly 200 includes a cutting unit 201 and an operating unit 202;
wherein, a quick-change connection 400 is provided between the tool bit assembly 200 and the tissue ablation device handle 100.
The quick-change coupling on tool bit assembly 200 is configured to operate housing quick-connect 202-3. The operation housing quick connection structure 202-3 is provided with a locking groove 202-18; for cooperating with the steel balls in the locking mechanism to effect locking and unlocking of the tool bit assembly and the quick-change tissue resecting device handle 100 on the mechanical connection. The quick-change connecting structure on the handle of the quick-change tissue cutting device is a cutter head component quick-change connecting structure 423 arranged on the transmission component 4. The cutter head assembly quick connect structure 423 is configured to implement a quick drive connection with the cutting unit spindle 202-6 in the cutter head assembly.
As shown in fig. 2 and 3, the tissue resecting device handle comprises:
a power unit 2 for supplying power;
a transmission assembly 4 connected with the power component 2 and used for transmitting power; the transmission component 4 is provided with a cutter head component quick connecting structure 423;
the locking mechanism 3 cooperates with the transmission assembly 4 for unlocking or locking the mechanism of the cutter head assembly 200. In this embodiment, the latch mechanism 3 is disposed outside the transmission assembly 4.
In this embodiment, a tissue resecting device handle is used to connect and power the blade assembly 200 and control signals thereto.
The tissue cutting device handle 100 comprises a handle housing 1 and a power unit 2 arranged inside the handle housing 1 for providing power, which in this embodiment is a motor.
The tool bit assembly further comprises a locking mechanism 3 connected with the handle shell 1, and a transmission assembly 4 for stably transmitting power to the tool bit assembly is arranged inside the locking assembly 3.
The locking mechanism 3 is integrally connected with the handle housing 1 and can unlock/lock the cutter head assembly 200 by pressing the locking mechanism 3. The tissue ablation device handle 100 is compatible with tool bit assemblies 200 in different motion states.
The locking mechanism 3 is used for locking and unlocking the tool bit assembly 200, and the locking mechanism 3 comprises a slip ring 31, a frame 32, a large spring 33 and a steel ball 34.
As shown in fig. 4, the latch mechanism 3 is connected to the handle housing 1 through a motor mount 5.
As shown in fig. 5, a transmission assembly 4 is further disposed inside the locking mechanism 3, and the transmission assembly 4 is used for stably transmitting the rotation motion to the cutter head assembly 200. The transmission assembly 4 comprises a transmission bearing 41, a mandrel 42, a push rod 43 and a small pushing spring 44.
As shown in fig. 6, in the present embodiment, the slip ring 31 is an annular housing, and a slip ring cavity 35 is disposed inside the slip ring 31. The frame 32 is arranged in the slip ring cavity, and the large spring 33 is sleeved on the frame 32. The frame 32 is provided with a switching end 6 towards one end of the handle shell 1, and the motor base 5 is connected to the switching end 6.
The frame 32 is provided with a plurality of through grooves 321 on the outer diameter of one end far away from the handle shell 1, and the steel balls 34 are arranged inside the through grooves 321 and protrude outside the through grooves to contact with the inner wall of the sliding seat 37. The frame 32 is internally provided with a mandrel mounting cavity 322 and a bearing seat 323, and the mandrel 42 is mounted in the mandrel mounting cavity 322 and is in rotary connection through a bearing 41 arranged on the bearing seat 323.
The inside ejector pin installation cavity 421 that is provided with of dabber 42 is provided with motor shaft mounting hole 422 near the one end of handle shell 1, ejector pin 43 be the step shaft structure setting, ejector pin 43 install inside ejector pin installation cavity 421, tight little spring 44 cover in the top of ejector pin 43 establish and press and establish inside ejector pin installation cavity 421. The output shaft of the motor is connected with the motor shaft mounting hole 422. A bit assembly quick connect structure 423 is provided at an end of the spindle 42 facing the bit assembly. In this embodiment, the tool bit assembly quick connect structure 423 is a claw structure.
The specific unlocking and locking operations are as follows: when the unlocking is needed, the sliding ring 31 is pushed to one side of the power component 2, at the moment, the large spring 33 is compressed, the steel balls 34 are in a free state, the tool bit assembly 200 can be inserted into the transmission assembly 4 along the way to be connected, after the connection is completed, the sliding ring 31 is loosened, the sliding ring 31 moves to one side of the tool bit assembly 200 under the elastic force of the large spring 33, at the moment, the steel balls 34 are extruded between the sliding ring 31 and the tool bit assembly 200 to form locking, and the tool bit assembly 200 is guaranteed not to move, so that stable operation is realized. The large spring is used for enabling the steel ball to be switched between a locking position and an unlocking position, so that locking/unlocking is achieved.
The power component 2 is connected with the transmission component 4 and is fixed in the handle shell 1, and the locking mechanism is connected with the shell into a whole and can unlock/lock the cutter head by pressing the slip ring; the quick-change tissue ablation device handle 100 is compatible with tool bits of different motion states.
The tool bit assembly 200 may be manufactured in a single use design, i.e., from a consumable material. The tool bit assembly 200 may include a variety of forms, such as rotary cutting, planing, and rotary planing.
In this embodiment, as shown in fig. 7, the tool bit assembly 200 is a rotary-cut tool bit, and the operation unit is a rotary structure. The tool bit assembly adopts rotary cutting type and disposable structure. The cutter head assembly 200 includes a cutting unit 201 and an operating unit 202.
The cutting unit 201 comprises an outer cutter tube 201-1 and an inner cutter tube 201-2 sleeved in the outer cutter tube 201-1, wherein the outer cutter tube is provided with a cutting edge area 201-3, the cutting edge area 201-3 is provided with a blunt blind end structure 201-4, and the outer cutter tube 201-1 is also provided with a ruler 201-5 for identifying the direction of a cutting window 201-8 and measuring the tissue size.
An inner cutter tube cavity 201-6 is arranged inside the inner cutter tube 201-2.
As shown in fig. 8, a diameter reduction region 201-7 is arranged at the cutting edge region 201-3 of the outer cutter tube 201-1, so that the fit clearance between the inner cutter tube 201-2 and the outer cutter tube 201-1 is ensured, and the unilateral clearance of the diameter reduction region 201-7 is less than or equal to 0.03mm, so as to reduce the shake caused by the rotation of the inner cutter tube 201-2, improve the stability of the cutting unit 201, and preferably be 0.01mm; and the clearance between the outer cutter tube 201-1 and the inner cutter tube 201-2 in other areas is larger than 0.03mm, so that the relative movement of the outer cutter tube 201-1 and the inner cutter tube 201-2 is smooth, the blocking phenomenon is avoided, and the rotary cutting operation requirement is ensured.
The operation unit 202 comprises a knob 202-1 for controlling the rotation of an outer cutter tube and adjusting the direction of a cutting window 201-8 of the outer cutter tube 201-1, an operation shell 202-2 rotationally connected with the knob 202-1, an operation shell quick connection structure 202-3 arranged at one end of the operation shell 202-2 facing to the quick-change tissue cutting device handle 100, a dynamic seal structure 423 arranged at one end of the operation shell 202-6 and connected with the operation shell 202-2 through a dynamic seal ring 202-7, wherein in the connecting process, a sliding ring is pushed to enable the steel ball 34 to be matched with the operation shell quick connection structure 202-3 to realize locking and unlocking operation, a water pipe connector 202-4 communicated with the inside of the operation shell is arranged on the operation shell 202-2, a negative pressure cavity 202-5 communicated with the water pipe connector is arranged inside the operation shell 202-2, a cutting unit rotating shaft 202-6 is arranged inside the negative pressure cavity 202-5, one end of the cutting unit rotating shaft 202-6 extends into the operation shell quick connection structure 202-3 and is dynamically sealed with the operation shell 202-2 through a dynamic seal ring 202-7, and the other end of the cutting unit 202-6 is arranged inside the negative pressure cavity 202-6 and is communicated with the negative pressure cavity 202-8 in the cutter cavity 201-2, and the negative pressure cavity is communicated with the negative pressure cavity 202-2 and the cutting unit rotating cavity 201-2 is communicated with the negative pressure cavity 201-2.
The end of the operating housing 202-2 that interfaces with the knob 202-1 is provided with a seal groove 202-9, and a small O-ring 202-10 that provides a static seal is provided inside the seal groove 202-9.
The small O-shaped ring 202-10 is fixed between the wall of the outer cutter tube 201-1 and the operation shell to form static seal, the inner ring of the dynamic sealing ring is tightly contacted with the rotating shaft of the cutting unit to form dynamic seal, the outer ring of the dynamic sealing ring is contacted with the negative pressure cavity to form static seal, and the small O-shaped ring and the dynamic sealing ring seal the rotating shaft of the cutting unit and the negative pressure cavity to form a relative sealing environment together.
As shown in fig. 9, the operation housing 202-2 includes a front housing 202-11 and a rear housing 202-12 that are inserted and sealed together, the operation housing quick connection structure 202-3 is disposed on the rear housing 202-12, and one end of the rear housing 202-12 connected with the front housing 202-11 is disposed in a claw structure and is connected with the front housing in a clamping manner by a clamping hook at an end of the claw structure. The water pipe joint 202-4 is connected with the front housing 202-11, and the water pipe joint 202-4 is integrally arranged with the front housing 202-11 in this embodiment. The front shell 202-11 is provided with a clamping groove 202-13 corresponding to the clamping jaw structure of the rear shell, a rotary clamping groove 202-14 is arranged at the joint of the front shell and the knob, and the knob is matched with the rotary clamping groove 202-14 in a clamping way.
As shown in fig. 1 and 10, the specific movement mode of the rotary-cut disposable cutter head assembly is as follows: the power source motor in the handle shell 1 outputs rotary motion and is meshed with the cutting unit rotating shaft 202-6 through the transmission component 4, the cutting unit rotating shaft 202-6 is driven to perform differential-free rotary motion, and as the relative positions of the cutting unit rotating shaft 202-6 and the inner cutter tube 201-2 are fixed, the inner cutter tube 201-2 moves along with the cutting unit rotating shaft 202-6, and a cutting effect of focus tissues is generated between the cutting edge area 201-3 and the outer cutter tube 201-1; during the cutting process, the focal tissue is sucked by the cutting window 201-8 and drawn toward the cutter head, and along with the rotation of the inner cutter tube, the portion of the focal tissue entering the lumen of the inner cutter tube is cut and along with the flow of the liquid inside the inner cutter tube, flows into a designated area (tissue collection device or waste liquid collection device).
Example 2:
in the embodiment shown in fig. 11, a tissue cutting device is constructed in substantially the same manner as in embodiment 1, except for a cutter head assembly 200. The tool bit assembly 200 in this embodiment is a rotary planer tool bit, and the operation unit is an axially reciprocating rotary structure.
As shown in fig. 12 and 13, the cutter head assembly 200 includes a cutting unit 201 and an operating unit 202.
The cutting unit 201 comprises an outer cutter tube 201-1 and an inner cutter tube 201-2 sleeved in the outer cutter tube 201-1, wherein a cutting edge area 201-3 is arranged on the outer cutter tube, a blunt blind end structure 201-4 is arranged on the cutting edge area 201-3, and a scale 201-5 for identifying the direction of a window and measuring the size of tissue is also arranged on the outer cutter tube 201-1.
An inner cutter tube cavity 201-6 is arranged inside the inner cutter tube 201-2.
The cutting edge area 201-3 of the outer cutter tube is provided with the diameter reduction area 201-7, so that the fit clearance between the inner cutter tube 201-2 and the outer cutter tube 201-1 is ensured, the unilateral clearance of the diameter reduction area 201-7 is smaller than or equal to 0.03mm, so that the shake caused by the rotation and the reciprocating motion of the inner cutter tube 201-2 is reduced, the stability of the cutting unit 201 is improved, the clearance between the outer cutter tube 201-1 and the inner cutter tube 201-2 in other areas is larger than 0.03mm, the relative motion between the outer cutter tube 201-1 and the inner cutter tube 201-2 is smooth, the blocking phenomenon is avoided, the operation requirements of rotary cutting, reciprocating cutting and the like are ensured, the shake can be reduced, and the cutting unit is more stable.
As shown in fig. 14 and 15, the operation unit 202 includes a knob 202-1 for controlling rotation of the outer cutter tube and adjusting a cutting window direction of the outer cutter tube, and an operation housing 202-2 rotatably connected with the knob, wherein an operation housing quick connection structure 202-3 is disposed at one end of the operation housing 202-2 facing the handle, a water pipe connector 202-4 communicating with the interior of the operation housing is disposed at the operation housing 202-2, a negative pressure cavity 202-5 communicating with the water pipe connector is disposed at the interior of the operation housing, a cutting unit rotating shaft 202-6 is disposed at the interior of the negative pressure cavity 202-5, one end of the cutting unit rotating shaft 2026 extends into the operation housing quick connection structure 202-3 and is dynamically sealed with the operation housing by a dynamic seal ring 202-7, a connection cavity 202-8 is disposed at the other end of the cutting unit rotating shaft 202-6, a reversing assembly 203 is inserted and connected inside the connection cavity 202-8, an inner cutter tube connection cavity 203-1 communicating with the negative pressure cavity 202-5 is disposed inside the reversing assembly 203, and the inner cutter tube 201-2 is inserted into the inner cutter cavity 203 and drives the reversing assembly 203 to axially reciprocate.
The reversing assembly 203 comprises an operation unit circulation screw 203-2 with a reversing groove and an operation unit reversing block 203-3, the inner cutter pipe connecting cavity 203-1 is arranged inside the operation unit circulation screw 203-2, an inner cutter pipe 201-2 in the cutting unit is inserted into the inner cutter pipe connecting cavity 203-1 and is communicated with the negative pressure cavity 202-5, and the cutting unit rotating shaft 202-6 transmits torsion in the motor to the inner cutter pipe and drives the inner cutter pipe to rotate. Specific reversing operation: the operation unit reversing block 203-3 is fixed, and the unit circulation screw 203-2 moves, thereby realizing reversing operation.
The end of the operating housing 202-2 that interfaces with the knob 202-1 is provided with a seal groove 202-9, and a small O-ring 202-10 that provides a static seal is provided inside the seal groove 202-9.
The small O-shaped ring 202-10 is fixed between the outer wall of the outer cutter tube 201-1 and the operation shell 202-2 to form a static seal, the inner ring of the dynamic sealing ring 202-7 is tightly contacted with the cutting unit rotating shaft 202-6 to form a static seal, the outer ring of the dynamic sealing ring 202-7 is contacted with the negative pressure cavity 202-5 to form a dynamic seal, the small O-shaped ring 202-10 and the dynamic sealing ring 202-7 seal the cutting unit rotating shaft 202-6, the reversing assembly 203 and the negative pressure cavity 202-5 (a reversing block and an operation unit circulating screw rod in the reversing assembly and the cutting unit rotating shaft are arranged in the reversing assembly), and the large O-shaped ring 203-4 is fixed between the sealing cover 203-5 and the operation shell 202-2 to form a static seal together to form a relative sealing environment.
The water pipe joint 202-4 and the operation housing 202-2 are integrally arranged. The connection part of the operation shell 202-2 and the knob is provided with a rotary clamping groove 202-14, and the knob 201-1 is matched with the rotary clamping groove 202-14 in a rotary clamping way. The operation shell is provided with a reversing block mounting hole 202-15, the operation unit reversing block 203-3 is arranged in the reversing block mounting hole 202-15 and is in sealing connection with the reversing block mounting hole through a large O-shaped ring 203-4, and meanwhile, sealing of the reversing block mounting hole is achieved through a sealing cover 203-5.
As shown in fig. 11 and 16, the movement mode of the rotary slicing disposable knife head assembly is as follows: the motor in the handle shell 1 outputs rotary motion and is meshed with the cutting unit rotating shaft 202-6 through the transmission component 4, the cutting unit shaft 202-6 drives the operation unit circulation screw rod 203-2 to perform rotary motion together, the operation unit circulation screw rod 203-2 generates axial reciprocating rotary motion under the action of the operation unit reversing block 203-3, the inner cutter tube 201-2 moves along with the cutting unit rotating shaft 202-6, and a cutting effect of focus tissues is generated between the cutting edge region 201-3 and the outer cutter tube 201-1; during the cutting process, the focal tissue is sucked by the cutting window 201-8 and drawn toward the cutter head, and along with the axial reciprocating rotary motion of the inner cutter tube 201-2, the portion of the focal tissue entering the lumen of the inner cutter tube is cut off and along with the flow of the liquid inside the inner cutter tube 201-2, flows into a designated area (tissue collection device or waste liquid collection device).
Example 3:
in the embodiment shown in fig. 17, a tissue cutting device is constructed in substantially the same manner as in embodiment 1, except for a cutter head assembly 200. The tool bit assembly 200 is an axially reciprocating tool bit, and the operation unit is an axially reciprocating structure. The quick-change tissue ablation device handle 100 of this embodiment employs the solution of embodiment 1.
As shown in fig. 18 and 19, the axially reciprocating cutter head assembly 200 includes a cutting unit 201 and an operating unit 202.
The cutting unit 201 comprises an outer cutter tube 201-1 and an inner cutter tube 201-2 sleeved in the outer cutter tube 201-1, wherein a blunt blind end structure 201-4 is arranged in a cutting edge area 201-3 of the outer cutter tube, and a scale 201-5 for identifying the direction of a cutting window 201-8 and measuring the size of tissue is also arranged on the outer cutter tube 201-1.
An inner cutter tube cavity 201-6 is arranged inside the inner cutter tube 201-2.
The cutting edge area 201-3 of the outer cutter tube is provided with the diameter reduction area 201-7, so that the fit clearance between the inner cutter tube 201-2 and the outer cutter tube 201-1 is ensured, the unilateral clearance of the diameter reduction area 201-7 is smaller than or equal to 0.03mm, the shake caused by the rotation and the reciprocating motion of the inner cutter tube 201-2 is reduced, the stability of the cutting unit 201 is improved, the clearance between the outer cutter tube 201-1 and the inner cutter tube 201-2 in other areas is larger than 0.03mm, the relative movement between the outer cutter tube 201-1 and the inner cutter tube 201-2 is smooth, the blocking phenomenon is avoided, and the operation requirements of reciprocating cutting and the like are ensured.
As shown in fig. 20, the operation unit 202 includes a knob 202-1 for controlling the rotation of the outer cutter tube and switching the cutting window direction of the outer cutter tube, an operation housing 202-2 rotatably connected to the knob, an operation housing quick connection structure 202-3 provided at one end of the operation housing 202-2 facing the handle, a water pipe connector 202-4 provided at the operation housing 202-2 and communicating with the inside of the operation housing, a sliding cavity 202-16 provided at the inside of the operation housing 202-2 and a negative pressure cavity 202-5 communicating with the water pipe connector, the negative pressure cavity 202-5 provided at one end of the quick-change tissue cutting device handle 100, the sliding cavity 202-16 provided at one end of the cutting unit 201, and a reversing assembly 203 provided at the inside of the sliding cavity 202-16 and the negative pressure cavity 202-5 and realizing axial movement and reciprocating the reversing assembly.
The reversing assembly comprises a reciprocating circulating screw 203-6 with a reversing groove 203-12, a reciprocating sliding block 203-7 and a reciprocating reversing block 203-8, wherein the reciprocating sliding block 203-7 is arranged in a sliding cavity 202-16 in a sliding mode, one end of the reciprocating circulating screw 203-6 is arranged in the negative pressure cavity 203-5 and is in dynamic sealing connection with the negative pressure cavity 203-5 through a dynamic O-shaped ring 203-9, a motor meshing structure 203-10 is arranged on the reciprocating circulating screw 203-6 arranged at one end of the negative pressure cavity 203-5, the other end of the reciprocating circulating screw 203-6 extends to the sliding cavity to be connected with the reciprocating sliding block 203-7, a cavity 203-11 is arranged in the reciprocating circulating screw 203-6, the cavity 203-11 is respectively communicated with an inner cutter tube 201-2 and the negative pressure cavity 202-5, the reciprocating reversing block 203-8 is arranged in the sliding cavity 202-16 and is matched with the reversing groove 203-12 on the reciprocating circulating screw, the inner cutter 201-2 in the cutting unit is inserted into the reciprocating sliding block 203-7, the other end of the reciprocating circulating screw 203-6 extends to the sliding cavity to be connected with the reciprocating sliding block 203-7, and the reciprocating cutter 201-2 is driven by the reciprocating cutter to rotate by the reciprocating cutter 2. Specific reversing operation: the reciprocating circulation screw 203-6 is fixed, and the reciprocating reversing block 203-8 moves along with the reciprocating sliding block 203-7 to realize reversing.
One end of the operation housing 202-2, which is abutted with the knob 202-1, is provided with a sealing groove 202-9, a housing large O-ring 202-17 for providing static sealing is arranged in the sealing groove, and the housing large O-ring 202-17 is used for forming static sealing between the knob and the operation housing.
The inner ring of the dynamic O-shaped ring 203-9 is tightly contacted with the reciprocating circulation screw rod to form static seal, the outer ring of the dynamic O-shaped ring 203-9 is contacted with the negative pressure cavity to form dynamic seal, and the large O-shaped ring 202-17 of the shell and the dynamic O-shaped ring 203-9 together form a relative sealing environment.
The water pipe joint 202-4 and the operation housing 202-2 are integrally arranged. The operation shell 202-2 is provided with a rotary clamping groove 202-14 at the joint with the knob, and the knob is matched with the rotary clamping groove in a rotary clamping way.
The reciprocating sliding block 203-7 is provided with a reversing block fixing hole 203-13, and the reciprocating reversing block 203-7 is arranged in the reversing block fixing hole 203-13 and is matched with the reversing groove 203-12 on the reciprocating circulating screw rod to realize reciprocating reversing.
As shown in fig. 1, the motion of the axially reciprocating disposable cutter head assembly: the motor in the handle outputs rotary motion and is meshed with the reciprocating circulation screw rod 203-6 through the transmission component 4, the reciprocating circulation screw rod 203-6 performs rotary motion, the reciprocating reversing block 203-8 and the reciprocating sliding block 203-7 generate axial reciprocating motion under the guidance of the reciprocating circulation screw rod 203-6, the inner cutter tube 201-2 moves along with the reciprocating sliding block 203-7, and a cutting effect of focus tissues is generated in the cutting edge area 201-3 and the outer cutter tube 201-1; in the cutting process, focus tissues are sucked by a cutting window and are closed towards a cutter head, and along with the axial reciprocating motion of the inner cutter tube, the part of the focus tissues entering the cavity of the inner cutter tube is cut and flows into a designated area (a tissue collecting device or a waste liquid collecting device) along with the flow of liquid in the inner cutter tube.
Example 4:
in the embodiment shown in fig. 21, a tissue ablation device comprises:
a tissue ablation device handle 100, an assembly for providing power and control signals;
a cutter head assembly 200, which is connected to the tissue cutting device handle 100 and controls the operation of the tissue cutting device handle 100; the tool bit assembly 200 includes a cutting unit 201 and an operating unit 202;
wherein, a quick-change connection 400 is provided between the tool bit assembly 200 and the tissue ablation device handle 100.
The quick connect feature on tool bit assembly 200 is a quick connect feature. In this embodiment, the quick-fit structure is a square socket 202-28 disposed on the rotating shaft 202-18. The corresponding quick-change attachment structure provided on the tissue ablation device handle 100 is a blade assembly nesting hole 451. The drive connection is achieved through the square shaft and tool bit assembly nesting hole 451. The mechanical connection between the cutter head assembly and the handle of the tissue cutting device is realized by matching the buckles 202-27 arranged on the inner wall of the rear shell of the cutter head assembly with the clamping grooves 101 on the handle shell.
As shown in fig. 22 and 23, the handle 100 of the tissue cutting device includes a handle housing 1, a power unit 2 for supplying power provided inside the handle housing 1, and a transmission assembly 4 for transmitting power, and the power unit adopts a motor in this embodiment.
In this embodiment, the tissue resecting device handle 200 adopts a reversible rotary structure of the output shaft.
The motor is connected with the transmission component 4 and is fixed in the handle shell 1, the handle shell 1 can be unlocked/locked with the cutter head component 200, and the transmission component 4 can convert unidirectional rotation motion of the motor into axial reciprocating rotation; the tissue ablation device handle 100 is compatible with tool bit assemblies 200 in different motion states.
In this embodiment, a button 7 is provided on the handle housing 1.
As shown in fig. 24, the moving assembly 4 is used for smoothly transmitting the axial reciprocating rotary motion to the tool bit assembly 200, the driving assembly 4 comprises a driving bearing 41, a mandrel 42 and a reversing assembly, and the reversing assembly comprises a circulating screw 45 and a reversing block 46.
Specifically, a mandrel mounting seat 47 is arranged in the handle shell 1, the mandrel 42 is rotatably mounted on the mandrel mounting seat 47 through a transmission bearing 41, a motor shaft mounting hole 422 is formed in the connecting end of the mandrel 42 and a motor, and an output shaft of the motor is connected with the motor mounting hole 422 and drives the mandrel 42 to rotate in a reciprocating manner through the motor. The end of the mandrel 42 far away from the motor is provided with a screw rod connecting hole 424, and one end of the circulating screw rod 45 is inserted and connected inside the screw rod connecting hole 424 and reciprocally rotates along with the mandrel 42. The one end that mandrel 42 was kept away from to circulation lead screw 45 is provided with tool bit subassembly nest of tubes hole 451, the middle part of circulation lead screw 45 be provided with reciprocal helicla flute 452, be provided with mounting hole 11 on handle shell 1 that corresponds reciprocal helicla flute 452 place, switching-over piece 46 and reciprocal helicla flute 452 cooperation be provided with switching-over protruding 461, switching-over protruding 461 is concave to be equipped with switching-over cooperation arc groove 462, switching-over piece 46 set up inside mounting hole 11 and switching-over protruding 461 and reciprocal helicla flute 452 cooperation realize the switching-over.
The quick connecting structure of the tool bit assembly is a tool bit assembly sleeving hole 451 arranged on the circulating screw rod.
The tool bit assembly 200 includes a rotary cutting type tool bit assembly or a planer type tool bit assembly. The cutter head component is disposable. In this embodiment, the tool bit assembly is a rotary-cut tool bit, and the operation unit is a rotary structure.
As shown in fig. 25 and 26, the cutter head assembly 200 includes a cutting unit 201 and an operating unit 202.
The cutting unit 201 comprises an outer cutter tube 201-1 and an inner cutter tube 201-2 sleeved in the outer cutter tube 201-1, wherein a cutting edge area 201-3 is arranged on the outer cutter tube, a blunt blind end structure 201-4 is arranged on the cutting edge area 201-3, and a scale 201-5 for identifying the direction of a cutting window 201-8 and measuring the size of tissue is also arranged on the outer cutter tube 201-1.
An inner cutter tube cavity 201-6 is arranged inside the inner cutter tube 201-2.
The cutting edge area 201-3 of the outer cutter tube is provided with a diameter reduction area 201-7, and a unilateral fit clearance between the outer cutter tube and the inner cutter tube where the diameter reduction area is positioned is 0.01 mm-0.03 mm (without the clearance). The fit clearance between the inner cutter tube 201-2 and the outer cutter tube 201-1 is ensured, in this embodiment, the single-side clearance of the diameter-reduced region 201-7 is less than or equal to 0.03mm, so as to reduce the shake caused by the rotation of the inner cutter tube 201-2, and improve the stability of the cutting unit 201, preferably 0.01mm. In the embodiment, the gap between the outer cutter tube and the inner cutter tube is 0.03mm to 0.1mm, so that the relative movement of the outer cutter tube and the inner cutter tube is smooth, the blocking phenomenon is avoided, and the rotary cutting operation requirement is guaranteed.
As shown in fig. 27, the operation unit 202 includes an operation housing 202-1 and a rotation shaft 202-18 provided inside the operation housing 202-1, the operation housing 202-1 including a front housing 202-11 and a rear housing 202-12, and a sealed environment is formed between the front housing 202-11 and the rear housing 202-12. The rear shell 202-12 is internally provided with a containing cavity 202-19, the front shell 202-11 is internally provided with a negative pressure cavity 202-5, and the front shell 202-11 is integrally provided with a water pipe joint 202-4. The rotating shaft 202-18 is arranged inside the negative pressure cavity 202-5 and extends to the accommodating cavity 202-19 to be connected with the transmission assembly 4, and the rotating shaft 202-18 is in sealing connection with the negative pressure cavity 202-5 through a dynamic sealing ring 202-7. The front shell 202-11 is provided with a cutter tube mounting cavity 202-20 at one end facing the cutting unit 201, and the outer cutter tube 201-1 is in sealing connection with the cutter tube mounting cavity 202-20. An inner cutter tube connecting cavity 203-1 is arranged in the rotating shaft 202-18, and the inner cutter tube is inserted into the inner cutter tube connecting cavity 203-1 and is communicated with the negative pressure cavity 202-5. Specifically, a communication groove 202-21 is provided in the rotary shaft 202-18, and the communication groove penetrates the rotary shaft to communicate with the negative pressure chamber.
As shown in fig. 21, the rotary cutting bit assembly 200 has a motion pattern: the motor output shaft in the handle makes reciprocating rotary motion, and is sleeved with the rotary shaft 202-18 through the transmission assembly 4, meanwhile, the rotary shaft 202-18 cannot make axial motion under the limit of the front shell 202-11 and only makes rotary motion, the transmission assembly 4 on the handle axially reciprocates and slides on the rotary shaft 202-18, and the rotary motion is represented by the rotary shaft 202-18; the relative positions of the rotating shaft 202-18 and the inner cutter tube 201-2 are fixed, the inner cutter tube 201-2 moves along with the rotating shaft 202-18, and a focal tissue cutting effect is generated between the cutting edge area 201-3 and the outer cutter tube 201-1; during the cutting process, the focal tissue is sucked by the cutting window 201-8 and drawn toward the cutter head, and along with the rotation of the inner cutter tube 201-2, the portion of the focal tissue that enters the lumen of the inner cutter tube is cut off, and along with the flow of the liquid inside the inner cutter tube 201-2, flows into a designated area (tissue collection device or waste liquid collection device).
Example 5:
in the embodiment shown in fig. 28, a tissue cutting device is constructed in substantially the same manner as in embodiment 4, except for a cutter head assembly 200. The tool bit assembly is a slicing type planing tool bit, and the operation unit is of an axial reciprocating rotary structure.
As shown in fig. 29 and 30, the cutter head assembly 200 includes a cutting unit 201 and an operating unit 202.
The cutting unit 201 comprises an outer cutter tube 201-1 and an inner cutter tube 201-2 sleeved in the outer cutter tube 201-1, wherein a blunt blind end structure 201-4 is arranged in a cutting edge area 201-3 of the outer cutter tube, and a scale 201-5 for identifying the direction of a window and measuring the size of tissue is also arranged on the outer cutter tube 201-1.
An inner cutter tube cavity 201-6 is arranged inside the inner cutter tube 201-2.
The cutting edge area 201-3 of the outer cutter tube is provided with the diameter reduction area 201-7, so that the fit clearance between the inner cutter tube 201-2 and the outer cutter tube 201-1 is ensured, the unilateral clearance of the diameter reduction area 201-7 is smaller than or equal to 0.03mm, so that the shake caused by the rotation and the reciprocating motion of the inner cutter tube 201-2 is reduced, the stability of the cutting unit 201 is improved, the clearance between the outer cutter tube 201-1 and the inner cutter tube 201-2 in other areas is larger than 0.03mm, the relative motion between the outer cutter tube 201-1 and the inner cutter tube 201-2 is smooth, the blocking phenomenon is avoided, the operation requirements of rotary cutting, reciprocating cutting and the like are ensured, the shake can be reduced, and the cutting unit is more stable.
As shown in fig. 31, the operation unit 202 includes an operation housing 202-1, a rotation shaft 202-18 disposed inside the operation housing 202-1, and a tightening member pressed inside the operation housing 202-1 for tightly fitting the rotation shaft 202-18 with the circulation screw, wherein the tightening member in this embodiment employs a spring 202-22. The jacking piece is pressed between the spring seat and the rotating assembly and is used for realizing automatic jacking and attaching of the rotating assembly.
The operation housing 202-1 includes a front housing 202-11 and a rear housing 202-12, and a sealed environment is formed between the front housing 202-11 and the rear housing 202-12. The rear shell 202-12 is internally provided with a containing cavity 202-19, the front shell 202-11 is internally provided with a negative pressure cavity 202-5, and the front shell 202-11 is integrally provided with a water pipe joint 202-4. The rotating shaft 202-18 is arranged inside the negative pressure cavity and extends to the accommodating cavity 202-19 to be connected with the transmission assembly 4. The end of the negative pressure chamber 202-5 facing the cutting unit 201 is provided with a spring seat 202-23, and the spring 202-22 is arranged on the spring seat 202-23.
The rotary shaft 202-18 is provided with a communication port 202-24 at the water pipe joint section, sealing structures are respectively arranged at two ends of the communication port 202-24 in a protruding mode, the sealing structure facing one end of the rear shell is composed of an arc groove 202-25 and a dynamic sealing ring 202-7 arranged in the arc groove 202-25, the sealing structure facing one side of the cutting unit is composed of a sliding sealing ring 202-26, and a sealing negative pressure section is formed between the two sealing structures.
The front shell 202-11 is provided with a cutter tube mounting cavity 202-20 towards one end of the cutting unit, and the outer cutter tube 201-1 is in sealing connection with the cutter tube mounting cavity 202-20. An inner cutter tube connecting cavity 203-1 is arranged in the rotating shaft 202-18, and the inner cutter tube 201-1 is inserted into the inner cutter tube connecting cavity 203-1 and is communicated with the negative pressure cavity 202-5. The springs 202-22 are sleeved on the cutting unit 202 and the rotating shaft and form a pressing structure with the sliding sealing ring structure.
As shown in fig. 28, the planer type disposable cutter head assembly movement form: the motor output shaft in the handle makes reciprocating rotary motion, and is sleeved with the rotary shaft 202-18 through the transmission assembly 4, the rotary shaft 202-18 is always attached to the transmission assembly 4 under the action of the spring 202-22, and the axial reciprocating rotary motion of the handle is directly transmitted to the inner cutter tube 201-2, and the inner cutter tube 201-2 and the outer cutter tube 201-1 generate a cutting effect of focus tissues in the cutting edge area 201-3; in the cutting process, focus tissues are sucked by a cutting window and are closed towards a cutter head, and along with the axial reciprocating rotary motion of the inner cutter tube, the part of the focus tissues entering the cavity of the inner cutter tube is cut and flows into a designated area (a tissue collecting device or a waste liquid collecting device) along with the flow of liquid in the inner cutter tube.
Example 6:
in fig. 32, a cutting system includes a main body 300, a tissue cutting device handle 100, and a blade assembly 200 for performing a cutting function, the blade assembly 200 being removably and replaceably connected to the tissue cutting device handle 100 by a quick-change coupling 400.
Tissue resecting device handle 100 and blade assembly 200 may be constructed in any of embodiments 1-5.
The host machine 300 is connected with the tissue cutting device handle 100 through a power cord 500, a water pipe 600 is communicated with the sexual tool bit assembly 200, and the water pipe 600 is connected with a negative pressure device, wherein the negative pressure device comprises, but is not limited to, a peristaltic pump or a vacuum pump. In this embodiment, the negative pressure device is a peristaltic pump.
The tool bit assembly 200 operates with suction and cutting, and is more efficient than conventional electric or scissors cutting, and disposable to avoid cross-contamination.
The host 300 is mainly used for providing power for the excision system, and comprises an output port and a control board, and is used as a control unit for the operation of the handle 100 of the tissue excision device; and can carry out information exchange with the fluid management system, realize the linkage setting with the negative pressure device. The starting of the tissue cutting device can control the negative pressure starting, realize the negative pressure according to the requirement and reduce the liquid consumption.
The handle 100 of the tissue cutting device comprises a handle shell 1, a power component 2 is arranged in the handle shell 1, and a motor, a transmission component 4 and a locking mechanism 3 are adopted in the embodiment; the cutter head assembly 200 is powered by a motor inside the handle housing 1.
Also included is a button 7. The button 7 may be provided on the tissue ablation device handle 100, or on the host computer 300, or may be replaced with a foot switch, etc.
The tissue ablation system can be used alone or in combination. For example, the hysteroscope can be used in cooperation with a hysteroscope and the like, when the tissue excision system is used in cooperation with the hysteroscope and the like, the hysteroscope can provide an adaptive instrument channel and optimal visualization for the hysteroscope, can be operated by one hand when the hysteroscope is used in cooperation with the hysteroscope, and can simultaneously adjust the rotation of a lens of the hysteroscope and the direction of a cutting window of the hysteroscope tissue excision device. May also cooperate with a fluid management system: the starting of the uterine cavity tissue resectoscope can control the negative pressure starting, realize the negative pressure according to the requirement and reduce the liquid consumption.
The tissue cutting system realizes the cooperativity of products, the tissue cutting device handle is repeatedly used, the disposable cutter head component is used, the consumable part cost is low, and the use cost of a user is greatly reduced.
The excision system adopts the cutter head assembly 200 with different structures, such as slicing, rotary cutting and the like, can meet the excision requirement of different focus tissues, can realize more accurate excision of the focus tissues 700, has larger difference of focus tissues 700 in the uterine cavity, is divided into soft tissues, polyps, myomas and the like, has different toughness, has different cutter units 201, can better realize excision and cutting action aiming at different focus tissues, and embodies more accurate excision. The tool bit shake is little, and the cutting is accurate.
Table 1 shows a vibration amplitude test meter (rotary cutting type cutter head assembly)
For surgery, the efficiency of excision is improved, the surgery time is shortened, the workload of doctors can be reduced, and the surgical damage of patients can be reduced. The cutting system adopts different cutting modes, for example, when adopting a slicing mode and a rotary slicing mode, the cutting speed is as follows: 1.5g-4.5g/min, and the cutting speed is as follows when a rotary cutting mode is adopted: 5-30g/min, and has higher excision efficiency compared with the prior art.
In the high-speed moving intracavity operation process, the rotation of the cutter head is influenced by the tissue stirring-in cutter tube clamping layer, and in the excision system, the outer tube rotates to enable the outer tube and the inner tube to move relatively so as to correct the problems of the tissue stirring-in cutter tube interlayer and the like.
In the surgical excision process, the cutting window needs to be rotated and adjusted to meet excision requirements of different focuses, but the pipeline and the cable can prevent integral rotation operation, and a doctor can operate more conveniently by controlling the direction of the cutting window through the knob. The resecting system, the quick-change tissue resecting device handle 100 has a rotating function, and the cutting window direction is controlled by the knob at the front end, so that the problem of influence of a pipeline and a cable is avoided.
The product is overweight and can bring hand acid fatigue for long-time even platform, and operating parts in this excision system, whole light in weight, convenient operation is easy-to-use, can not produce tired.
While the utility model has been described with reference to the drawings, various changes and modifications may be made by one of ordinary skill in the art without creative efforts, and are within the scope of the present utility model.
Claims (58)
1. A tissue ablation device, comprising:
a tissue ablation device handle, an assembly for providing power and control signals;
the cutter head component is connected with the handle of the tissue cutting device and controls the action component through the handle of the tissue cutting device; the tool bit assembly comprises a cutting unit and an operating unit;
wherein, be provided with quick change connection structure between tool bit subassembly and the tissue excision device handle.
2. A tissue resecting device of claim 1 wherein: the quick-change connecting structure on the tool bit assembly is arranged to be an operation shell quick-connection structure, and the operation shell quick-connection structure is provided with a locking groove for realizing matched locking.
3. A tissue resecting device of claim 1 wherein: the tool bit assembly is a disposable planing tool bit assembly.
4. A tissue resecting device of claim 1 wherein: the cutting unit comprises an outer cutter tube and an inner cutter tube, wherein a unilateral fit clearance between the outer cutter tube and the inner cutter tube is more than 0.03mm and less than or equal to 0.2mm.
5. A tissue resecting device of claim 4 wherein: the outer cutter tube is provided with an outer cutter tube cutting edge area, a diameter shrinkage area is arranged at the outer cutter tube cutting edge area, and a unilateral fit clearance between the outer cutter tube and the inner cutter tube where the diameter shrinkage area is located is more than or equal to 0.01mm and less than or equal to 0.03mm.
6. A tissue resecting device of claim 4 wherein: the end part of the cutting unit is provided with a blunt blind end structure.
7. A tissue resecting device of claim 1 wherein: the cutting unit is also provided with a ruler for identifying the direction of the cutting window and measuring the size of the tissue.
8. A tissue resecting device of any one of claims 1-7, wherein: the tissue ablation device handle includes:
a power component for providing power;
the transmission assembly is connected with the power component and is used for transmitting power; the transmission assembly is provided with a cutter head assembly quick connection structure;
The locking mechanism is matched with the transmission assembly and used for unlocking or locking the cutter head assembly.
9. The tissue resecting device of claim 8 wherein: the locking mechanism is connected with the power component through a motor seat.
10. The tissue resecting device of claim 8 wherein: the locking mechanism comprises a sliding ring for realizing pressing unlocking or locking of an operating part, a frame arranged in the sliding ring, a large spring sleeved on the frame and steel balls embedded on the frame and matched with the sliding ring for realizing locking or unlocking of the tool bit assembly.
11. The tissue resecting device of claim 10 wherein: the slip ring is an annular shell, and a plurality of cavities are arranged in the slip ring; the slip ring is provided with a step cavity towards one side of the tool bit assembly.
12. The tissue resecting device of claim 10 wherein: the frame is provided with a plurality of through grooves, and the steel balls are arranged inside the through grooves and protrude out of the through grooves.
13. The tissue resecting device of claim 10 wherein: the frame is internally provided with a mandrel mounting cavity and a bearing seat.
14. The tissue resecting device of claim 8 wherein: the transmission assembly comprises a mandrel, and the mandrel is rotationally connected with the locking mechanism.
15. The tissue resecting device of claim 14 wherein: a jacking component is also arranged in the mandrel; the jacking assembly comprises a small jacking spring and a jacking rod.
16. The tissue resecting device of claim 14 wherein: the tool bit subassembly quick connect structure sets up on the dabber.
17. A tissue resecting device as in claim 8, wherein: the tool bit assembly is a rotary-cut tool bit, and the operation unit is of a rotary structure.
18. A tissue resecting device as in claim 17, wherein: the operation unit comprises a knob, an operation shell rotationally connected with the knob and a rotation assembly arranged in the operation shell.
19. A tissue resecting device as in claim 18, wherein: the rotary assembly comprises a cutting unit rotating shaft which is connected with the transmission assembly, and the cutting unit rotating shaft is connected with the cutting unit and drives the cutting unit to rotate.
20. A tissue resecting device as in claim 18, wherein: the operation casing inside be provided with the negative pressure chamber, the operation casing on be provided with the water pipe head in intercommunication negative pressure chamber, the negative pressure chamber pass through rotating assembly intercommunication cutting unit.
21. A tissue resecting device as in claim 18, wherein: and negative pressure sealing structures are respectively formed between the operation shell and the cutting unit and between the operation shell and the rotating assembly through sealing elements.
22. A tissue resecting device as in claim 8, wherein: the tool bit assembly is a rotary slicing tool bit, and the operation unit is of an axial reciprocating rotary structure.
23. A tissue resecting device as in claim 22, wherein: the operation unit comprises a knob, an operation shell rotationally connected with the knob and a rotating assembly with a reversing assembly, wherein the rotating assembly is arranged in the operation shell.
24. A tissue resecting device as in claim 23, wherein: the operation casing inside be provided with the negative pressure chamber, the water pipe head in intercommunication negative pressure chamber that sets up on the operation casing, the negative pressure chamber pass through rotating assembly intercommunication cutting unit.
25. A tissue resecting device as in claim 23, wherein: and negative pressure sealing structures are respectively formed between the operation shell and the rotating assembly and between the operation shell and the cutting unit through sealing elements.
26. A tissue resecting device as in claim 23, wherein: the rotary assembly comprises a cutting unit rotating shaft and a reversing assembly, wherein the cutting unit rotating shaft and the reversing assembly are used for being connected with the transmission assembly, and the cutting unit rotating shaft is connected with the reversing assembly and drives the reversing assembly to rotate.
27. A tissue resecting device as in claim 23, wherein: the reversing assembly comprises an operation unit circulating screw rod with a reversing groove and an operation unit reversing block, one end of the operation unit circulating screw rod is connected with the cutting unit, the other end of the operation unit screw rod is connected with the rotating shaft of the cutting unit, the operation unit circulating screw rod is provided with the circulating reversing groove, and the operation unit reversing block is matched with the circulating reversing groove to realize reversing.
28. A tissue resecting device as in claim 8, wherein: the tool bit assembly is an axial reciprocating tool bit, and the operation unit is of an axial reciprocating structure.
29. A tissue resecting device of claim 28 wherein: the operation unit comprises a knob, an operation shell rotationally connected with the knob and a reversing assembly arranged in the operation shell.
30. A tissue resecting device of claim 29 wherein: the operation casing inside be provided with the negative pressure chamber, the water pipe head in intercommunication negative pressure chamber that sets up on the operation casing, the negative pressure chamber pass through switching-over subassembly intercommunication cutting unit.
31. A tissue resecting device of claim 29 wherein: and negative pressure sealing structures are respectively formed between the operation shell and the knob and between the operation shell and the reversing assembly through sealing elements.
32. A tissue resecting device of claim 29 wherein: the reversing assembly comprises a reciprocating circulating screw rod with a reversing groove, a reciprocating sliding block and a reciprocating reversing block, one end of the reciprocating circulating screw rod is connected with the reciprocating sliding block, the other end of the reciprocating circulating screw rod is provided with a motor meshing structure, and the reciprocating reversing block is matched with the reversing groove to realize reversing.
33. A tissue ablation device in accordance with claim 32 wherein: the reciprocating sliding block is connected with the cutting unit and drives the cutting unit to axially reciprocate.
34. A tissue resecting device of any one of claims 1-7, wherein: the tissue ablation device handle includes:
a power component for providing power;
the transmission assembly is connected with the power component and is used for converting unidirectional rotation motion of the power component into axial reciprocating rotation; wherein, the transmission subassembly in be provided with the switching-over subassembly, the switching-over subassembly on be provided with tool bit subassembly quick connect structure.
35. The tissue resecting device of claim 34 wherein: the reversing assembly comprises a circulating screw rod and a reversing block, wherein a reciprocating spiral groove is formed in the circulating screw rod, and the reversing block is matched with the reciprocating spiral groove to realize reversing.
36. The tissue resecting device of claim 35 wherein: the quick connecting structure of the tool bit assembly is a tool bit assembly sleeving hole arranged on the circulating screw rod.
37. The tissue resecting device of claim 35 wherein: the reversing block is provided with reversing protrusions matched with the reciprocating spiral grooves, and reversing matching arc grooves are concavely formed in the reversing protrusions.
38. The tissue resecting device of claim 34 wherein: the transmission assembly also comprises a mandrel driven to rotate by the power assembly.
39. The tissue resecting device of claim 38 wherein: one end of the mandrel is provided with a motor shaft mounting hole, and the other end of the mandrel is provided with a screw rod connecting hole.
40. The tissue resecting device of claim 38 wherein: the novel handle comprises a handle shell, and is characterized in that the novel handle comprises a handle shell, wherein the power assembly and the transmission assembly are arranged inside the handle shell, and the transmission assembly is rotatably arranged inside the handle shell through a transmission bearing.
41. A tissue ablation device in accordance with claim 34, wherein: the tool bit assembly is a rotary-cut tool bit, and the operation unit is of a rotary structure.
42. A tissue ablation device in accordance with claim 41 wherein: the operation unit comprises an operation shell and a rotation assembly arranged inside the operation shell.
43. A tissue ablation device in accordance with claim 42 wherein: the rotary assembly comprises a rotary shaft, a communication groove is formed in the rotary shaft, and an inner cutter tube connecting cavity is formed in the rotary shaft.
44. A tissue ablation device in accordance with claim 42 wherein: the operation shell comprises a front shell and a rear shell, and a negative pressure sealing structure is formed between the front shell and the rear shell.
45. A tissue ablation device in accordance with claim 44 wherein: the front shell on be provided with the water pipe head, the inside negative pressure chamber that is provided with of front shell, water pipe head intercommunication negative pressure chamber.
46. A tissue ablation device in accordance with claim 42 wherein: the rotary assembly forms dynamic seal with the operation shell through a sealing piece.
47. A tissue ablation device in accordance with claim 34, wherein: the tool bit assembly is a rotary slicing tool bit, and the operation unit is of an axial reciprocating rotary structure.
48. A tissue ablation device in accordance with claim 47 wherein: the operation unit comprises an operation shell, and a rotating assembly and a jacking piece which are arranged in the operation shell.
49. A tissue ablation device in accordance with claim 48 wherein: the rotating assembly comprises a rotating shaft, and a sealing negative pressure section is arranged on the rotating shaft; an inner cutter tube connecting cavity is arranged in the rotating shaft.
50. A tissue ablation device in accordance with claim 49, wherein: the sealing negative pressure section is provided with a communication port, and sealing structures are respectively arranged at two ends of the communication port in a protruding mode.
51. A tissue ablation device in accordance with claim 50 wherein: the sealing structure facing one end of the handle of the tissue cutting device comprises an arc groove arranged on the rotating shaft and a dynamic sealing ring arranged in the arc groove; while the sealing structure towards one end of the cutting unit comprises a sliding sealing ring.
52. A tissue ablation device in accordance with claim 48 wherein: the operation shell comprises a front shell and a rear shell, and a negative pressure sealing structure is formed between the front shell and the rear shell.
53. A tissue ablation device in accordance with claim 52 wherein: the front shell on be provided with the water pipe head, the inside negative pressure chamber that is provided with of front shell, water pipe head intercommunication negative pressure chamber.
54. A tissue ablation device in accordance with claim 52 wherein: the front shell is internally provided with a spring seat, and the jacking piece is pressed between the spring seat and the rotating assembly and is used for realizing automatic jacking and attaching of the rotating assembly.
55. A tissue ablation system, characterized by: comprising a tissue ablation device as in any of claims 1-54.
56. The tissue ablation system of claim 55, wherein: the device also comprises a host machine and a negative pressure device connected with the tissue cutting device.
57. The tissue ablation system of claim 55, wherein: the tissue cutting device also comprises a control button or a foot switch, wherein the button is arranged on the handle of the reciprocating tissue cutting device or on the host machine.
58. The tissue ablation system of claim 56, wherein: the negative pressure device is connected with the fluid management system, and the host is internally provided with a control system and is in signal connection with the fluid management system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321366322.9U CN220512887U (en) | 2023-05-31 | 2023-05-31 | Tissue excision device and excision system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321366322.9U CN220512887U (en) | 2023-05-31 | 2023-05-31 | Tissue excision device and excision system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220512887U true CN220512887U (en) | 2024-02-23 |
Family
ID=89924520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321366322.9U Active CN220512887U (en) | 2023-05-31 | 2023-05-31 | Tissue excision device and excision system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220512887U (en) |
-
2023
- 2023-05-31 CN CN202321366322.9U patent/CN220512887U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6958071B2 (en) | Surgical tool system | |
| US5490860A (en) | Portable power cutting tool | |
| US5123904A (en) | Surgical resecting instrument | |
| US20060004397A1 (en) | Vitreous body cutter and vitreous body surgical equipment having the same | |
| US11974768B2 (en) | Rotary oscillating and reciprocating surgical tool | |
| CN113576626A (en) | Knife pipe assembly, planer and planing system | |
| CN220512887U (en) | Tissue excision device and excision system | |
| CN114404138A (en) | Glass cutting head for cutting vitreous body of ophthalmology department | |
| CN111839674B (en) | Hysteroscope tissue resection device | |
| KR100589118B1 (en) | Medical handpiece with suction connector and saline supply connector coaxially | |
| CN210408533U (en) | Flexible direction-changing medical grinding cutter | |
| CN216455230U (en) | Knife pipe assembly, planer and planing system | |
| CN221129985U (en) | Tissue cutting device handle, tissue cutting device and tissue cutting system | |
| US20220096110A1 (en) | Surgical rotary cutting tool including articulable head | |
| CN117179856A (en) | Tissue cutting device tool bit structure, tissue cutting device and cutting system | |
| CN210644868U (en) | Ultrasonic knife with smoke recovery function | |
| CN117159098A (en) | Tissue excision system | |
| CN221331363U (en) | Handle, tissue excision device and system | |
| KR200335364Y1 (en) | Surgical Handpiece equipped with couplings for suction and saline solution | |
| CN219699988U (en) | Front-back butt joint type biopsy device | |
| CN115737070B (en) | Planing device | |
| CN217245134U (en) | Glass cutting head for cutting vitreous body of ophthalmology department | |
| CN210697757U (en) | Detachable ultrasonic knife head | |
| CN117159100A (en) | Tool bit assembly, tissue cutting device and system | |
| CN217366007U (en) | Manual reuse planing device and planing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |